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Update template for changes in ray-cast

This commit is contained in:
Campbell Barton 2015-12-02 19:18:30 +11:00
parent 08fb55eea2
commit 90b83a806a
1 changed files with 8 additions and 7 deletions
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15
release/scripts/templates_py/operator_modal_view3d_raycast.py
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@ -2,7 +2,7 @@ import bpy
from bpy_extras import view3d_utils
def main(context, event, ray_max=1000.0):
def main(context, event):
"""Run this function on left mouse, execute the ray cast"""
# get the context arguments
scene = context.scene
@ -14,7 +14,7 @@ def main(context, event, ray_max=1000.0):
view_vector = view3d_utils.region_2d_to_vector_3d(region, rv3d, coord)
ray_origin = view3d_utils.region_2d_to_origin_3d(region, rv3d, coord)
ray_target = ray_origin + (view_vector * ray_max)
ray_target = ray_origin + view_vector
def visible_objects_and_duplis():
"""Loop over (object, matrix) pairs (mesh only)"""
@ -39,17 +39,18 @@ def main(context, event, ray_max=1000.0):
matrix_inv = matrix.inverted()
ray_origin_obj = matrix_inv * ray_origin
ray_target_obj = matrix_inv * ray_target
ray_direction_obj = ray_target_obj - ray_origin_obj
# cast the ray
hit, normal, face_index = obj.ray_cast(ray_origin_obj, ray_target_obj)
success, location, normal, face_index = obj.ray_cast(ray_origin_obj, ray_direction_obj)
if face_index != -1:
return hit, normal, face_index
if success:
return location, normal, face_index
else:
return None, None, None
# cast rays and find the closest object
best_length_squared = ray_max * ray_max
best_length_squared = -1.0
best_obj = None
for obj, matrix in visible_objects_and_duplis():
@ -59,7 +60,7 @@ def main(context, event, ray_max=1000.0):
hit_world = matrix * hit
scene.cursor_location = hit_world
length_squared = (hit_world - ray_origin).length_squared
if length_squared < best_length_squared:
if best_obj is None or length_squared < best_length_squared:
best_length_squared = length_squared
best_obj = obj