function __plane(origin, normal) constructor { self.origin = origin; self.normal = normal.normalize(); } #region functions function d3d_intersect_ray_plane(ray, plane) { //print($"Intersect {ray}\n\tto {plane}"); var det = plane.normal.dot(ray.direction); if(det == 0) return new __vec3(); var rayToPlane = plane.origin.subtract(ray.origin); var t = rayToPlane.dot(plane.normal) / det; if(t < 0) return new __vec3(); return ray.sampleDistance(t); } function d3d_point_to_plane(plane_origin, plane_normal, point) { var plane_to_point = [ point[0] - plane_origin[0], point[1] - plane_origin[1], point[2] - plane_origin[2], ]; var _dot = dot_product_3d(plane_to_point[0], plane_to_point[1], plane_to_point[2], plane_normal[0], plane_normal[1], plane_normal[2]); var _distance = _dot / point_distance_3d(0, 0, 0, plane_normal[0], plane_normal[1], plane_normal[2]); return _distance; } #endregion