[Bf-blender-cvs] [77df32548b9] master: Revert "Adjust snap source drawing when adding multiple snap points"

[Germano Cavalcante]

Commit: 77df32548b9f377a834b54d0b740a6a51bb2f0a5
Author: Germano Cavalcante
Date:   Wed Nov 17 14:54:14 2021 -0300
Branches: master
https://developer.blender.org/rB77df32548b9f377a834b54d0b740a6a51bb2f0a5

Revert "Adjust snap source drawing when adding multiple snap points"

This reverts commit cb3ba68ec4470a170905a2dc9ea64b8fa1f8ace3.

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

M	source/blender/editors/space_view3d/view3d_cursor_snap.c
M	source/blender/editors/transform/transform_snap.c
M	source/blender/gpu/GPU_immediate_util.h
M	source/blender/gpu/intern/gpu_immediate_util.c

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

diff --git a/source/blender/editors/space_view3d/view3d_cursor_snap.c b/source/blender/editors/space_view3d/view3d_cursor_snap.c
index ac80a70011a..961b0bd6862 100644
--- a/source/blender/editors/space_view3d/view3d_cursor_snap.c
+++ b/source/blender/editors/space_view3d/view3d_cursor_snap.c
@@ -414,37 +414,13 @@ void ED_view3d_cursor_snap_draw_util(RegionView3D *rv3d,
   }
 
   if (loc_prev) {
-    /* Draw an "X" indicating where the previous snap point is.
-     * This is useful for indicating perpendicular snap. */
-
-    /* v1, v2, v3 and v4 indicate the coordinates of the ends of the "X". */
-    float vx[3], vy[3], v1[3], v2[3], v3[3], v4[4];
-
     /* Multiply by 0.75f so that the final size of the "X" is close to that of
      * the circle.
      * (A closer value is 0.7071f, but we don't need to be exact here). */
     float x_size = 0.75f * radius * ED_view3d_pixel_size(rv3d, loc_prev);
 
-    mul_v3_v3fl(vx, view_inv[0], x_size);
-    mul_v3_v3fl(vy, view_inv[1], x_size);
-
-    add_v3_v3v3(v1, vx, vy);
-    sub_v3_v3v3(v2, vx, vy);
-    negate_v3_v3(v3, v1);
-    negate_v3_v3(v4, v2);
-
-    add_v3_v3(v1, loc_prev);
-    add_v3_v3(v2, loc_prev);
-    add_v3_v3(v3, loc_prev);
-    add_v3_v3(v4, loc_prev);
-
     immUniformColor4ubv(color_line);
-    immBegin(GPU_PRIM_LINES, 4);
-    immVertex3fv(pos, v3);
-    immVertex3fv(pos, v1);
-    immVertex3fv(pos, v4);
-    immVertex3fv(pos, v2);
-    immEnd();
+    imm_drawX(loc_prev, x_size, view_inv, pos);
 
     if (loc_curr && (snap_elem_type & SCE_SNAP_MODE_EDGE_PERPENDICULAR)) {
       /* Dashed line. */
diff --git a/source/blender/editors/transform/transform_snap.c b/source/blender/editors/transform/transform_snap.c
index 8ed0a1f2ea8..f52061f8910 100644
--- a/source/blender/editors/transform/transform_snap.c
+++ b/source/blender/editors/transform/transform_snap.c
@@ -237,44 +237,12 @@ void drawSnapping(const struct bContext *C, TransInfo *t)
         }
 
         if (t->modifiers & MOD_EDIT_SNAP_SOURCE) {
-          /* Indicate the new snap source position. */
-
           float snap_point[3];
           getSnapPoint(t, snap_point);
 
-          float vx[3], vy[3], v[3];
-          float size_tmp = ED_view3d_pixel_size(rv3d, snap_point) * size;
-          float size_fac = 0.5f;
-
-          mul_v3_v3fl(vx, view_inv[0], size_tmp);
-          mul_v3_v3fl(vy, view_inv[1], size_tmp);
-
           immUniformColor4ubv(col);
-
-          imm_drawcircball(snap_point, size_tmp, view_inv, pos);
-
-          immBegin(GPU_PRIM_LINES, 8);
-          add_v3_v3v3(v, snap_point, vx);
-          immVertex3fv(pos, v);
-          madd_v3_v3fl(v, vx, size_fac);
-          immVertex3fv(pos, v);
-
-          sub_v3_v3v3(v, snap_point, vx);
-          immVertex3fv(pos, v);
-          madd_v3_v3fl(v, vx, -size_fac);
-          immVertex3fv(pos, v);
-
-          add_v3_v3v3(v, snap_point, vy);
-          immVertex3fv(pos, v);
-          madd_v3_v3fl(v, vy, size_fac);
-          immVertex3fv(pos, v);
-
-          sub_v3_v3v3(v, snap_point, vy);
-          immVertex3fv(pos, v);
-          madd_v3_v3fl(v, vy, -size_fac);
-          immVertex3fv(pos, v);
-
-          immEnd();
+          imm_drawX(
+              snap_point, 0.75f * size * ED_view3d_pixel_size(rv3d, snap_point), view_inv, pos);
         }
 
         immUnbindProgram();
diff --git a/source/blender/gpu/GPU_immediate_util.h b/source/blender/gpu/GPU_immediate_util.h
index 047c3d3da00..5b14b139662 100644
--- a/source/blender/gpu/GPU_immediate_util.h
+++ b/source/blender/gpu/GPU_immediate_util.h
@@ -93,6 +93,8 @@ void imm_draw_cylinder_fill_3d(
     uint pos, float base, float top, float height, int slices, int stacks);
 
 void imm_drawcircball(const float cent[3], float rad, const float tmat[4][4], uint pos);
+void imm_drawX(const float cent[3], float size, const float tmat[4][4], uint pos);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/source/blender/gpu/intern/gpu_immediate_util.c b/source/blender/gpu/intern/gpu_immediate_util.c
index df18b89bd67..2dd23fa46ae 100644
--- a/source/blender/gpu/intern/gpu_immediate_util.c
+++ b/source/blender/gpu/intern/gpu_immediate_util.c
@@ -654,3 +654,32 @@ void imm_drawcircball(const float cent[3], float rad, const float tmat[4][4], ui
   }
   immEnd();
 }
+
+void imm_drawX(const float cent[3], float size, const float tmat[4][4], uint pos)
+{
+  /* Draw an "X" indicating where the previous snap point is.
+   * This is useful for indicating perpendicular snap. */
+
+  /* v1, v2, v3 and v4 indicate the coordinates of the ends of the "X". */
+  float vx[3], vy[3], v1[3], v2[3], v3[3], v4[4];
+
+  mul_v3_v3fl(vx, tmat[0], size);
+  mul_v3_v3fl(vy, tmat[1], size);
+
+  add_v3_v3v3(v1, vx, vy);
+  sub_v3_v3v3(v2, vx, vy);
+  negate_v3_v3(v3, v1);
+  negate_v3_v3(v4, v2);
+
+  add_v3_v3(v1, cent);
+  add_v3_v3(v2, cent);
+  add_v3_v3(v3, cent);
+  add_v3_v3(v4, cent);
+
+  immBegin(GPU_PRIM_LINES, 4);
+  immVertex3fv(pos, v3);
+  immVertex3fv(pos, v1);
+  immVertex3fv(pos, v4);
+  immVertex3fv(pos, v2);
+  immEnd();
+}