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New: Fake Polygons, or Face-polygons, or FGons nicked for now.

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Just select a bunch of faces (selection should be valid flat poly) and
press FKEY. Works in fact as selection-group optimizing. Nice in solid
drawmode!

Further some small additional fixes in the whole debugging process.
Found old error in loopselect for triangles, subdivision code, and
selection still.

NOTE: subdivide still works on vertex level only.
This commit is contained in:
Ton Roosendaal
2004-09-24 16:06:20 +00:00
parent f59503682d
commit 572b7c078d
8 changed files with 278 additions and 229 deletions
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125
source/blender/src/editmesh_add.c
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@@ -65,6 +65,7 @@
#include "BIF_editmesh.h"
#include "BIF_graphics.h"
#include "BIF_interface.h"
#include "BIF_mywindow.h"
#include "BIF_screen.h"
#include "BIF_space.h"
@@ -164,6 +165,128 @@ void addvert_mesh(void)
}
/* selected faces get hidden edges */
static void make_fgon(void)
{
EditMesh *em = G.editMesh;
EditFace *efa;
EditEdge *eed;
EditVert *eve;
float *nor=NULL, dot; // reference
int done=0, ret;
ret= pupmenu("FGon %t|Make|Clear");
if(ret<1) return;
if(ret==2) {
for(efa= em->faces.first; efa; efa= efa->next) {
if(efa->f & SELECT) {
efa->fgonf= 0;
efa->e1->h &= ~EM_FGON;
efa->e2->h &= ~EM_FGON;
efa->e3->h &= ~EM_FGON;
if(efa->e4) efa->e4->h &= ~EM_FGON;
}
}
allqueue(REDRAWVIEW3D, 0);
makeDispList(G.obedit);
BIF_undo_push("Clear FGon");
return;
}
/* tagging edges. rule is:
- edge used by exactly 2 selected faces
- no vertices allowed with only tagged edges (return)
- face normals should not differ too much
*/
for(eed= em->edges.first; eed; eed= eed->next) {
eed->f1= 0; // amount of selected
eed->f2= 0; // amount of unselected
}
for(efa= em->faces.first; efa; efa= efa->next) {
if(efa->f & SELECT) {
if(nor==NULL) nor= efa->n;
if(efa->e1->f1 < 3) efa->e1->f1++;
if(efa->e2->f1 < 3) efa->e2->f1++;
if(efa->e3->f1 < 3) efa->e3->f1++;
if(efa->e4 && efa->e4->f1 < 3) efa->e4->f1++;
}
else {
if(efa->e1->f2 < 3) efa->e1->f2++;
if(efa->e2->f2 < 3) efa->e2->f2++;
if(efa->e3->f2 < 3) efa->e3->f2++;
if(efa->e4 && efa->e4->f2 < 3) efa->e4->f2++;
}
}
// now eed->f1 becomes tagged edge
for(eed= em->edges.first; eed; eed= eed->next) {
if(eed->f1==2 && eed->f2==0) eed->f1= 1;
else eed->f1= 0;
}
// no vertices allowed with only tagged edges
for(eve= em->verts.first; eve; eve= eve->next) eve->f1= 0;
for(eed= em->edges.first; eed; eed= eed->next) {
if(eed->f1) {
eed->v1->f1 |= 1;
eed->v2->f1 |= 1;
}
else {
eed->v1->f1 |= 2;
eed->v2->f1 |= 2;
}
}
for(eve= em->verts.first; eve; eve= eve->next) {
if(eve->f1==1) break;
}
if(eve) {
error("Cannot make polygon with interior vertices");
return;
}
// check co-planar
if(nor==NULL) {
error("No faces selected to make FGon");
return;
}
for(efa= em->faces.first; efa; efa= efa->next) {
if(efa->f & SELECT) {
dot= nor[0]*efa->n[0]+nor[1]*efa->n[1]+nor[2]*efa->n[2];
if(dot<0.9 && dot > -0.9) break;
}
}
if(efa) {
error("Not a set of co-planar faces to make FGon");
return;
}
// and there we go
for(eed= em->edges.first; eed; eed= eed->next) {
if(eed->f1) {
eed->h |= EM_FGON;
done= 1;
}
}
if(done==0) {
error("Didn't find FGon to create");
}
else {
Mesh *me= G.obedit->data;
// signal to save edges with ngon flags
if(!me->medge)
me->medge= MEM_callocN(sizeof(MEdge), "fake mesh edge");
EM_fgon_flags(); // redo flags and indices for fgons
allqueue(REDRAWVIEW3D, 0);
makeDispList(G.obedit);
BIF_undo_push("Make FGon");
}
}
void addedgeface_mesh(void)
{
EditMesh *em = G.editMesh;
@@ -191,7 +314,7 @@ void addedgeface_mesh(void)
return;
}
else if(amount > 4) {
//make_fgon();
make_fgon();
return;
}
else if(amount<2) {