godot/scene/2d/light_occluder_2d.cpp
Rémi Verschelde a7f49ac9a1 Update copyright statements to 2020
Happy new year to the wonderful Godot community!

We're starting a new decade with a well-established, non-profit, free
and open source game engine, and tons of further improvements in the
pipeline from hundreds of contributors.

Godot will keep getting better, and we're looking forward to all the
games that the community will keep developing and releasing with it.
2020-01-01 11:16:22 +01:00

302 lines
9.7 KiB
C++

/*************************************************************************/
/* light_occluder_2d.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "light_occluder_2d.h"
#include "core/engine.h"
#define LINE_GRAB_WIDTH 8
Rect2 OccluderPolygon2D::_edit_get_rect() const {
if (rect_cache_dirty) {
if (closed) {
PoolVector<Vector2>::Read r = polygon.read();
item_rect = Rect2();
for (int i = 0; i < polygon.size(); i++) {
Vector2 pos = r[i];
if (i == 0)
item_rect.position = pos;
else
item_rect.expand_to(pos);
}
rect_cache_dirty = false;
} else {
if (polygon.size() == 0) {
item_rect = Rect2();
} else {
Vector2 d = Vector2(LINE_GRAB_WIDTH, LINE_GRAB_WIDTH);
item_rect = Rect2(polygon[0] - d, 2 * d);
for (int i = 1; i < polygon.size(); i++) {
item_rect.expand_to(polygon[i] - d);
item_rect.expand_to(polygon[i] + d);
}
}
}
}
return item_rect;
}
bool OccluderPolygon2D::_edit_is_selected_on_click(const Point2 &p_point, double p_tolerance) const {
if (closed) {
return Geometry::is_point_in_polygon(p_point, Variant(polygon));
} else {
const real_t d = LINE_GRAB_WIDTH / 2 + p_tolerance;
PoolVector<Vector2>::Read points = polygon.read();
for (int i = 0; i < polygon.size() - 1; i++) {
Vector2 p = Geometry::get_closest_point_to_segment_2d(p_point, &points[i]);
if (p.distance_to(p_point) <= d)
return true;
}
return false;
}
}
void OccluderPolygon2D::set_polygon(const PoolVector<Vector2> &p_polygon) {
polygon = p_polygon;
rect_cache_dirty = true;
VS::get_singleton()->canvas_occluder_polygon_set_shape(occ_polygon, p_polygon, closed);
emit_changed();
}
PoolVector<Vector2> OccluderPolygon2D::get_polygon() const {
return polygon;
}
void OccluderPolygon2D::set_closed(bool p_closed) {
if (closed == p_closed)
return;
closed = p_closed;
if (polygon.size())
VS::get_singleton()->canvas_occluder_polygon_set_shape(occ_polygon, polygon, closed);
emit_changed();
}
bool OccluderPolygon2D::is_closed() const {
return closed;
}
void OccluderPolygon2D::set_cull_mode(CullMode p_mode) {
cull = p_mode;
VS::get_singleton()->canvas_occluder_polygon_set_cull_mode(occ_polygon, VS::CanvasOccluderPolygonCullMode(p_mode));
}
OccluderPolygon2D::CullMode OccluderPolygon2D::get_cull_mode() const {
return cull;
}
RID OccluderPolygon2D::get_rid() const {
return occ_polygon;
}
void OccluderPolygon2D::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_closed", "closed"), &OccluderPolygon2D::set_closed);
ClassDB::bind_method(D_METHOD("is_closed"), &OccluderPolygon2D::is_closed);
ClassDB::bind_method(D_METHOD("set_cull_mode", "cull_mode"), &OccluderPolygon2D::set_cull_mode);
ClassDB::bind_method(D_METHOD("get_cull_mode"), &OccluderPolygon2D::get_cull_mode);
ClassDB::bind_method(D_METHOD("set_polygon", "polygon"), &OccluderPolygon2D::set_polygon);
ClassDB::bind_method(D_METHOD("get_polygon"), &OccluderPolygon2D::get_polygon);
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "closed"), "set_closed", "is_closed");
ADD_PROPERTY(PropertyInfo(Variant::INT, "cull_mode", PROPERTY_HINT_ENUM, "Disabled,ClockWise,CounterClockWise"), "set_cull_mode", "get_cull_mode");
ADD_PROPERTY(PropertyInfo(Variant::POOL_VECTOR2_ARRAY, "polygon"), "set_polygon", "get_polygon");
BIND_ENUM_CONSTANT(CULL_DISABLED);
BIND_ENUM_CONSTANT(CULL_CLOCKWISE);
BIND_ENUM_CONSTANT(CULL_COUNTER_CLOCKWISE);
}
OccluderPolygon2D::OccluderPolygon2D() {
