New `snap_context` module for `addons/module`
This module basically uses OpenGL to draw, in an offscreen, the vertices, edges and tris of specific objects and use colors as information for snap
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# ##### BEGIN GPL LICENSE BLOCK #####
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 3
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# ##### END GPL LICENSE BLOCK #####
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import bgl
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import gpu
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from mathutils import Vector, Matrix
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from mathutils.geometry import intersect_point_line, intersect_ray_tri
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from .bgl_ext import VoidBufValue, get_clip_planes
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from .mesh_drawing import GPU_Indices_Mesh, gpu_Indices_enable_state, gpu_Indices_restore_state
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from .utils_projection import (
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region_2d_to_orig_and_view_vector as _get_ray,
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intersect_boundbox_threshold,
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intersect_ray_segment_fac,
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project_co_v3,
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)
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VERT = 1
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EDGE = 2
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FACE = 4
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class _SnapObjectData():
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def __init__(self, data, omat):
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self.data = data
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self.mat = omat
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class SnapContext():
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def __init__(self, region, space):
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self.freed = False
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self.snap_objects = []
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self.drawn_count = 0
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self._offset_cur = 1 # Starts with index 1
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self.region = region
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self.rv3d = space.region_3d
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self.proj_mat = Matrix.Identity(4)
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self.depth_range = Vector((space.clip_start, space.clip_end))
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self.mval = Vector((0, 0))
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self._snap_mode = VERT | EDGE | FACE
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self.set_pixel_dist(12)
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self._offscreen = gpu.offscreen.new(self.region.width, self.region.height)
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self._texture = self._offscreen.color_texture
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bgl.glBindTexture(bgl.GL_TEXTURE_2D, self._texture)
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NULL = VoidBufValue(0)
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bgl.glTexImage2D(bgl.GL_TEXTURE_2D, 0, bgl.GL_R32UI, self.region.width, self.region.height, 0, bgl.GL_RED_INTEGER, bgl.GL_UNSIGNED_INT, NULL.buf)
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del NULL
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bgl.glTexParameteri(bgl.GL_TEXTURE_2D, bgl.GL_TEXTURE_MIN_FILTER, bgl.GL_NEAREST)
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bgl.glTexParameteri(bgl.GL_TEXTURE_2D, bgl.GL_TEXTURE_MAG_FILTER, bgl.GL_NEAREST)
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bgl.glBindTexture(bgl.GL_TEXTURE_2D, 0)
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self.winsize = Vector((self._offscreen.width, self._offscreen.height))
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## PRIVATE ##
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def _get_snap_obj_by_index(self, index):
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for snap_obj in self.snap_objects[:self.drawn_count]:
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data = snap_obj.data[1]
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if index < data.first_index + data.get_tot_elems():
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return snap_obj
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return None
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def _get_nearest_index(self):
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loc = [self._dist_px, self._dist_px]
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d = 1
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m = self.threshold
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max = 2 * m - 1
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offset = 1
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last_snap_obj = None
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r_value = 0
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while m < max:
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for i in range(2):
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while 2 * loc[i] * d < m:
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value = int(self._snap_buffer[loc[0]][loc[1]])
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loc[i] += d
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if value >= offset:
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r_value = value
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snap_obj = self._get_snap_obj_by_index(r_value)
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if self._snap_mode & FACE and self._snap_mode & (VERT | EDGE) and last_snap_obj != snap_obj:
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data = snap_obj.data[1]
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offset = data.first_index + data.num_tris
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last_snap_obj = snap_obj
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continue
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return snap_obj, r_value
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d = -d
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m += 4 * self._dist_px * d + 1
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return last_snap_obj, r_value
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def _get_loc(self, snap_obj, index):
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index -= snap_obj.data[1].first_index
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gpu_data = snap_obj.data[1]
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if gpu_data.draw_tris:
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if index < snap_obj.data[1].num_tris:
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tri_verts = gpu_data.get_tri_verts(index)
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tri_co = [snap_obj.mat * Vector(v) for v in gpu_data.get_tri_co(index)]
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return intersect_ray_tri(*tri_co, *self.last_ray, False), tri_verts
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index -= gpu_data.num_tris
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if gpu_data.draw_edges:
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if index < snap_obj.data[1].num_edges:
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edge_verts = gpu_data.get_edge_verts(index)
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edge_co = [snap_obj.mat * Vector(v) for v in gpu_data.get_edge_co(index)]
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fac = intersect_ray_segment_fac(*edge_co, *self.last_ray)
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if (self._snap_mode) & VERT and (fac < 0.25 or fac > 0.75):
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co = edge_co[0] if fac < 0.5 else edge_co[1]
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proj_co = project_co_v3(self, co)
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dist = self.mval - proj_co
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if abs(dist.x) < self._dist_px and abs(dist.y) < self._dist_px:
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return co, (edge_verts[0] if fac < 0.5 else edge_verts[1],)
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if fac <= 0.0:
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co = edge_co[0]
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elif fac >= 1.0:
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co = edge_co[1]
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else:
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co = edge_co[0] + fac * (edge_co[1] - edge_co[0])
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return co, edge_verts
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index -= gpu_data.num_edges
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if gpu_data.draw_verts:
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if index < snap_obj.data[1].num_verts:
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return snap_obj.mat * Vector(gpu_data.get_loosevert_co(index)), (gpu_data.get_loosevert_index(index),)
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return None, None
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def _get_snap_obj_by_obj(self, obj):
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for snap_obj in self.snap_objects:
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if obj == snap_obj.data[0]:
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return snap_obj
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def __del__(self):
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if not self.freed:
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self._offscreen.free()
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del self.snap_objects
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## PUBLIC ##
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def update_all(self):
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self.drawn_count = 0
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self._offset_cur = 1
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bgl.glClearColor(0.0, 0.0, 0.0, 0.0)
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bgl.glClear(bgl.GL_COLOR_BUFFER_BIT | bgl.GL_DEPTH_BUFFER_BIT)
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def update_drawn_snap_object(self, snap_obj):
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if len(snap_obj.data) > 1:
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del snap_obj.data[1:]
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#self.update_all()
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# Update on next snap_get call #
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self.proj_mat = Matrix.Identity(4)
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def use_clip_planes(self, value):
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planes = get_clip_planes(self.rv3d)
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if planes:
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self._store_current_shader_state()
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GPU_Indices_Mesh.shader
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bgl.glUseProgram(GPU_Indices_Mesh.shader.program)
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bgl.glUniform1i(GPU_Indices_Mesh.unif_use_clip_planes, value)
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bgl.glUniform4fv(GPU_Indices_Mesh.unif_clip_plane, 4, planes)
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self._restore_shader_state()
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def set_pixel_dist(self, dist_px):
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self._dist_px = int(dist_px)
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self._dist_px_sq = self._dist_px ** 2
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self.threshold = 2 * self._dist_px + 1
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self._snap_buffer = bgl.Buffer(bgl.GL_FLOAT, (self.threshold, self.threshold))
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def set_snap_mode(self, snap_to_vert, snap_to_edge, snap_to_face):
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snap_mode = 0
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if snap_to_vert:
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snap_mode |= VERT
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if snap_to_edge:
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snap_mode |= EDGE
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if snap_to_face:
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snap_mode |= FACE
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if snap_mode != self._snap_mode:
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self._snap_mode = snap_mode
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self.update_all()
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def add_obj(self, obj, matrix):
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matrix = matrix.freeze()
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snap_obj = self._get_snap_obj_by_obj(obj)
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if not snap_obj:
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self.snap_objects.append(_SnapObjectData([obj], matrix))
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else:
