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The ctrl+click extrude now calculates a rotation, so you can do wild quick

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modeling!
It detects the rotation based on the average of all half-selected edges and
the extrude vector. The first rotation might go wrong on extruding parts
of very irregular shapes, but in general it does it fine. Of course, single
vertex clicking or entire shape clicking doesn't rotate.
This commit is contained in:
Ton Roosendaal 2005-10-23 19:16:37 +00:00
parent 745fc2f9d0
commit 20b23e3b5e
1 changed files with 45 additions and 5 deletions
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50
source/blender/src/editmesh_add.c
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@ -155,23 +155,63 @@ void add_click_mesh(void)
/* call extrude? */ /* call extrude? */
if(done) { if(done) {
float vec[3]; EditEdge *eed;
float vec[3], cent[3], mat[3][3];
float nor[3]= {0.0, 0.0, 0.0}; float nor[3]= {0.0, 0.0, 0.0};
/* check for edges that are half selected, use for rotation */
done= 0;
for(eed= em->edges.first; eed; eed= eed->next) {
if( (eed->v1->f & SELECT)+(eed->v2->f & SELECT) == SELECT ) {
if(eed->v1->f & SELECT) VecSubf(vec, eed->v1->co, eed->v2->co);
else VecSubf(vec, eed->v2->co, eed->v1->co);
VecAddf(nor, nor, vec);
done= 1;
}
}
if(done) Normalise(nor);
/* centre */ /* centre */
VecAddf(min, min, max); VecAddf(cent, min, max);
VecMulf(min, 0.5f); VecMulf(cent, 0.5f);
VECCOPY(vec, min); VECCOPY(min, cent);
Mat4MulVecfl(G.obedit->obmat, min); // view space Mat4MulVecfl(G.obedit->obmat, min); // view space
get_view_aligned_coordinate(min); get_view_aligned_coordinate(min);
Mat4Invert(G.obedit->imat, G.obedit->obmat); Mat4Invert(G.obedit->imat, G.obedit->obmat);
Mat4MulVecfl(G.obedit->imat, min); // back in object space Mat4MulVecfl(G.obedit->imat, min); // back in object space
VecSubf(min, min, vec); VecSubf(min, min, cent);
/* calculate rotation */
Mat3One(mat);
if(done) {
float dot;
VECCOPY(vec, min);
Normalise(vec);
dot= INPR(vec, nor);
if( fabs(dot)<0.999) {
float cross[3], si, q1[4];
Crossf(cross, nor, vec);
Normalise(cross);
dot= 0.5f*saacos(dot);
si= (float)sin(dot);
q1[0]= (float)cos(dot);
q1[1]= cross[0]*si;
q1[2]= cross[1]*si;
q1[3]= cross[2]*si;
QuatToMat3(q1, mat);
}
}
extrudeflag(SELECT, nor); extrudeflag(SELECT, nor);
rotateflag(SELECT, cent, mat);
translateflag(SELECT, min); translateflag(SELECT, min);
recalc_editnormals(); recalc_editnormals();
} }
else { else {