Function msComputeBounds

mapprimitive.c:196–218

}

void msComputeBounds(shapeObj *shape)
{
  int i, j;
  if(shape->numlines <= 0) return;
  for(i=0;i<shape->numlines;i++) {
     if(shape->line[i].numpoints > 0) {
        shape->bounds.minx = shape->bounds.maxx = shape->line[i].point[0].x;
        shape->bounds.miny = shape->bounds.maxy = shape->line[i].point[0].y;
        break;
     }
  }
  if(i == shape->numlines)
     return; //no lines inside the shape contain any points 
    
  for( i=0; i<shape->numlines; i++ ) {
    for( j=0; j<shape->line[i].numpoints; j++ ) {
      shape->bounds.minx = MS_MIN(shape->bounds.minx, shape->line[i].point[j].x);
      shape->bounds.maxx = MS_MAX(shape->bounds.maxx, shape->line[i].point[j].x);
      shape->bounds.miny = MS_MIN(shape->bounds.miny, shape->line[i].point[j].y);
      shape->bounds.maxy = MS_MAX(shape->bounds.maxy, shape->line[i].point[j].y);
    }
  }
}

/* checks to see if ring r is an outer ring of shape */
int msIsOuterRing(shapeObj *shape, int r)