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self.snap_objects.append(_SnapObjectData(snap_obj.data, matrix))
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return self.snap_objects[-1]
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def get_ray(self, mval):
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self.last_ray = _get_ray(self.region, self.rv3d, mval)
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return self.last_ray
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def snap_get(self, mval):
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ret = None, None
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self.mval[:] = mval
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snap_vert = self._snap_mode & VERT != 0
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snap_edge = self._snap_mode & EDGE != 0
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snap_face = self._snap_mode & FACE != 0
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gpu_Indices_enable_state()
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self._offscreen.bind()
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#bgl.glDisable(bgl.GL_DITHER) # dithering and AA break color coding, so disable #
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#multisample_enabled = bgl.glIsEnabled(bgl.GL_MULTISAMPLE)
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#bgl.glDisable(bgl.GL_MULTISAMPLE)
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bgl.glEnable(bgl.GL_DEPTH_TEST)
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proj_mat = self.rv3d.perspective_matrix.copy()
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if self.proj_mat != proj_mat:
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self.proj_mat = proj_mat
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GPU_Indices_Mesh.set_ProjectionMatrix(self.proj_mat)
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self.update_all()
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ray_dir, ray_orig = self.get_ray(mval)
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for i, snap_obj in enumerate(self.snap_objects[self.drawn_count:], self.drawn_count):
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obj = snap_obj.data[0]
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bbmin = Vector(obj.bound_box[0])
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bbmax = Vector(obj.bound_box[6])
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if bbmin != bbmax:
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MVP = proj_mat * snap_obj.mat
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mat_inv = snap_obj.mat.inverted()
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ray_orig_local = mat_inv * ray_orig
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ray_dir_local = ray_dir * snap_obj.mat
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in_threshold = intersect_boundbox_threshold(self, MVP, ray_orig_local, ray_dir_local, bbmin, bbmax)
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else:
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proj_co = project_co_v3(self, snap_obj.mat.translation)
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dist = self.mval - proj_co
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in_threshold = abs(dist.x) < self._dist_px and abs(dist.y) < self._dist_px
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#snap_obj.data[1] = primitive_point
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if in_threshold:
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if len(snap_obj.data) == 1:
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snap_obj.data.append(GPU_Indices_Mesh(obj, snap_face, snap_edge, snap_vert))
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snap_obj.data[1].set_draw_mode(snap_face, snap_edge, snap_vert)
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snap_obj.data[1].set_ModelViewMatrix(snap_obj.mat)
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snap_obj.data[1].Draw(self._offset_cur)
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self._offset_cur += snap_obj.data[1].get_tot_elems()
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self.snap_objects[self.drawn_count], self.snap_objects[i] = self.snap_objects[i], self.snap_objects[self.drawn_count]
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self.drawn_count += 1
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bgl.glReadBuffer(bgl.GL_COLOR_ATTACHMENT0)
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bgl.glReadPixels(
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int(self.mval[0]) - self._dist_px, int(self.mval[1]) - self._dist_px,
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self.threshold, self.threshold, bgl.GL_RED_INTEGER, bgl.GL_UNSIGNED_INT, self._snap_buffer)
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bgl.glReadBuffer(bgl.GL_BACK)
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snap_obj, index = self._get_nearest_index()
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#print(index)
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if snap_obj:
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ret = self._get_loc(snap_obj, index)
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self._offscreen.unbind()
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gpu_Indices_restore_state()
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return snap_obj, ret[0], ret[1]
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def free(self):
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self.__del__()
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self.freed = True
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# ##### BEGIN GPL LICENSE BLOCK #####
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 3
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# ##### END GPL LICENSE BLOCK #####
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import bgl
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import ctypes
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import numpy as np
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# figure out size of _Py_ssize_t
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if hasattr(ctypes.pythonapi, 'Py_InitModule4_64'):
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_Py_ssize_t = ctypes.c_int64
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else:
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_Py_ssize_t = ctypes.c_int
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class _PyObject(ctypes.Structure):
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pass
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_PyObject._fields_ = [
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('ob_refcnt', _Py_ssize_t),
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('ob_type', ctypes.POINTER(_PyObject)),
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]
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if object.__basicsize__ != ctypes.sizeof(_PyObject):
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# python with trace
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class _PyObject(ctypes.Structure):
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_fields_ = [
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('_ob_next', ctypes.POINTER(_PyObject)),
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('_ob_prev', ctypes.POINTER(_PyObject)),
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('ob_refcnt', _Py_ssize_t),
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('ob_type', ctypes.POINTER(_PyObject)),
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]
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class _PyVarObject(_PyObject):
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_fields_ = [
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('ob_size', _Py_ssize_t),
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]
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class C_Buffer(_PyVarObject):
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_fields_ = [
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("parent", ctypes.py_object),
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("type", ctypes.c_int),
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("ndimensions", ctypes.c_int),
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("dimensions", ctypes.POINTER(ctypes.c_int)),
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("buf", ctypes.c_void_p),
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]
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assert ctypes.sizeof(C_Buffer) == bgl.Buffer.__basicsize__
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class VoidBufValue():
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def __init__(self, value):
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self.buf = bgl.Buffer(bgl.GL_BYTE, 1)
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self.c_buf = C_Buffer.from_address(id(self.buf))
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self._allocated_buf = self.c_buf.buf
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self.c_buf.buf = value
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self.c_buf.type = 0 # allows repr
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def __del__(self):
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self.c_buf.buf = self._allocated_buf
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#del self._allocated_buf
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del self.buf
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def np_array_as_bgl_Buffer(array):
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type = array.dtype
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if type == np.int8:
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type = bgl.GL_BYTE
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elif type == np.int16:
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type = bgl.GL_SHORT
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elif type == np.int32:
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type = bgl.GL_INT
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elif type == np.float32:
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type = bgl.GL_FLOAT
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elif type == np.float64:
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type = bgl.GL_DOUBLE
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else:
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raise
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_decref = ctypes.pythonapi.Py_DecRef
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_incref = ctypes.pythonapi.Py_IncRef
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_decref.argtypes = _incref.argtypes = [ctypes.py_object]
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_decref.restype = _incref.restype = None
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buf = bgl.Buffer(bgl.GL_BYTE, (1, *array.shape))[0]
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c_buf = C_Buffer.from_address(id(buf))
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_decref(c_buf.parent)
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_incref(array)
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c_buf.parent = array # Prevents MEM_freeN
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c_buf.type = type
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c_buf.buf = array.ctypes.data
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return buf
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def bgl_Buffer_reshape(buf, shape):
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assert np.prod(buf.dimensions) == np.prod(shape)
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c_buf = C_Buffer.from_address(id(buf))
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c_buf.ndimensions = len(shape)
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tmp_buf = bgl.Buffer(c_buf.type, (1,) * len(shape))
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c_tmp_buf = C_Buffer.from_address(id(tmp_buf))
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for i, v in enumerate(shape):
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c_tmp_buf.dimensions[i] = v
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offset = C_Buffer.dimensions.offset
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a = ctypes.pointer(ctypes.c_void_p.from_address(id(tmp_buf) + offset))
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b = ctypes.pointer(ctypes.c_void_p.from_address(id(buf) + offset))
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a[0], b[0] = b[0], a[0]
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del c_buf
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del c_tmp_buf
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del tmp_buf
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def get_clip_planes(rv3d):
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#(int)(&((struct RegionView3D *)0)->rflag) == 842
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#(int)(&((struct RegionView3D *)0)->clip) == 464
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rv3d_ptr = rv3d.as_pointer()
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rflag = ctypes.c_short.from_address(rv3d_ptr + 842).value
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if rflag & 4: # RV3D_CLIPPING
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clip = (6 * (4 * ctypes.c_float)).from_address(rv3d_ptr + 464)
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return bgl.Buffer(bgl.GL_FLOAT, (6, 4), clip)
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@ -0,0 +1,505 @@
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# ##### BEGIN GPL LICENSE BLOCK #####
