More flexible size options for particle billboards. This adds scale factors for width and height of billboards, relative to the particle size. It's useful when the particle size is primarily used for collision and the like, so the billboard appearance can be adjusted independently. Also allows non-square billboards.

In addition the billboards can be scaled by the particle velocity with optional head and tail factors (similar to line drawing options). This allows for pseudo-motionblur effects.

1 files changed, 2 insertions, 1 deletions

diff --git a/source/blender/blenkernel/BKE_particle.h b/source/blender/blenkernel/BKE_particle.h
index feeab98ad78..5b565223ece 100644
--- a/source/blender/blenkernel/BKE_particle.h
+++ b/source/blender/blenkernel/BKE_particle.h
@@ -147,7 +147,8 @@ typedef struct ParticleBillboardData
 	struct Object *ob;
 	float vec[3], vel[3];
 	float offset[2];
-	float size, tilt, random, time;
+	float size[2];
+	float tilt, random, time;
 	int uv[3];
 	int lock, num;
 	int totnum;