237 lines
8.4 KiB
C++
237 lines
8.4 KiB
C++
/**************************************************************************/
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/* occluder_shape_polygon.cpp */
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/**************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/**************************************************************************/
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#include "occluder_shape_polygon.h"
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#include "servers/visual_server.h"
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#ifdef TOOLS_ENABLED
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void OccluderShapePolygon::_update_aabb() {
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_aabb_local = AABB();
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if (_poly_pts_local.size()) {
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Vector3 begin = _vec2to3(_poly_pts_local[0]);
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Vector3 end = begin;
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for (int n = 1; n < _poly_pts_local.size(); n++) {
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Vector3 pt = _vec2to3(_poly_pts_local[n]);
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begin.x = MIN(begin.x, pt.x);
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begin.y = MIN(begin.y, pt.y);
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begin.z = MIN(begin.z, pt.z);
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end.x = MAX(end.x, pt.x);
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end.y = MAX(end.y, pt.y);
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end.z = MAX(end.z, pt.z);
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}
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for (int n = 0; n < _hole_pts_local.size(); n++) {
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Vector3 pt = _vec2to3(_hole_pts_local[n]);
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begin.x = MIN(begin.x, pt.x);
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begin.y = MIN(begin.y, pt.y);
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begin.z = MIN(begin.z, pt.z);
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end.x = MAX(end.x, pt.x);
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end.y = MAX(end.y, pt.y);
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end.z = MAX(end.z, pt.z);
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}
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_aabb_local.position = begin;
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_aabb_local.size = end - begin;
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}
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}
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AABB OccluderShapePolygon::get_fallback_gizmo_aabb() const {
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return _aabb_local;
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}
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#endif
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void OccluderShapePolygon::_sanitize_points_internal(const PoolVector<Vector2> &p_from, Vector<Vector2> &r_to) {
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// remove duplicates? NYI maybe not necessary
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Vector<Vector2> raw;
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raw.resize(p_from.size());
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for (int n = 0; n < p_from.size(); n++) {
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raw.set(n, p_from[n]);
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}
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// this function may get rid of some concave points due to user editing ..
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// may not be necessary, no idea how fast it is
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r_to = Geometry::convex_hull_2d(raw);
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// some peculiarity of convex_hull_2d function, it duplicates the last point for some reason
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if (r_to.size() > 1) {
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r_to.resize(r_to.size() - 1);
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}
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// sort winding, the system expects counter clockwise polys
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Geometry::sort_polygon_winding(r_to, false);
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}
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void OccluderShapePolygon::_sanitize_points() {
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_sanitize_points_internal(_poly_pts_local_raw, _poly_pts_local);
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_sanitize_points_internal(_hole_pts_local_raw, _hole_pts_local);
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#ifdef TOOLS_ENABLED
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_update_aabb();
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#endif
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}
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void OccluderShapePolygon::set_polygon_point(int p_idx, const Vector2 &p_point) {
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ERR_FAIL_INDEX_MSG(p_idx, _poly_pts_local_raw.size(), "Index out of bounds. Call set_polygon_points() to set the size of the array.");
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_poly_pts_local_raw.set(p_idx, p_point);
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_sanitize_points();
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update_shape_to_visual_server();
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notify_change_to_owners();
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}
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void OccluderShapePolygon::set_hole_point(int p_idx, const Vector2 &p_point) {
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ERR_FAIL_INDEX_MSG(p_idx, _hole_pts_local_raw.size(), "Index out of bounds. Call set_hole_points() to set the size of the array.");
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_hole_pts_local_raw.set(p_idx, p_point);
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_sanitize_points();
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update_shape_to_visual_server();
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notify_change_to_owners();
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}
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void OccluderShapePolygon::set_polygon_points(const PoolVector<Vector2> &p_points) {
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_poly_pts_local_raw = p_points;
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_sanitize_points();
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update_shape_to_visual_server();
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notify_change_to_owners();
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}
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void OccluderShapePolygon::set_hole_points(const PoolVector<Vector2> &p_points) {
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_hole_pts_local_raw = p_points;
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_sanitize_points();