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#
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||||
# This program is free software; you can redistribute it and/or
|
||||
# modify it under the terms of the GNU General Public License
|
||||
# as published by the Free Software Foundation; either version 3
|
||||
# of the License, or (at your option) any later version.
|
||||
#
|
||||
# This program is distributed in the hope that it will be useful,
|
||||
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
# GNU General Public License for more details.
|
||||
#
|
||||
# You should have received a copy of the GNU General Public License
|
||||
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
#
|
||||
# ##### END GPL LICENSE BLOCK #####
|
||||
|
||||
|
||||
import bgl
|
||||
import bmesh
|
||||
import numpy as np
|
||||
from mathutils import Matrix
|
||||
|
||||
from .bgl_ext import VoidBufValue, np_array_as_bgl_Buffer, bgl_Buffer_reshape
|
||||
from .utils_shader import Shader
|
||||
|
||||
|
||||
def load_shader(shadername):
|
||||
from os import path
|
||||
with open(path.join(path.dirname(__file__), 'resources', shadername), 'r') as f:
|
||||
return f.read()
|
||||
|
||||
|
||||
def get_mesh_vert_co_array(me):
|
||||
tot_vco = len(me.vertices)
|
||||
if tot_vco:
|
||||
verts_co = bgl.Buffer(bgl.GL_FLOAT, (tot_vco * 3))
|
||||
me.vertices.foreach_get("co", verts_co)
|
||||
bgl_Buffer_reshape(verts_co, (tot_vco, 3))
|
||||
return verts_co
|
||||
return None
|
||||
|
||||
|
||||
def get_bmesh_vert_co_array(bm):
|
||||
tot_vco = len(bm.verts)
|
||||
if tot_vco:
|
||||
return bgl.Buffer(bgl.GL_FLOAT, (tot_vco, 3), [v.co for v in bm.verts])
|
||||
return None
|
||||
|
||||
|
||||
def get_mesh_tri_verts_array(me):
|
||||
num_tris = len(me.loops) - 2 * len(me.polygons)
|
||||
if num_tris:
|
||||
bm = bmesh.new()
|
||||
bm.from_mesh(me, face_normals=False)
|
||||
ltris = bm.calc_tessface()
|
||||
tris = bgl.Buffer(bgl.GL_INT, (num_tris, 3))
|
||||
for i, ltri in enumerate(ltris):
|
||||
tris[i] = ltri[0].vert.index, ltri[1].vert.index, ltri[2].vert.index
|
||||
bm.free()
|
||||
return tris
|
||||
return None
|
||||
|
||||
|
||||
def get_mesh_tri_co_array(me, tri_verts):
|
||||
num_tris = len(tri_verts)
|
||||
if num_tris:
|
||||
verts = me.vertices
|
||||
tris = bgl.Buffer(bgl.GL_FLOAT, (num_tris, 3, 3))
|
||||
for i, tri in enumerate(tri_verts):
|
||||
tris[i] = verts[tri[0]].co, verts[tri[1]].co, verts[tri[2]].co
|
||||
return tris
|
||||
return None
|
||||
|
||||
|
||||
def get_bmesh_tri_verts_array(bm):
|
||||
ltris = bm.calc_tessface()
|
||||
tris = [[ltri[0].vert.index, ltri[1].vert.index, ltri[2].vert.index] for ltri in ltris if not ltri[0].face.hide]
|
||||
if tris:
|
||||
return bgl.Buffer(bgl.GL_INT, (len(tris), 3), tris)
|
||||
return None
|
||||
|
||||
|
||||
def get_bmesh_tri_co_array(bm, tri_verts):
|
||||
num_tris = len(tri_verts)
|
||||
if num_tris:
|
||||
verts = bm.verts
|
||||
tris = bgl.Buffer(bgl.GL_FLOAT, (num_tris, 3, 3))
|
||||
for i, tri in enumerate(tri_verts):
|
||||
tris[i] = verts[tri[0]].co, verts[tri[1]].co, verts[tri[2]].co
|
||||
return tris
|
||||
return None
|
||||
|
||||
|
||||
def get_mesh_edge_verts_array(me):
|
||||
tot_edges = len(me.edges)
|
||||
if tot_edges:
|
||||
edge_verts = np.empty(tot_edges * 2, 'i4')
|
||||
me.edges.foreach_get("vertices", edge_verts)
|
||||
edge_verts.shape = tot_edges, 2
|
||||
return np_array_as_bgl_Buffer(edge_verts)
|
||||
return None
|
||||
|
||||
|
||||
def get_mesh_edge_co_array(me, edge_verts):
|
||||
if edge_verts:
|
||||
edges_co = bgl.Buffer(bgl.GL_FLOAT, (len(edge_verts), 2, 3))
|
||||
verts = me.vertices
|
||||
for i, (v0, v1) in enumerate(edge_verts):
|
||||
edges_co[i][0] = verts[v0].co
|
||||
edges_co[i][1] = verts[v1].co
|
||||
return edges_co
|
||||
return None
|
||||
|
||||
|
||||
def get_bmesh_edge_verts_array(bm):
|
||||
bm.edges.ensure_lookup_table()
|
||||
edges = [[e.verts[0].index, e.verts[1].index] for e in bm.edges if not e.hide]
|
||||
if edges:
|
||||
return bgl.Buffer(bgl.GL_INT, (len(edges), 2), edges)
|
||||
return None
|
||||
|
||||
|
||||
def get_bmesh_edge_co_array(bm, edge_verts):
|
||||
if edge_verts:
|
||||
edges_co = bgl.Buffer(bgl.GL_FLOAT, (len(edge_verts), 2, 3))
|
||||
verts = bm.verts
|
||||
for i, (v0, v1) in enumerate(edge_verts):
|
||||
edges_co[i][0] = verts[v0].co
|
||||
edges_co[i][1] = verts[v1].co
|
||||
return edges_co
|
||||
return None
|
||||
|
||||
|
||||
def get_mesh_loosevert_array(me, edges):
|
||||
verts = np.arange(len(me.vertices))
|
||||
|
||||
mask = np.in1d(verts, edges, invert=True)
|
||||
|
||||
verts = verts[mask]
|
||||
if len(verts):
|
||||
return bgl.Buffer(bgl.GL_INT, len(verts), verts)
|
||||
return None
|
||||
|
||||
|
||||
def get_bmesh_loosevert_array(bm):
|
||||
looseverts = [v.index for v in bm.verts if not (v.link_edges or v.hide)]
