Commit: 1e13733b44ffd205c2443daeac567cb3853a9cb0
Author: Phil Gosch
Date: Tue Jun 21 15:07:15 2016 +0200
Branches: soc-2016-uv_tools
https://developer.blender.org/rB1e13733b44ffd205c2443daeac567cb3853a9cb0
Implemented a function to compute the area used by UV charts
This will be handy when calculating the used/wasted space during packing
===================================================================
M source/blender/editors/uvedit/uvedit_parametrizer.c
===================================================================
diff --git a/source/blender/editors/uvedit/uvedit_parametrizer.c
b/source/blender/editors/uvedit/uvedit_parametrizer.c
index 5e19f84..53652b8 100644
--- a/source/blender/editors/uvedit/uvedit_parametrizer.c
+++ b/source/blender/editors/uvedit/uvedit_parametrizer.c
@@ -425,6 +425,24 @@ static float p_face_uv_area_signed(PFace *f)
((v3->uv[0] - v1->uv[0]) * (v2->uv[1] - v1->uv[1])));
}
+/* returns the sum of the areas of all charts */
+static float p_face_uv_area_combined(ParamHandle *handle)
+{
+ PHandle *phandle = (PHandle *)handle;
+ PChart *chart;
+ PFace *f;
+ float used_area = 0.0f;
+ int i;
+
+ for (i = 0; i < phandle->ncharts; i++) {
+ for (f = phandle->charts[i]->faces; f; f = f->nextlink) {
+ used_area += fabsf(p_face_uv_area_signed(f));
+ }
+ }
+
+ return used_area;
+}
+
static float p_edge_length(PEdge *e)
{
PVert *v1 = e->vert, *v2 = e->next->vert;
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