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Geometry Nodes: Separate grid primitive X and Y size 

Since you can already specify a separate size for X and Y with the
grid node, it makes sense to be able to specify the size separately
for each axis also.

This also avoids some awkward math with a Transform node afterwards
when you want a specific size for each direction.

Versioning (except for animation and drivers) is handled in this commit.

Differential Revision: https://developer.blender.org/D10834
This commit is contained in:
Hans Goudey 2021-04-02 14:35:48 -05:00
parent e0a07700bf
commit 46d75052eb
3 changed files with 76 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
source/blender/blenkernel/BKE_blender_version.h
View File

@ -39,7 +39,7 @@ extern "C" {
/* Blender file format version. */
#define BLENDER_FILE_VERSION BLENDER_VERSION
#define BLENDER_FILE_SUBVERSION 15
#define BLENDER_FILE_SUBVERSION 16
/* Minimum Blender version that supports reading file written with the current
* version. Older Blender versions will test this and show a warning if the file

58
source/blender/blenloader/intern/versioning_290.c
View File

@ -379,6 +379,37 @@ static void seq_update_meta_disp_range(Editing *ed)
}
}
static void version_node_socket_duplicate(bNodeTree *ntree,
const int node_type,
const char *old_name,
const char *new_name)
{
/* Duplicate a link going into the original socket. */
LISTBASE_FOREACH_MUTABLE (bNodeLink *, link, &ntree->links) {
if (link->tonode->type == node_type) {
bNode *node = link->tonode;
bNodeSocket *dest_socket = nodeFindSocket(node, SOCK_IN, new_name);
BLI_assert(dest_socket);
if (STREQ(link->tosock->name, old_name)) {
nodeAddLink(ntree, link->fromnode, link->fromsock, node, dest_socket);
}
}
}
/* Duplicate the default value from the old socket and assign it to the new socket. */
LISTBASE_FOREACH (bNode *, node, &ntree->nodes) {
if (node->type == node_type) {
bNodeSocket *source_socket = nodeFindSocket(node, SOCK_IN, old_name);
bNodeSocket *dest_socket = nodeFindSocket(node, SOCK_IN, new_name);
BLI_assert(source_socket && dest_socket);
if (dest_socket->default_value) {
MEM_freeN(dest_socket->default_value);
}
dest_socket->default_value = MEM_dupallocN(source_socket->default_value);
}
}
}
void do_versions_after_linking_290(Main *bmain, ReportList *UNUSED(reports))
{
if (!MAIN_VERSION_ATLEAST(bmain, 290, 1)) {
@ -641,6 +672,20 @@ void do_versions_after_linking_290(Main *bmain, ReportList *UNUSED(reports))
}
}
if (!MAIN_VERSION_ATLEAST(bmain, 293, 16)) {
LISTBASE_FOREACH (Scene *, scene, &bmain->scenes) {
seq_update_meta_disp_range(SEQ_editing_get(scene, false));
}
/* Add a separate socket for Grid node X and Y size. */
FOREACH_NODETREE_BEGIN (bmain, ntree, id) {
if (ntree->type == NTREE_GEOMETRY) {
version_node_socket_duplicate(ntree, GEO_NODE_MESH_PRIMITIVE_GRID, "Size X", "Size Y");
}
FOREACH_NODETREE_END;
}
}
/**
* Versioning code until next subversion bump goes here.
*
@ -653,10 +698,6 @@ void do_versions_after_linking_290(Main *bmain, ReportList *UNUSED(reports))
*/
{
/* Keep this block, even when empty. */
LISTBASE_FOREACH (Scene *, scene, &bmain->scenes) {
seq_update_meta_disp_range(SEQ_editing_get(scene, false));
}
}
}
@ -1939,6 +1980,15 @@ void blo_do_versions_290(FileData *fd, Library *UNUSED(lib), Main *bmain)
}
}
if (!MAIN_VERSION_ATLEAST(bmain, 293, 16)) {
FOREACH_NODETREE_BEGIN (bmain, ntree, id) {
if (ntree->type == NTREE_GEOMETRY) {
version_node_socket_name(ntree, GEO_NODE_MESH_PRIMITIVE_GRID, "Size", "Size X");
}
FOREACH_NODETREE_END;
}
}
/**
* Versioning code until next subversion bump goes here.
*