|
||||
if looseverts:
|
||||
return bgl.Buffer(bgl.GL_INT, len(looseverts), looseverts)
|
||||
return None
|
||||
|
||||
|
||||
class _Mesh_Arrays():
|
||||
def __init__(self, obj, create_tris, create_edges, create_looseverts):
|
||||
self.tri_verts = self.edge_verts = self.looseverts = None
|
||||
self.tris_co = self.edges_co = self.looseverts_co = None
|
||||
if obj.type == 'MESH':
|
||||
me = obj.data
|
||||
if me.is_editmode:
|
||||
bm = bmesh.from_edit_mesh(me)
|
||||
bm.verts.ensure_lookup_table()
|
||||
|
||||
if False: #Blender 2.8
|
||||
self.verts = get_bmesh_vert_co_array(bm)
|
||||
if create_tris:
|
||||
self.tri_verts = get_bmesh_tri_verts_array(bm)
|
||||
self.tris_co = get_bmesh_tri_co_array(bm, self.tri_verts)
|
||||
if create_edges:
|
||||
self.edge_verts = get_bmesh_edge_verts_array(bm)
|
||||
self.edges_co = get_bmesh_edge_co_array(bm, self.edge_verts)
|
||||
if create_looseverts:
|
||||
self.looseverts = get_bmesh_loosevert_array(bm)
|
||||
if self.looseverts:
|
||||
self.looseverts_co = bgl.Buffer(bgl.GL_FLOAT, (len(self.looseverts), 3), [bm.verts[i].co for i in self.looseverts])
|
||||
else:
|
||||
if False: #Blender 2.8
|
||||
self.verts = get_mesh_vert_co_array(me)
|
||||
if create_tris:
|
||||
self.tri_verts = get_mesh_tri_verts_array(me)
|
||||
self.tris_co = get_mesh_tri_co_array(me, self.tri_verts)
|
||||
if create_edges or create_looseverts:
|
||||
self.edge_verts = get_mesh_edge_verts_array(me)
|
||||
|
||||
if create_edges:
|
||||
self.edges_co = get_mesh_edge_co_array(me, self.edge_verts)
|
||||
if create_looseverts:
|
||||
self.looseverts = get_mesh_loosevert_array(me, self.edge_verts)
|
||||
if self.looseverts:
|
||||
self.looseverts_co = bgl.Buffer(bgl.GL_FLOAT, (len(self.looseverts), 3), [me.vertices[i].co for i in self.looseverts])
|
||||
|
||||
else: #TODO
|
||||
self.looseverts = bgl.Buffer(bgl.GL_INT, 1)
|
||||
self.looseverts_co = bgl.Buffer(bgl.GL_FLOAT, (1, 3))
|
||||
|
||||
def __del__(self):
|
||||
del self.tri_verts, self.edge_verts, self.looseverts
|
||||
del self.tris_co, self.edges_co, self.looseverts_co
|
||||
|
||||
|
||||
class GPU_Indices_Mesh():
|
||||
shader = Shader(
|
||||
load_shader('3D_vert.glsl'),
|
||||
None,
|
||||
load_shader('primitive_id_frag.glsl'),
|
||||
)
|
||||
|
||||
unif_use_clip_planes = bgl.glGetUniformLocation(shader.program, 'use_clip_planes')
|
||||
unif_clip_plane = bgl.glGetUniformLocation(shader.program, 'clip_plane')
|
||||
|
||||
unif_MVP = bgl.glGetUniformLocation(shader.program, 'MVP')
|
||||
unif_MV = bgl.glGetUniformLocation(shader.program, 'MV')
|
||||
unif_offset = bgl.glGetUniformLocation(shader.program, 'offset')
|
||||
|
||||
attr_pos = bgl.glGetAttribLocation(shader.program, 'pos')
|
||||
attr_primitive_id = bgl.glGetAttribLocation(shader.program, 'primitive_id')
|
||||
|
||||
P = bgl.Buffer(bgl.GL_FLOAT, (4, 4))
|
||||
MV = bgl.Buffer(bgl.GL_FLOAT, (4, 4))
|
||||
|
||||
# returns of public API #
|
||||
vert_index = bgl.Buffer(bgl.GL_INT, 1)
|
||||
|
||||
tri_co = bgl.Buffer(bgl.GL_FLOAT, (3, 3))
|
||||
edge_co = bgl.Buffer(bgl.GL_FLOAT, (2, 3))
|
||||
vert_co = bgl.Buffer(bgl.GL_FLOAT, 3)
|
||||
|
||||
def __init__(self, obj, draw_tris, draw_edges, draw_verts):
|
||||
self._NULL = VoidBufValue(0)
|
||||
|
||||
self.MVP = bgl.Buffer(bgl.GL_FLOAT, (4, 4))
|
||||
|
||||
self.obj = obj
|
||||
self.draw_tris = draw_tris
|
||||
self.draw_edges = draw_edges
|
||||
self.draw_verts = draw_verts
|
||||
|
||||
self.vbo = None
|
||||
self.vbo_tris = None
|
||||
self.vbo_edges = None
|
||||
self.vbo_verts = None
|
||||
|
||||
## Create VAO ##
|
||||
self.vao = bgl.Buffer(bgl.GL_INT, 1)
|
||||
bgl.glGenVertexArrays(1, self.vao)
|
||||
bgl.glBindVertexArray(self.vao[0])
|
||||
|
||||
## Init Array ##
|
||||
mesh_arrays = _Mesh_Arrays(obj, draw_tris, draw_edges, draw_verts)
|
||||
|
||||
## Create VBO for vertices ##
|
||||
if False: # Blender 2.8
|
||||
if not mesh_arrays.verts:
|
||||
self.draw_tris = False
|
||||
self.draw_edges = False
|
||||
self.draw_verts = False
|
||||
return
|
||||
|
||||
self.vbo_len = len(mesh_arrays.verts)
|
||||
|
||||
self.vbo = bgl.Buffer(bgl.GL_INT, 1)
|
||||
bgl.glGenBuffers(1, self.vbo)
|
||||
bgl.glBindBuffer(bgl.GL_ARRAY_BUFFER, self.vbo[0])
|
||||
bgl.glBufferData(bgl.GL_ARRAY_BUFFER, self.vbo_len * 12, mesh_arrays.verts, bgl.GL_STATIC_DRAW)
|
||||
|
||||
## Create VBO for Tris ##
|
||||
if mesh_arrays.tri_verts:
|
||||
self.tri_verts = mesh_arrays.tri_verts
|
||||
self.num_tris = len(self.tri_verts)
|
||||
|
||||
self.vbo_tris = bgl.Buffer(bgl.GL_INT, 1)
|
||||
bgl.glGenBuffers(1, self.vbo_tris)
|
||||
bgl.glBindBuffer(bgl.GL_ARRAY_BUFFER, self.vbo_tris[0])
|
||||
bgl.glBufferData(bgl.GL_ARRAY_BUFFER, self.num_tris * 36, mesh_arrays.tris_co, bgl.GL_STATIC_DRAW)
|
||||
|
||||
tri_indices = np.repeat(np.arange(self.num_tris, dtype = 'f4'), 3)
|
||||
