griefith/test
1
0
Fork 0
Code Issues Pull Requests Actions 1 Packages Projects Releases Wiki Activity

Bugfix #3237

Browse Source 
Selecting Edges in "Cut Away View" (ALT+B) did not work yet for wire view.
Solved it by calculating the closest coordinate for mouse to edge, and
check for that position if it's visible or not.
This commit is contained in:
Ton Roosendaal
2005-11-05 18:23:26 +00:00
parent 28c487a77c
commit bb1471878d
1 changed files with 33 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

35
source/blender/src/editmesh_mods.c
View File

@@ -540,6 +540,21 @@ static EditVert *findnearestvert(short *dist, short sel)
}
}
/* returns labda for closest distance v1 to line-piece v2-v3 */
static float labda_PdistVL2Dfl( float *v1, float *v2, float *v3)
{
float rc[2], len;
rc[0]= v3[0]-v2[0];
rc[1]= v3[1]-v2[1];
len= rc[0]*rc[0]+ rc[1]*rc[1];
if(len==0.0f)
return 0.0f;
return ( rc[0]*(v1[0]-v2[0]) + rc[1]*(v1[1]-v2[1]) )/len;
}
/* note; uses G.vd, so needs active 3d window */
static void findnearestedge__doClosest(void *userData, EditEdge *eed, int x0, int y0, int x1, int y1, int index)
{
struct { float mval[2]; short dist; EditEdge *closest; } *data = userData;
@@ -555,8 +570,24 @@ static void findnearestedge__doClosest(void *userData, EditEdge *eed, int x0, in
if(eed->f & SELECT) distance+=5;
if(distance < data->dist) {
data->dist = distance;
data->closest = eed;
if(G.vd->flag & V3D_CLIPPING) {
float labda= labda_PdistVL2Dfl(data->mval, v1, v2);
float vec[3];
vec[0]= eed->v1->co[0] + labda*(eed->v2->co[0] - eed->v1->co[0]);
vec[1]= eed->v1->co[1] + labda*(eed->v2->co[1] - eed->v1->co[1]);
vec[2]= eed->v1->co[2] + labda*(eed->v2->co[2] - eed->v1->co[2]);
Mat4MulVecfl(G.obedit->obmat, vec);
if(view3d_test_clipping(G.vd, vec)==0) {
data->dist = distance;
data->closest = eed;
}
}
else {
data->dist = distance;
data->closest = eed;
}
}
}
EditEdge *findnearestedge(short *dist)