[Bf-blender-cvs] [56f794f] master: Cleanup: de-duplicate view3d clipping

[Campbell Barton]

Commit: 56f794fce60f6e3681b8445403d4826371b3b365
Author: Campbell Barton
Date:   Sat Mar 7 00:25:27 2015 +1100
Branches: master
https://developer.blender.org/rB56f794fce60f6e3681b8445403d4826371b3b365

Cleanup: de-duplicate view3d clipping

===================================================================

M	source/blender/editors/include/ED_view3d.h
M	source/blender/editors/space_view3d/view3d_edit.c
M	source/blender/editors/space_view3d/view3d_view.c

===================================================================

diff --git a/source/blender/editors/include/ED_view3d.h b/source/blender/editors/include/ED_view3d.h
index 5bf077b..30f8fb4 100644
--- a/source/blender/editors/include/ED_view3d.h
+++ b/source/blender/editors/include/ED_view3d.h
@@ -241,6 +241,7 @@ void ED_view3d_calc_camera_border_size(struct Scene *scene, struct ARegion *ar,
 bool ED_view3d_calc_render_border(struct Scene *scene, struct View3D *v3d,
                                   struct ARegion *ar, struct rcti *rect);
 
+void ED_view3d_clipping_calc_from_boundbox(float clip[6][4], const struct BoundBox *clipbb, const bool is_flip);
 void ED_view3d_clipping_calc(struct BoundBox *bb, float planes[4][4], struct bglMats *mats, const struct rcti *rect);
 void ED_view3d_clipping_local(struct RegionView3D *rv3d, float mat[4][4]);
 bool ED_view3d_clipping_test(struct RegionView3D *rv3d, const float co[3], const bool is_local);
diff --git a/source/blender/editors/space_view3d/view3d_edit.c b/source/blender/editors/space_view3d/view3d_edit.c
index 7169fa9..233a0bd 100644
--- a/source/blender/editors/space_view3d/view3d_edit.c
+++ b/source/blender/editors/space_view3d/view3d_edit.c
@@ -4429,20 +4429,6 @@ void VIEW3D_OT_background_image_remove(wmOperatorType *ot)
 
 /* ********************* set clipping operator ****************** */
 
-static void calc_clipping_plane(float clip[6][4], const BoundBox *clipbb, const bool is_flip)
-{
-	int val;
-
-	for (val = 0; val < 4; val++) {
-		normal_tri_v3(clip[val], clipbb->vec[val], clipbb->vec[val == 3 ? 0 : val + 1], clipbb->vec[val + 4]);
-		if (UNLIKELY(is_flip)) {
-			negate_v3(clip[val]);
-		}
-
-		clip[val][3] = -dot_v3v3(clip[val], clipbb->vec[val]);
-	}
-}
-
 static void calc_local_clipping(float clip_local[6][4], BoundBox *clipbb, float mat[4][4])
 {
 	BoundBox clipbb_local;
@@ -4455,7 +4441,7 @@ static void calc_local_clipping(float clip_local[6][4], BoundBox *clipbb, float
 		mul_v3_m4v3(clipbb_local.vec[i], imat, clipbb->vec[i]);
 	}
 
-	calc_clipping_plane(clip_local, &clipbb_local, is_negative_m4(mat));
+	ED_view3d_clipping_calc_from_boundbox(clip_local, &clipbb_local, is_negative_m4(mat));
 }
 
 void ED_view3d_clipping_local(RegionView3D *rv3d, float mat[4][4])
diff --git a/source/blender/editors/space_view3d/view3d_view.c b/source/blender/editors/space_view3d/view3d_view.c
index 5a3893f..76d9762 100644
--- a/source/blender/editors/space_view3d/view3d_view.c
+++ b/source/blender/editors/space_view3d/view3d_view.c
@@ -609,6 +609,20 @@ void VIEW3D_OT_object_as_camera(wmOperatorType *ot)
 
 /* ********************************** */
 
+void ED_view3d_clipping_calc_from_boundbox(float clip[4][4], const BoundBox *bb, const bool is_flip)
+{
+	int val;
+
+	for (val = 0; val < 4; val++) {
+		normal_tri_v3(clip[val], bb->vec[val], bb->vec[val == 3 ? 0 : val + 1], bb->vec[val + 4]);
+		if (UNLIKELY(is_flip)) {
+			negate_v3(clip[val]);
+		}
+
+		clip[val][3] = -dot_v3v3(clip[val], bb->vec[val]);
+	}
+}
+
 void ED_view3d_clipping_calc(BoundBox *bb, float planes[4][4], bglMats *mats, const rcti *rect)
 {
 	float modelview[4][4];
@@ -644,16 +658,7 @@ void ED_view3d_clipping_calc(BoundBox *bb, float planes[4][4], bglMats *mats, co
 		((float *)modelview)[a] = mats->modelview[a];
 	flip_sign = is_negative_m4(modelview);
 
-	/* then plane equations */
-	for (val = 0; val < 4; val++) {
-
-		normal_tri_v3(planes[val], bb->vec[val], bb->vec[val == 3 ? 0 : val + 1], bb->vec[val + 4]);
-
-		if (flip_sign)
-			negate_v3(planes[val]);
-
-		planes[val][3] = -dot_v3v3(planes[val], bb->vec[val]);
-	}
+	ED_view3d_clipping_calc_from_boundbox(planes, bb, flip_sign);
 }
 
 static bool view3d_boundbox_clip_m4(const BoundBox *bb, float persmatob[4][4])