Build Modifier - Add "Reversed" Option

This commit introduces the ability to make the Build Modifier operate in reverse,
essentially allowing it to be used as a "deconstruction" effect.

(See D219 for more details about use cases for this)

1 files changed, 10 insertions, 1 deletions

diff --git a/source/blender/makesdna/DNA_modifier_types.h b/source/blender/makesdna/DNA_modifier_types.h
index 6756a18e382..06e75ca62de 100644
--- a/source/blender/makesdna/DNA_modifier_types.h
+++ b/source/blender/makesdna/DNA_modifier_types.h
@@ -167,9 +167,18 @@ typedef struct BuildModifierData {
 	ModifierData modifier;
 
 	float start, length;
-	int randomize, seed;
+	short flag;
+	
+	short randomize;      /* (bool) whether order of vertices is randomized - legacy files (for readfile conversion) */
+	int seed;             /* (int) random seed */
 } BuildModifierData;
 
+/* Build Modifier -> flag */
+enum {
+	MOD_BUILD_FLAG_RANDOMIZE = (1 << 0),  /* order of vertices is randomized */
+	MOD_BUILD_FLAG_REVERSE   = (1 << 1),  /* frame range is reversed, resulting in a deconstruction effect */
+};
+
 /* Mask Modifier */
 typedef struct MaskModifierData {
 	ModifierData modifier;