self.vbo_tri_indices = bgl.Buffer(bgl.GL_INT, 1)
|
||||
bgl.glGenBuffers(1, self.vbo_tri_indices)
|
||||
bgl.glBindBuffer(bgl.GL_ARRAY_BUFFER, self.vbo_tri_indices[0])
|
||||
bgl.glBufferData(bgl.GL_ARRAY_BUFFER, self.num_tris * 12, np_array_as_bgl_Buffer(tri_indices), bgl.GL_STATIC_DRAW)
|
||||
del tri_indices
|
||||
|
||||
else:
|
||||
self.num_tris = 0
|
||||
self.draw_tris = False
|
||||
|
||||
## Create VBO for Edges ##
|
||||
if mesh_arrays.edge_verts:
|
||||
self.edge_verts = mesh_arrays.edge_verts
|
||||
self.num_edges = len(self.edge_verts)
|
||||
|
||||
self.vbo_edges = bgl.Buffer(bgl.GL_INT, 1)
|
||||
bgl.glGenBuffers(1, self.vbo_edges)
|
||||
bgl.glBindBuffer(bgl.GL_ARRAY_BUFFER, self.vbo_edges[0])
|
||||
bgl.glBufferData(bgl.GL_ARRAY_BUFFER, self.num_edges * 24, mesh_arrays.edges_co, bgl.GL_STATIC_DRAW)
|
||||
|
||||
edge_indices = np.repeat(np.arange(self.num_edges, dtype = 'f4'),2)
|
||||
self.vbo_edge_indices = bgl.Buffer(bgl.GL_INT, 1)
|
||||
bgl.glGenBuffers(1, self.vbo_edge_indices)
|
||||
bgl.glBindBuffer(bgl.GL_ARRAY_BUFFER, self.vbo_edge_indices[0])
|
||||
bgl.glBufferData(bgl.GL_ARRAY_BUFFER, self.num_edges * 8, np_array_as_bgl_Buffer(edge_indices), bgl.GL_STATIC_DRAW)
|
||||
del edge_indices
|
||||
else:
|
||||
self.num_edges = 0
|
||||
self.draw_edges = False
|
||||
|
||||
## Create EBO for Loose Verts ##
|
||||
if mesh_arrays.looseverts:
|
||||
self.looseverts = mesh_arrays.looseverts
|
||||
self.num_verts = len(mesh_arrays.looseverts)
|
||||
|
||||
self.vbo_verts = bgl.Buffer(bgl.GL_INT, 1)
|
||||
bgl.glGenBuffers(1, self.vbo_verts)
|
||||
bgl.glBindBuffer(bgl.GL_ARRAY_BUFFER, self.vbo_verts[0])
|
||||
bgl.glBufferData(bgl.GL_ARRAY_BUFFER, self.num_verts * 12, mesh_arrays.looseverts_co, bgl.GL_STATIC_DRAW)
|
||||
|
||||
looseverts_indices = np.arange(self.num_verts, dtype = 'f4')
|
||||
self.vbo_looseverts_indices = bgl.Buffer(bgl.GL_INT, 1)
|
||||
bgl.glGenBuffers(1, self.vbo_looseverts_indices)
|
||||
bgl.glBindBuffer(bgl.GL_ARRAY_BUFFER, self.vbo_looseverts_indices[0])
|
||||
bgl.glBufferData(bgl.GL_ARRAY_BUFFER, self.num_verts * 4, np_array_as_bgl_Buffer(looseverts_indices), bgl.GL_STATIC_DRAW)
|
||||
del looseverts_indices
|
||||
else:
|
||||
self.num_verts = 0
|
||||
self.draw_verts = False
|
||||
|
||||
del mesh_arrays
|
||||
|
||||
bgl.glBindVertexArray(0)
|
||||
|
||||
|
||||
def get_tot_elems(self):
|
||||
tot = 0
|
||||
|
||||
if self.draw_tris:
|
||||
tot += self.num_tris
|
||||
|
||||
if self.draw_edges:
|
||||
tot += self.num_edges
|
||||
|
||||
if self.draw_verts:
|
||||
tot += self.num_verts
|
||||
|
||||
return tot
|
||||
|
||||
|
||||
def set_draw_mode(self, draw_tris, draw_edges, draw_verts):
|
||||
self.draw_tris = draw_tris and self.vbo_tris
|
||||
self.draw_edges = draw_edges and self.vbo_edges
|
||||
self.draw_verts = draw_verts and self.vbo_verts
|
||||
|
||||
|
||||
@classmethod
|
||||
def set_ProjectionMatrix(cls, P):
|
||||
cls.P[:] = P
|
||||
|
||||
|
||||
def set_ModelViewMatrix(self, MV):
|
||||
self.MV[:] = MV[:]
|
||||
self.MVP[:] = Matrix(self.P) * MV
|
||||
|
||||
|
||||
def Draw(self, index_offset):
|
||||
self.first_index = index_offset
|
||||
bgl.glUseProgram(self.shader.program)
|
||||
bgl.glBindVertexArray(self.vao[0])
|
||||
|
||||
bgl.glUniformMatrix4fv(self.unif_MV, 1, bgl.GL_TRUE, self.MV)
|
||||
bgl.glUniformMatrix4fv(self.unif_MVP, 1, bgl.GL_TRUE, self.MVP)
|
||||
|
||||
if self.draw_tris:
|
||||
bgl.glUniform1f(self.unif_offset, float(index_offset)) # bgl has no glUniform1ui :\
|
||||
|
||||
bgl.glBindBuffer(bgl.GL_ARRAY_BUFFER, self.vbo_tris[0])
|
||||
bgl.glEnableVertexAttribArray(self.attr_pos)
|
||||
bgl.glVertexAttribPointer(self.attr_pos, 3, bgl.GL_FLOAT, bgl.GL_FALSE, 0, self._NULL.buf)
|
||||
|
||||
bgl.glBindBuffer(bgl.GL_ARRAY_BUFFER, self.vbo_tri_indices[0])
|
||||
bgl.glEnableVertexAttribArray(self.attr_primitive_id)
|
||||
bgl.glVertexAttribPointer(self.attr_primitive_id, 1, bgl.GL_FLOAT, bgl.GL_FALSE, 0, self._NULL.buf)
|
||||
|
||||
bgl.glDrawArrays(bgl.GL_TRIANGLES, 0, self.num_tris * 3)
|
||||
|
||||
index_offset += self.num_tris
|
||||
bgl.glDepthRange(-0.00005, 0.99995)
|
||||
|
||||
if self.draw_edges:
|
||||
bgl.glUniform1f(self.unif_offset, float(index_offset)) #TODO: use glUniform1ui
|
||||
|
||||
bgl.glBindBuffer(bgl.GL_ARRAY_BUFFER, self.vbo_edges[0])
|
||||
bgl.glVertexAttribPointer(self.attr_pos, 3, bgl.GL_FLOAT, bgl.GL_FALSE, 0, self._NULL.buf)
|
||||
bgl.glEnableVertexAttribArray(self.attr_pos)
|
||||
|
||||
bgl.glBindBuffer(bgl.GL_ARRAY_BUFFER, self.vbo_edge_indices[0])
|
||||
bgl.glVertexAttribPointer(self.attr_primitive_id, 1, bgl.GL_FLOAT, bgl.GL_FALSE, 0, self._NULL.buf)
|
||||
bgl.glEnableVertexAttribArray(self.attr_primitive_id)
|
||||
|
||||
bgl.glDrawArrays(bgl.GL_LINES, 0, self.num_edges * 2)
|
||||
|
||||
index_offset += self.num_edges
|
||||
|
||||
if self.draw_verts:
|
||||
