[Bf-blender-cvs] [9e2ebec] master: Add convinient access to full bitangent for loops (some export formats like FBX expect full bitangents, better to compute them in C than in python...)
Bastien Montagne
noreply at git.blender.org
Fri Jan 24 17:50:22 CET 2014
Commit: 9e2ebecb21d949aa503a9bd8c881a7fcf1175d1a
Author: Bastien Montagne
Date: Fri Jan 24 17:49:29 2014 +0100
https://developer.blender.org/rB9e2ebecb21d949aa503a9bd8c881a7fcf1175d1a
Add convinient access to full bitangent for loops (some export formats like FBX expect full bitangents, better to compute them in C than in python...)
===================================================================
M source/blender/makesrna/intern/rna_mesh.c
===================================================================
diff --git a/source/blender/makesrna/intern/rna_mesh.c b/source/blender/makesrna/intern/rna_mesh.c
index cf634f9..6e1b39e 100644
--- a/source/blender/makesrna/intern/rna_mesh.c
+++ b/source/blender/makesrna/intern/rna_mesh.c
@@ -361,6 +361,22 @@ static float rna_MeshLoop_bitangent_sign_get(PointerRNA *ptr)
return (vec) ? (*vec)[3] : 0.0f;
}
+static void rna_MeshLoop_bitangent_get(PointerRNA *ptr, float *values)
+{
+ Mesh *me = rna_mesh(ptr);
+ MLoop *ml = (MLoop *)ptr->data;
+ const float (*nor)[3] = CustomData_get(&me->ldata, (int)(ml - me->mloop), CD_NORMAL);
+ const float (*vec)[4] = CustomData_get(&me->ldata, (int)(ml - me->mloop), CD_MLOOPTANGENT);
+
+ if (nor && vec) {
+ cross_v3_v3v3(values, (const float *)nor, (const float *)vec);
+ mul_v3_fl(values, (*vec)[3]);
+ }
+ else {
+ zero_v3(values);
+ }
+}
+
static void rna_MeshPolygon_normal_get(PointerRNA *ptr, float *values)
{
Mesh *me = rna_mesh(ptr);
@@ -1913,6 +1929,15 @@ static void rna_def_mloop(BlenderRNA *brna)
RNA_def_property_ui_text(prop, "Bitangent Sign",
"Sign of the bitangent vector of this vertex for this polygon (must be computed "
"beforehand using calc_tangents, bitangent = bitangent_sign * cross(normal, tangent))");
+
+ prop = RNA_def_property(srna, "bitangent", PROP_FLOAT, PROP_DIRECTION);
+ RNA_def_property_array(prop, 3);
+ RNA_def_property_range(prop, -1.0f, 1.0f);
+ RNA_def_property_clear_flag(prop, PROP_EDITABLE);
+ RNA_def_property_float_funcs(prop, "rna_MeshLoop_bitangent_get", NULL, NULL);
+ RNA_def_property_ui_text(prop, "Bitangent",
+ "Bitangent vector of this vertex for this polygon (must be computed beforehand using "
+ "calc_tangents, *use it only if really needed*, slower access than bitangent_sign)");
}
static void rna_def_mpolygon(BlenderRNA *brna)
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