diff options
Diffstat (limited to 'source/blender/gpu/intern/gpu_immediate_util.c')
-rw-r--r-- | source/blender/gpu/intern/gpu_immediate_util.c | 29 |
1 files changed, 29 insertions, 0 deletions
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(); +} |