paint: add point_in_aabb

paint/sources/functions.h

@@ -492,7 +492,8 @@ void      util_render_make_node_preview(ui_node_canvas_t *canvas, ui_node_t *nod
 void      util_render_pick_pos_nor_tex();
 mat4_t    util_render_get_decal_mat();
 void      util_brush_update();
-vec4_t    raycast_aabb(object_t *object, f32 mouse_x, f32 mouse_y);
+vec4_t    raycast_aabb_mouse(object_t *object);
+bool      point_in_aabb(object_t *object, vec4_t point);
 void      util_resize_borders();
 void      util_select_update();
 void      util_shortcut_brush();

paint/sources/util/util_raycast.c

@@ -1,6 +1,17 @@
 
 #include "../global.h"
 
-vec4_t raycast_aabb(object_t *object, f32 mouse_x, f32 mouse_y) {
+vec4_t raycast_aabb_mouse(object_t *object) {
 	return raycast_box_intersect(object->transform, mouse_x, mouse_y, scene_camera);
 }
+
+bool point_in_aabb(object_t *object, vec4_t point) {
+	transform_t *t  = object->transform;
+	f32          cx = transform_world_x(t);
+	f32          cy = transform_world_y(t);
+	f32          cz = transform_world_z(t);
+	f32          hx = t->dim.x / 2;
+	f32          hy = t->dim.y / 2;
+	f32          hz = t->dim.z / 2;
+	return point.x >= cx - hx && point.x <= cx + hx && point.y >= cy - hy && point.y <= cy + hy && point.z >= cz - hz && point.z <= cz + hz;
+}