- self->cx = x;
- self->cy = y;
-}
-
-void gis_point_project(GisPoint *self, GisProjection *proj)
-{
- gluProject(self->x, self->y, self->z,
- proj->model, proj->proj, proj->view,
- &self->px, &self->py, &self->pz);
-}
-
-GisPoint *gis_point_ref(GisPoint *self)
-{
- self->refs++;
- return self;
-}
-
-void gis_point_unref(GisPoint *self)
-{
- self->refs--;
- if (self->refs <= 0)
- g_free(self);
-}
-
-
-/* GisTriangle */
-GisTriangle *gis_triangle_new(GisPoint *a, GisPoint *b, GisPoint *c, guint tex)
-{
- GisTriangle *self = g_new0(GisTriangle, 1);
- GIS_OBJECT(self)->type = GIS_TYPE_TRIANGLE;
- gis_point_set_xyz(&GIS_OBJECT(self)->center,
- (a->x + b->x + c->x)/3,
- (a->y + b->y + c->y)/3,
- (a->z + b->z + c->z)/3);
- self->verts[0] = gis_point_ref(a);
- self->verts[1] = gis_point_ref(b);
- self->verts[2] = gis_point_ref(c);
- self->tex = tex;
- return self;
-}
-
-void gis_triangle_free(GisTriangle *self)
-{
- gis_point_unref(self->verts[0]);
- gis_point_unref(self->verts[1]);
- gis_point_unref(self->verts[2]);
- g_free(self);
-}
-
-
-/* GisQuad */
-GisQuad *gis_quad_new(GisPoint *a, GisPoint *b, GisPoint *c, GisPoint *d, guint tex)
-{
- GisQuad *self = g_new0(GisQuad, 1);
- GIS_OBJECT(self)->type = GIS_TYPE_QUAD;
- gis_point_set_xyz(&GIS_OBJECT(self)->center,
- (a->x + b->x + c->x + d->x)/4,
- (a->y + b->y + c->y + d->y)/4,
- (a->z + b->z + c->z + d->z)/4);
- self->verts[0] = gis_point_ref(a);
- self->verts[1] = gis_point_ref(b);
- self->verts[2] = gis_point_ref(c);
- self->verts[3] = gis_point_ref(d);
- self->tex = tex;
- return self;
-}
-
-void gis_quad_free(GisQuad *self)
-{
- gis_point_unref(self->verts[0]);
- gis_point_unref(self->verts[1]);
- gis_point_unref(self->verts[2]);
- gis_point_unref(self->verts[3]);