Waypoint_t *Waypoint_GetByVisibility(MathVector3f_t vOrigin)
{
Waypoint_t *wPoint;
trace_t tTrace;
for (wPoint = wWaypoints; wPoint->number < waypoint_count; wPoint++)
{
tTrace = Traceline(NULL,vOrigin,wPoint->position,0);
// Given point cannot be in the same place as the given origin.
if( Math_VectorCompare(tTrace.endpos,wPoint->position) &&
!Math_VectorCompare(vOrigin,wPoint->position))
return wPoint;
}
return NULL;
}
/* The mouse click did not hit the brush, so grab one or more side
planes for dragging
*/
void Brush_SideSelect(brush_t *b,vec3_t origin,vec3_t dir,bool shear)
{
face_t *f, *f2;
vec3_t p1, p2;
for(f = b->brush_faces; f; f = f->next)
{
Math_VectorCopy(origin,p1);
Math_VectorMA(origin,16384,dir,p2);
for (f2=b->brush_faces ; f2 ; f2=f2->next)
{
if (f2 == f)
continue;
Brush_ClipLineToFace(p1,p2,f2);
}
if(f2)
continue;
if(Math_VectorCompare(p1,origin))
continue;
if(Brush_ClipLineToFace(p1,p2,f))
continue;
Brush_SelectFaceForDragging (b, f, shear);
}
}
void Brush_MakeFacePlanes (brush_t *b)
{
face_t *f;
int j;
vec3_t t1, t2, t3;
for (f=b->brush_faces ; f ; f=f->next)
{
// convert to a vector / dist plane
for (j=0 ; j<3 ; j++)
{
t1[j] = f->planepts[0][j] - f->planepts[1][j];
t2[j] = f->planepts[2][j] - f->planepts[1][j];
t3[j] = f->planepts[1][j];
}
Math_CrossProduct(t1,t2,f->plane.normal);
if(Math_VectorCompare(f->plane.normal,vec3_origin))
printf("WARNING: brush plane with no normal!\n");
Math_VectorNormalize(f->plane.normal);
f->plane.dist = Math_DotProduct(t3,f->plane.normal);
}
}