bgl.glUniform1f(self.unif_offset, float(index_offset)) #TODO: use glUniform1ui
|
||||
|
||||
bgl.glBindBuffer(bgl.GL_ARRAY_BUFFER, self.vbo_verts[0])
|
||||
bgl.glVertexAttribPointer(self.attr_pos, 3, bgl.GL_FLOAT, bgl.GL_FALSE, 0, self._NULL.buf)
|
||||
bgl.glEnableVertexAttribArray(self.attr_pos)
|
||||
|
||||
bgl.glBindBuffer(bgl.GL_ARRAY_BUFFER, self.vbo_looseverts_indices[0])
|
||||
bgl.glVertexAttribPointer(self.attr_primitive_id, 1, bgl.GL_FLOAT, bgl.GL_FALSE, 0, self._NULL.buf)
|
||||
bgl.glEnableVertexAttribArray(self.attr_primitive_id)
|
||||
|
||||
bgl.glDrawArrays(bgl.GL_POINTS, 0, self.num_verts)
|
||||
|
||||
bgl.glDepthRange(0.0, 1.0)
|
||||
|
||||
|
||||
def get_tri_co(self, index):
|
||||
bgl.glBindVertexArray(self.vao[0])
|
||||
bgl.glBindBuffer(bgl.GL_ARRAY_BUFFER, self.vbo_tris[0])
|
||||
bgl.glGetBufferSubData(bgl.GL_ARRAY_BUFFER, index * 36, 36, self.tri_co)
|
||||
bgl.glBindVertexArray(0)
|
||||
return self.tri_co
|
||||
|
||||
|
||||
def get_edge_co(self, index):
|
||||
bgl.glBindVertexArray(self.vao[0])
|
||||
bgl.glBindBuffer(bgl.GL_ARRAY_BUFFER, self.vbo_edges[0])
|
||||
bgl.glGetBufferSubData(bgl.GL_ARRAY_BUFFER, index * 24, 24, self.edge_co)
|
||||
bgl.glBindVertexArray(0)
|
||||
return self.edge_co
|
||||
|
||||
|
||||
def get_loosevert_co(self, index):
|
||||
bgl.glBindVertexArray(self.vao[0])
|
||||
bgl.glBindBuffer(bgl.GL_ARRAY_BUFFER, self.vbo_verts[0])
|
||||
bgl.glGetBufferSubData(bgl.GL_ARRAY_BUFFER, index * 12, 12, self.vert_co)
|
||||
bgl.glBindVertexArray(0)
|
||||
return self.vert_co
|
||||
|
||||
|
||||
def get_tri_verts(self, index):
|
||||
return self.tri_verts[index]
|
||||
|
||||
|
||||
def get_edge_verts(self, index):
|
||||
return self.edge_verts[index]
|
||||
|
||||
|
||||
def get_loosevert_index(self, index):
|
||||
return self.looseverts[index]
|
||||
|
||||
|
||||
def __del__(self):
|
||||
del self._NULL
|
||||
|
||||
if self.vbo_tris:
|
||||
bgl.glDeleteBuffers(1, self.vbo_tris)
|
||||
bgl.glDeleteBuffers(1, self.vbo_tri_indices)
|
||||
del self.tri_verts
|
||||
|
||||
if self.vbo_edges:
|
||||
bgl.glDeleteBuffers(1, self.vbo_edges)
|
||||
bgl.glDeleteBuffers(1, self.vbo_edge_indices)
|
||||
del self.edge_verts
|
||||
|
||||
if self.vbo_verts:
|
||||
bgl.glDeleteBuffers(1, self.vbo_verts)
|
||||
bgl.glDeleteBuffers(1, self.vbo_looseverts_indices)
|
||||
del self.looseverts
|
||||
|
||||
bgl.glDeleteVertexArrays(1, self.vao)
|
||||
#print('mesh_del', self.obj.name)
|
||||
|
||||
|
||||
class PreviousGLState:
|
||||
buf = bgl.Buffer(bgl.GL_INT, (4, 1))
|
||||
cur_program = buf[0]
|
||||
cur_vao = buf[1]
|
||||
cur_vbo = buf[2]
|
||||
cur_ebo = buf[3]
|
||||
|
||||
|
||||
def _store_current_shader_state(cls):
|
||||
bgl.glGetIntegerv(bgl.GL_CURRENT_PROGRAM, cls.cur_program)
|
||||
bgl.glGetIntegerv(bgl.GL_VERTEX_ARRAY_BINDING, cls.cur_vao)
|
||||
bgl.glGetIntegerv(bgl.GL_ARRAY_BUFFER_BINDING, cls.cur_vbo)
|
||||
bgl.glGetIntegerv(bgl.GL_ELEMENT_ARRAY_BUFFER_BINDING, cls.cur_ebo)
|
||||
|
||||
|
||||
def _restore_shader_state(cls):
|
||||
bgl.glUseProgram(cls.cur_program[0])
|
||||
bgl.glBindVertexArray(cls.cur_vao[0])
|
||||
bgl.glBindBuffer(bgl.GL_ARRAY_BUFFER, cls.cur_vbo[0])
|
||||
bgl.glBindBuffer(bgl.GL_ELEMENT_ARRAY_BUFFER, cls.cur_ebo[0])
|
||||
|
||||
|
||||
def gpu_Indices_enable_state():
|
||||
_store_current_shader_state(PreviousGLState)
|
||||
|
||||
bgl.glUseProgram(GPU_Indices_Mesh.shader.program)
|
||||
#bgl.glBindVertexArray(GPU_Indices_Mesh.vao[0])
|
||||
|
||||
def gpu_Indices_restore_state():
|
||||
bgl.glBindVertexArray(0)
|
||||
_restore_shader_state(PreviousGLState)
|
||||
|
|
@ -0,0 +1,27 @@
|
|||
#version 120
|
||||
|
||||
uniform bool use_clip_planes;
|
||||
uniform vec4 clip_plane[4];
|
||||
varying vec4 clip_distance;
|
||||
|
||||
uniform mat4 MV;
|
||||
uniform mat4 MVP;
|
||||
|
||||
attribute vec3 pos;
|
||||
attribute float primitive_id;
|
||||
varying float primitive_id_var;
|
||||
|
||||
void main()
|
||||
{
|
||||
if (use_clip_planes) {
|
||||
vec4 g_pos = MV * vec4(pos, 1.0);
|
||||
|
||||
clip_distance[0] = dot(clip_plane[0], g_pos);
|
||||
clip_distance[1] = dot(clip_plane[1], g_pos);
|
||||
clip_distance[2] = dot(clip_plane[2], g_pos);
|
||||
clip_distance[3] = dot(clip_plane[3], g_pos);
|
||||
}
|
||||
|
||||
primitive_id_var = primitive_id;
|
||||
gl_Position = MVP * vec4(pos, 1.0);
|
||||
}
|
||||
|
|
@ -0,0 +1,22 @@
|
|||
#version 120
|
||||
|
||||
uniform bool use_clip_planes;
|
||||
varying vec4 clip_distance;
|
||||
|
||||
uniform float offset;
|
||||
|
||||
flat varying float primitive_id_var;
|
||||
|
||||
void main()
|
||||
{
|
||||
if (use_clip_planes &&
|
||||
((clip_distance[0] < 0) ||
|
||||
(clip_distance[1] < 0) ||
|
||||
(clip_distance[2] < 0) ||
|
||||
(clip_distance[3] < 0)))
|
||||
{
|
||||
discard;
|
||||
}
|
||||
|
||||
gl_FragColor = vec4(offset + primitive_id_var, 0, 0, 0);
