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Bugfix: particle add brush in perspective mode would sometimes

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not add particles, view ray was wrong.
This commit is contained in:
Brecht Van Lommel 2007-12-17 11:20:51 +00:00
parent 317ad91349
commit b2a7619fe8
1 changed files with 13 additions and 11 deletions
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24
source/blender/src/editparticle.c
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@ -2121,7 +2121,7 @@ static void brush_add(Object *ob, ParticleSystem *psys, short *mval, short numbe
int i, k, n = 0, totpart = psys->totpart;
short dmx = 0, dmy = 0;
short mx = mval[0] - curarea->winx / 2, my = mval[1] - curarea->winy / 2;
float co1[3], co2[3], vec[4], min_d, imat[4][4], dx, dy;
float co1[3], co2[3], vec[4], min_d, imat[4][4];
float framestep, timestep = psys_get_timestep(psys->part);
short size = pset->brush[PE_BRUSH_ADD].size;
short size2 = size*size;
@ -2151,20 +2151,22 @@ static void brush_add(Object *ob, ParticleSystem *psys, short *mval, short numbe
/* create intersection coordinates in view Z direction at mouse coordinates */
/* Thanks to who ever wrote the "Mouse Location 3D Space" tutorial in "Blender 3D: Blending Into Python/Cookbook". */
if(G.vd->persp){
dx = G.vd->persmat[3][3] * (2.0f*(mx+dmx)/curarea->winx) - G.vd->persmat[3][0];
dy = G.vd->persmat[3][3] * (2.0f*(my+dmy)/curarea->winy) - G.vd->persmat[3][1];
vec[0]= (2.0f*(mx+dmx)/curarea->winx);
vec[1]= (2.0f*(my+dmy)/curarea->winy);
vec[2]= -1.0f;
vec[3]= 1.0f;
co2[0]=G.vd->persinv[0][0]*dx + G.vd->persinv[1][0]*dy;
co2[1]=G.vd->persinv[0][1]*dx + G.vd->persinv[1][1]*dy;
co2[2]=G.vd->persinv[0][2]*dx + G.vd->persinv[1][2]*dy;
Mat4MulVec4fl(G.vd->persinv, vec);
VecMulf(vec, 1.0f/vec[3]);
VECCOPY(co1,G.vd->viewinv[3]);
VECCOPY(co1, G.vd->viewinv[3]);
VECSUB(vec, vec, co1);
Normalize(vec);
VECSUB(vec,co2,co1)
VECADDFAC(co2,co1,vec,1000.0f);
VECADDFAC(co1, G.vd->viewinv[3], vec, G.vd->near);
VECADDFAC(co2, G.vd->viewinv[3], vec, G.vd->far);
}
else{
else {
vec[0] = 2.0f*(mx+dmx)/curarea->winx;
vec[1] = 2.0f*(my+dmy)/curarea->winy;
vec[2] = 0.0f;