33
source/blender/nodes/geometry/nodes/node_geo_mesh_primitive_grid.cc
View File

@ -28,7 +28,8 @@
#include "node_geometry_util.hh"
static bNodeSocketTemplate geo_node_mesh_primitive_grid_in[] = {
{SOCK_FLOAT, N_("Size"), 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, FLT_MAX, PROP_DISTANCE},
{SOCK_FLOAT, N_("Size X"), 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, FLT_MAX, PROP_DISTANCE},
{SOCK_FLOAT, N_("Size Y"), 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, FLT_MAX, PROP_DISTANCE},
{SOCK_INT, N_("Vertices X"), 3, 0.0f, 0.0f, 0.0f, 2, 1000},
{SOCK_INT, N_("Vertices Y"), 3, 0.0f, 0.0f, 0.0f, 2, 1000},
{-1, ""},
@ -41,7 +42,8 @@ static bNodeSocketTemplate geo_node_mesh_primitive_grid_out[] = {
namespace blender::nodes {
static void calculate_uvs(Mesh *mesh, Span<MVert> verts, Span<MLoop> loops, const float size)
static void calculate_uvs(
Mesh *mesh, Span<MVert> verts, Span<MLoop> loops, const float size_x, const float size_y)
{
MeshComponent mesh_component;
mesh_component.replace(mesh, GeometryOwnershipType::Editable);
@ -49,17 +51,23 @@ static void calculate_uvs(Mesh *mesh, Span<MVert> verts, Span<MLoop> loops, cons
"uv", ATTR_DOMAIN_CORNER, CD_PROP_FLOAT2, nullptr);
MutableSpan<float2> uvs = uv_attribute->get_span_for_write_only<float2>();
const float dx = (size_x == 0.0f) ? 0.0f : 1.0f / size_x;
const float dy = (size_y == 0.0f) ? 0.0f : 1.0f / size_y;
for (const int i : loops.index_range()) {
const float3 &co = verts[loops[i].v].co;
uvs[i].x = (co.x + (size * 0.5)) / size;
uvs[i].y = (co.y + (size * 0.5)) / size;
uvs[i].x = (co.x + size_x * 0.5f) * dx;
uvs[i].y = (co.y + size_y * 0.5f) * dy;
}
uv_attribute.apply_span_and_save();
}
static Mesh *create_grid_mesh(const int verts_x, const int verts_y, const float size)
static Mesh *create_grid_mesh(const int verts_x,
const int verts_y,
const float size_x,
const float size_y)
{
BLI_assert(verts_x > 1 && verts_y > 1);
const int edges_x = verts_x - 1;
const int edges_y = verts_y - 1;
Mesh *mesh = BKE_mesh_new_nomain(verts_x * verts_y,
@ -73,11 +81,11 @@ static Mesh *create_grid_mesh(const int verts_x, const int verts_y, const float
MutableSpan<MPoly> polys{mesh->mpoly, mesh->totpoly};
{
const float dx = size / edges_x;
const float dy = size / edges_y;
float x = -size * 0.5;
const float dx = size_x / edges_x;
const float dy = size_y / edges_y;
float x = -size_x * 0.5;
for (const int x_index : IndexRange(verts_x)) {
float y = -size * 0.5;
float y = -size_y * 0.5;
for (const int y_index : IndexRange(verts_y)) {
const int vert_index = x_index * verts_y + y_index;
verts[vert_index].co[0] = x;
@ -144,14 +152,15 @@ static Mesh *create_grid_mesh(const int verts_x, const int verts_y, const float
}
}
calculate_uvs(mesh, verts, loops, size);
calculate_uvs(mesh, verts, loops, size_x, size_y);
return mesh;
}
static void geo_node_mesh_primitive_grid_exec(GeoNodeExecParams params)
{
const float size = params.extract_input<float>("Size");
const float size_x = params.extract_input<float>("Size X");
const float size_y = params.extract_input<float>("Size Y");
const int verts_x = params.extract_input<int>("Vertices X");
const int verts_y = params.extract_input<int>("Vertices Y");
if (verts_x < 2 || verts_y < 2) {
@ -159,7 +168,7 @@ static void geo_node_mesh_primitive_grid_exec(GeoNodeExecParams params)
return;
}
Mesh *mesh = create_grid_mesh(verts_x, verts_y, size);
Mesh *mesh = create_grid_mesh(verts_x, verts_y, size_x, size_y);
BLI_assert(BKE_mesh_is_valid(mesh));
params.set_output("Geometry", GeometrySet::create_with_mesh(mesh));