|
||||
}
|
||||
|
|
@ -0,0 +1,213 @@
|
|||
# ##### BEGIN GPL LICENSE BLOCK #####
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or
|
||||
# modify it under the terms of the GNU General Public License
|
||||
# as published by the Free Software Foundation; either version 3
|
||||
# of the License, or (at your option) any later version.
|
||||
#
|
||||
# This program is distributed in the hope that it will be useful,
|
||||
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
# GNU General Public License for more details.
|
||||
#
|
||||
# You should have received a copy of the GNU General Public License
|
||||
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
#
|
||||
# ##### END GPL LICENSE BLOCK #####
|
||||
|
||||
|
||||
from mathutils import Vector
|
||||
from mathutils.geometry import intersect_point_line
|
||||
|
||||
|
||||
def depth_get(co, ray_start, ray_dir):
|
||||
dvec = co - ray_start
|
||||
return dvec.dot(ray_dir)
|
||||
|
||||
|
||||
def region_2d_to_orig_and_view_vector(region, rv3d, coord):
|
||||
viewinv = rv3d.view_matrix.inverted()
|
||||
persinv = rv3d.perspective_matrix.inverted()
|
||||
|
||||
dx = (2.0 * coord[0] / region.width) - 1.0
|
||||
dy = (2.0 * coord[1] / region.height) - 1.0
|
||||
|
||||
if rv3d.is_perspective:
|
||||
origin_start = viewinv.translation.copy()
|
||||
|
||||
out = Vector((dx, dy, -0.5))
|
||||
|
||||
w = out.dot(persinv[3].xyz) + persinv[3][3]
|
||||
|
||||
view_vector = ((persinv * out) / w) - origin_start
|
||||
else:
|
||||
view_vector = -viewinv.col[2].xyz
|
||||
|
||||
origin_start = ((persinv.col[0].xyz * dx) +
|
||||
(persinv.col[1].xyz * dy) +
|
||||
viewinv.translation)
|
||||
|
||||
view_vector.normalize()
|
||||
return view_vector, origin_start
|
||||
|
||||
|
||||
def project_co_v3(sctx, co):
|
||||
proj_co = sctx.proj_mat * co.to_4d()
|
||||
proj_co.xy /= proj_co.w
|
||||
|
||||
win_half = sctx.winsize * 0.5
|
||||
proj_co[0] = (proj_co[0] + 1.0) * win_half[0]
|
||||
proj_co[1] = (proj_co[1] + 1.0) * win_half[1]
|
||||
|
||||
return proj_co.xy
|
||||
|
||||
|
||||
|
||||
def intersect_boundbox_threshold(sctx, MVP, ray_origin_local, ray_direction_local, bbmin, bbmax):
|
||||
local_bvmin = Vector()
|
||||
local_bvmax = Vector()
|
||||
tmin = Vector()
|
||||
tmax = Vector()
|
||||
|
||||
if (ray_direction_local[0] < 0.0):
|
||||
local_bvmin[0] = bbmax[0]
|
||||
local_bvmax[0] = bbmin[0]
|
||||
else:
|
||||
local_bvmin[0] = bbmin[0]
|
||||
local_bvmax[0] = bbmax[0]
|
||||
|
||||
if (ray_direction_local[1] < 0.0):
|
||||
local_bvmin[1] = bbmax[1]
|
||||
local_bvmax[1] = bbmin[1]
|
||||
else:
|
||||
local_bvmin[1] = bbmin[1]
|
||||
local_bvmax[1] = bbmax[1]
|
||||
|
||||
if (ray_direction_local[2] < 0.0):
|
||||
local_bvmin[2] = bbmax[2]
|
||||
local_bvmax[2] = bbmin[2]
|
||||
else:
|
||||
local_bvmin[2] = bbmin[2]
|
||||
local_bvmax[2] = bbmax[2]
|
||||
|
||||
if (ray_direction_local[0]):
|
||||
tmin[0] = (local_bvmin[0] - ray_origin_local[0]) / ray_direction_local[0]
|
||||
tmax[0] = (local_bvmax[0] - ray_origin_local[0]) / ray_direction_local[0]
|
||||
else:
|
||||
tmin[0] = tmax[0] = sctx.depth_range[1]
|
||||
|
||||
if (ray_direction_local[1]):
|
||||
tmin[1] = (local_bvmin[1] - ray_origin_local[1]) / ray_direction_local[1]
|
||||
tmax[1] = (local_bvmax[1] - ray_origin_local[1]) / ray_direction_local[1]
|
||||
else:
|
||||
tmin[1] = tmax[1] = sctx.depth_range[1]
|
||||
|
||||
if (ray_direction_local[2]):
|
||||
tmin[2] = (local_bvmin[2] - ray_origin_local[2]) / ray_direction_local[2]
|
||||
tmax[2] = (local_bvmax[2] - ray_origin_local[2]) / ray_direction_local[2]
|
||||
else:
|
||||
tmin[2] = tmax[2] = sctx.depth_range[1]
|
||||
|
||||
# `va` and `vb` are the coordinates of the AABB edge closest to the ray #
|
||||
va = Vector()
|
||||
vb = Vector()
|
||||
# `rtmin` and `rtmax` are the minimum and maximum distances of the ray hits on the AABB #
|
||||
|
||||
if ((tmax[0] <= tmax[1]) and (tmax[0] <= tmax[2])):
|
||||
rtmax = tmax[0]
|
||||
va[0] = vb[0] = local_bvmax[0]
|
||||
main_axis = 3
|
||||
elif ((tmax[1] <= tmax[0]) and (tmax[1] <= tmax[2])):
|
||||
rtmax = tmax[1]
|
||||
va[1] = vb[1] = local_bvmax[1]
|
||||
main_axis = 2
|
||||
else:
|
||||
rtmax = tmax[2]
|
||||
va[2] = vb[2] = local_bvmax[2]
|
||||
main_axis = 1
|
||||
|
||||
if ((tmin[0] >= tmin[1]) and (tmin[0] >= tmin[2])):
|
||||
rtmin = tmin[0]
|
||||
va[0] = vb[0] = local_bvmin[0]
|
||||
main_axis -= 3
|
||||
|
||||
elif ((tmin[1] >= tmin[0]) and (tmin[1] >= tmin[2])):
|
||||
rtmin = tmin[1]
|
||||
va[1] = vb[1] = local_bvmin[1]
|
||||
main_axis -= 1
|
||||
|
||||
else:
|
||||
rtmin = tmin[2]
|
||||
va[2] = vb[2] = local_bvmin[2]
|
||||
main_axis -= 2
|
||||
|
||||
if (main_axis < 0):
|
||||
main_axis += 3
|
||||
|
||||
#ifdef IGNORE_BEHIND_RAY
|
||||
depth_max = depth_get(local_bvmax, ray_origin_local, ray_direction_local)
|
||||
if (depth_max < sctx.depth_range[0]):
|
||||
return False
|
||||
#endif
|
||||
|
||||
if (rtmin <= rtmax):
|
||||