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update_shape_to_visual_server();
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notify_change_to_owners();
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}
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PoolVector<Vector2> OccluderShapePolygon::get_polygon_points() const {
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return _poly_pts_local_raw;
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}
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PoolVector<Vector2> OccluderShapePolygon::get_hole_points() const {
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return _hole_pts_local_raw;
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}
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void OccluderShapePolygon::update_shape_to_visual_server() {
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if (_poly_pts_local.size() < 3)
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return;
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Geometry::OccluderMeshData md;
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md.faces.resize(1);
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Geometry::OccluderMeshData::Face &face = md.faces[0];
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face.two_way = is_two_way();
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md.vertices.resize(_poly_pts_local.size() + _hole_pts_local.size());
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face.indices.resize(_poly_pts_local.size());
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for (int n = 0; n < _poly_pts_local.size(); n++) {
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md.vertices[n] = _vec2to3(_poly_pts_local[n]);
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face.indices[n] = n;
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}
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// hole points
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if (_hole_pts_local.size()) {
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face.holes.resize(1);
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Geometry::OccluderMeshData::Hole &hole = face.holes[0];
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hole.indices.resize(_hole_pts_local.size());
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for (int n = 0; n < _hole_pts_local.size(); n++) {
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int dest_idx = n + _poly_pts_local.size();
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hole.indices[n] = dest_idx;
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md.vertices[dest_idx] = _vec2to3(_hole_pts_local[n]);
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}
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}
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face.plane = Plane(Vector3(0, 0, 0), Vector3(0, 0, -1));
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VisualServer::get_singleton()->occluder_resource_mesh_update(get_shape(), md);
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}
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void OccluderShapePolygon::set_two_way(bool p_two_way) {
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_settings_two_way = p_two_way;
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update_shape_to_visual_server();
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notify_change_to_owners();
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}
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Transform OccluderShapePolygon::center_node(const Transform &p_global_xform, const Transform &p_parent_xform, real_t p_snap) {
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return Transform();
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}
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void OccluderShapePolygon::clear() {
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_poly_pts_local.clear();
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_poly_pts_local_raw.resize(0);
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_hole_pts_local.clear();
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_hole_pts_local_raw.resize(0);
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#ifdef TOOLS_ENABLED
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_aabb_local = AABB();
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#endif
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}
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void OccluderShapePolygon::_bind_methods() {
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ClassDB::bind_method(D_METHOD("set_two_way", "two_way"), &OccluderShapePolygon::set_two_way);
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ClassDB::bind_method(D_METHOD("is_two_way"), &OccluderShapePolygon::is_two_way);
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ADD_PROPERTY(PropertyInfo(Variant::BOOL, "two_way"), "set_two_way", "is_two_way");
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ClassDB::bind_method(D_METHOD("set_polygon_points", "points"), &OccluderShapePolygon::set_polygon_points);
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ClassDB::bind_method(D_METHOD("get_polygon_points"), &OccluderShapePolygon::get_polygon_points);
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ClassDB::bind_method(D_METHOD("set_polygon_point", "index", "position"), &OccluderShapePolygon::set_polygon_point);
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ADD_PROPERTY(PropertyInfo(Variant::POOL_VECTOR2_ARRAY, "polygon_points"), "set_polygon_points", "get_polygon_points");
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ClassDB::bind_method(D_METHOD("set_hole_points", "points"), &OccluderShapePolygon::set_hole_points);
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ClassDB::bind_method(D_METHOD("get_hole_points"), &OccluderShapePolygon::get_hole_points);
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ClassDB::bind_method(D_METHOD("set_hole_point", "index", "position"), &OccluderShapePolygon::set_hole_point);
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ADD_PROPERTY(PropertyInfo(Variant::POOL_VECTOR2_ARRAY, "hole_points"), "set_hole_points", "get_hole_points");
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}
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OccluderShapePolygon::OccluderShapePolygon() {
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if (get_shape().is_valid()) {
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VisualServer::get_singleton()->occluder_resource_prepare(get_shape(), VisualServer::OCCLUDER_TYPE_MESH);
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}
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clear();
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PoolVector<Vector2> points;
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points.resize(4);
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points.set(0, Vector2(1, -1));
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points.set(1, Vector2(1, 1));
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points.set(2, Vector2(-1, 1));
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points.set(3, Vector2(-1, -1));
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set_polygon_points(points); // default shape
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}
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