# if rtmin < rtmax, ray intersect `AABB` #
|
||||
return True
|
||||
|
||||
if (ray_direction_local[main_axis] < 0.0):
|
||||
va[main_axis] = local_bvmax[main_axis]
|
||||
vb[main_axis] = local_bvmin[main_axis]
|
||||
|
||||
else:
|
||||
va[main_axis] = local_bvmin[main_axis]
|
||||
vb[main_axis] = local_bvmax[main_axis]
|
||||
|
||||
win_half = sctx.winsize * 0.5
|
||||
|
||||
scale = abs(local_bvmax[main_axis] - local_bvmin[main_axis])
|
||||
|
||||
va2d = Vector((
|
||||
(MVP[0].xyz.dot(va) + MVP[0][3]),
|
||||
(MVP[1].xyz.dot(va) + MVP[1][3]),
|
||||
))
|
||||
|
||||
vb2d = Vector((
|
||||
(va2d[0] + MVP[0][main_axis] * scale),
|
||||
(va2d[1] + MVP[1][main_axis] * scale),
|
||||
))
|
||||
|
||||
depth_a = MVP[3].xyz.dot(va) + MVP[3][3]
|
||||
depth_b = depth_a + MVP[3][main_axis] * scale
|
||||
|
||||
va2d /= depth_a
|
||||
vb2d /= depth_b
|
||||
|
||||
va2d[0] = (va2d[0] + 1.0) * win_half[0]
|
||||
va2d[1] = (va2d[1] + 1.0) * win_half[1]
|
||||
vb2d[0] = (vb2d[0] + 1.0) * win_half[0]
|
||||
vb2d[1] = (vb2d[1] + 1.0) * win_half[1]
|
||||
|
||||
p, fac = intersect_point_line(sctx.mval, va2d, vb2d)
|
||||
if fac < 0.0:
|
||||
return (sctx.mval - va2d).length_squared < sctx._dist_px_sq
|
||||
elif fac > 1.0:
|
||||
return (sctx.mval - vb2d).length_squared < sctx._dist_px_sq
|
||||
else:
|
||||
return (sctx.mval - p).length_squared < sctx._dist_px_sq
|
||||
|
||||
|
||||
def intersect_ray_segment_fac(v0, v1, ray_direction, ray_origin):
|
||||
a = v1 - v0
|
||||
t = v0 - ray_origin
|
||||
n = a.cross(ray_direction)
|
||||
nlen = n.length_squared
|
||||
|
||||
# if (nlen == 0.0f) the lines are parallel, has no nearest point, only distance squared.*/
|
||||
if nlen == 0.0:
|
||||
# Calculate the distance to the nearest point to origin then #
|
||||
return a.dot(ray_direction) < 0
|
||||
else:
|
||||
c = n - t
|
||||
cray = c.cross(ray_direction)
|
||||
return cray.dot(n) / nlen
|
||||
|
||||
|
|
@ -0,0 +1,85 @@
|
|||
# ##### BEGIN GPL LICENSE BLOCK #####
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or
|
||||
# modify it under the terms of the GNU General Public License
|
||||
# as published by the Free Software Foundation; either version 3
|
||||
# of the License, or (at your option) any later version.
|
||||
#
|
||||
# This program is distributed in the hope that it will be useful,
|
||||
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
# GNU General Public License for more details.
|
||||
#
|
||||
# You should have received a copy of the GNU General Public License
|
||||
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
#
|
||||
# ##### END GPL LICENSE BLOCK #####
|
||||
|
||||
|
||||
import bgl
|
||||
|
||||
def check_shaderError(shader, flag, isProgram, errorMessage):
|
||||
success = bgl.Buffer(bgl.GL_INT, 1)
|
||||
|
||||
if isProgram:
|
||||
bgl.glGetProgramiv(shader, flag, success)
|
||||
else:
|
||||
bgl.glGetShaderiv(shader, flag, success)
|
||||
|
||||
if success[0] == bgl.GL_FALSE:
|
||||
import numpy as np
|
||||
from .bgl_ext import VoidBufValue
|
||||
|
||||
offset = VoidBufValue(None)
|
||||
error = bgl.Buffer(bgl.GL_BYTE, 1024)
|
||||
if isProgram:
|
||||
bgl.glGetProgramInfoLog(shader, 1024, offset.buf, error)
|
||||
print(errorMessage, np.bytes_(error).decode("utf-8"))
|
||||
else:
|
||||
bgl.glGetShaderInfoLog(shader, 1024, offset.buf, error)
|
||||
print(errorMessage, np.bytes_(error).decode("utf-8"))
|
||||
|
||||
del offset
|
||||
raise #RuntimeError(errorMessage, bgl.glGetShaderInfoLog(shader))
|
||||
|
||||
|
||||
def create_shader(source, shaderType):
|
||||
shader = bgl.glCreateShader(shaderType)
|
||||
|
||||
if shader == 0:
|
||||
raise RuntimeError("Error: Shader creation failed!")
|
||||
|
||||
bgl.glShaderSource(shader, source)
|
||||
bgl.glCompileShader(shader)
|
||||
|
||||
check_shaderError(shader, bgl.GL_COMPILE_STATUS, False, "Error: Shader compilation failed:")
|
||||
|
||||
return shader
|
||||
|
||||
|
||||
class Shader():
|
||||
def __init__(self, vertexcode, geomcode, fragcode):
|
||||
self.program = bgl.glCreateProgram()
|
||||
self.shaders = []
|
||||
|
||||
if vertexcode:
|
||||
self.shaders.append(create_shader(vertexcode, bgl.GL_VERTEX_SHADER))
|
||||
if geomcode:
|
||||
self.shaders.append(create_shader(geomcode, bgl.GL_GEOMETRY_SHADER))
|
||||
if fragcode:
|
||||
self.shaders.append(create_shader(fragcode, bgl.GL_FRAGMENT_SHADER))
|
||||
|
||||
for shad in self.shaders:
|
||||
bgl.glAttachShader(self.program, shad)
|
||||
|
||||
bgl.glLinkProgram(self.program)
|
||||
check_shaderError(self.program, bgl.GL_LINK_STATUS, True, "Error: Program linking failed:")
|
||||
bgl.glValidateProgram(self.program)
|
||||
check_shaderError(self.program, bgl.GL_VALIDATE_STATUS, True, "Error: Program is invalid:")
|
||||
|
||||
def __del__(self):
|
||||
for shad in self.shaders:
|
||||
bgl.glDetachShader(self.program, shad)
|
||||
bgl.glDeleteShader(shad)
|
||||
bgl.glDeleteProgram(self.program)
|
||||
print('shader_del')
|
||||
Loading…
Reference in New Issue