occ_polygon = VS::get_singleton()->canvas_occluder_polygon_create();
closed = true;
cull = CULL_DISABLED;
rect_cache_dirty = true;
}
OccluderPolygon2D::~OccluderPolygon2D() {
VS::get_singleton()->free(occ_polygon);
}
void LightOccluder2D::_poly_changed() {
#ifdef DEBUG_ENABLED
update();
#endif
}
void LightOccluder2D::_notification(int p_what) {
if (p_what == NOTIFICATION_ENTER_CANVAS) {
VS::get_singleton()->canvas_light_occluder_attach_to_canvas(occluder, get_canvas());
VS::get_singleton()->canvas_light_occluder_set_transform(occluder, get_global_transform());
VS::get_singleton()->canvas_light_occluder_set_enabled(occluder, is_visible_in_tree());
}
if (p_what == NOTIFICATION_TRANSFORM_CHANGED) {
VS::get_singleton()->canvas_light_occluder_set_transform(occluder, get_global_transform());
}
if (p_what == NOTIFICATION_VISIBILITY_CHANGED) {
VS::get_singleton()->canvas_light_occluder_set_enabled(occluder, is_visible_in_tree());
}
if (p_what == NOTIFICATION_DRAW) {
if (Engine::get_singleton()->is_editor_hint()) {
if (occluder_polygon.is_valid()) {
PoolVector<Vector2> poly = occluder_polygon->get_polygon();
if (poly.size()) {
if (occluder_polygon->is_closed()) {
Vector<Color> color;
color.push_back(Color(0, 0, 0, 0.6));
draw_polygon(Variant(poly), color);
} else {
int ps = poly.size();
PoolVector<Vector2>::Read r = poly.read();
for (int i = 0; i < ps - 1; i++) {
draw_line(r[i], r[i + 1], Color(0, 0, 0, 0.6), 3);
}
}
}
}
}
}
if (p_what == NOTIFICATION_EXIT_CANVAS) {
VS::get_singleton()->canvas_light_occluder_attach_to_canvas(occluder, RID());
}
}
Rect2 LightOccluder2D::_edit_get_rect() const {
return occluder_polygon.is_valid() ? occluder_polygon->_edit_get_rect() : Rect2();
}
bool LightOccluder2D::_edit_is_selected_on_click(const Point2 &p_point, double p_tolerance) const {
return occluder_polygon.is_valid() ? occluder_polygon->_edit_is_selected_on_click(p_point, p_tolerance) : false;
}
void LightOccluder2D::set_occluder_polygon(const Ref<OccluderPolygon2D> &p_polygon) {
#ifdef DEBUG_ENABLED
if (occluder_polygon.is_valid())
occluder_polygon->disconnect("changed", this, "_poly_changed");
#endif
occluder_polygon = p_polygon;
if (occluder_polygon.is_valid())
VS::get_singleton()->canvas_light_occluder_set_polygon(occluder, occluder_polygon->get_rid());
else
VS::get_singleton()->canvas_light_occluder_set_polygon(occluder, RID());
#ifdef DEBUG_ENABLED
if (occluder_polygon.is_valid())
occluder_polygon->connect("changed", this, "_poly_changed");
update();
#endif
}
Ref<OccluderPolygon2D> LightOccluder2D::get_occluder_polygon() const {
return occluder_polygon;
}
void LightOccluder2D::set_occluder_light_mask(int p_mask) {
mask = p_mask;
VS::get_singleton()->canvas_light_occluder_set_light_mask(occluder, mask);
}
int LightOccluder2D::get_occluder_light_mask() const {
return mask;
}
String LightOccluder2D::get_configuration_warning() const {
if (!occluder_polygon.is_valid()) {
return TTR("An occluder polygon must be set (or drawn) for this occluder to take effect.");
}
if (occluder_polygon.is_valid() && occluder_polygon->get_polygon().size() == 0) {
return TTR("The occluder polygon for this occluder is empty. Please draw a polygon.");
}
return String();
}
void LightOccluder2D::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_occluder_polygon", "polygon"), &LightOccluder2D::set_occluder_polygon);
ClassDB::bind_method(D_METHOD("get_occluder_polygon"), &LightOccluder2D::get_occluder_polygon);
ClassDB::bind_method(D_METHOD("set_occluder_light_mask", "mask"), &LightOccluder2D::set_occluder_light_mask);
ClassDB::bind_method(D_METHOD("get_occluder_light_mask"), &LightOccluder2D::get_occluder_light_mask);
ClassDB::bind_method("_poly_changed", &LightOccluder2D::_poly_changed);
ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "occluder", PROPERTY_HINT_RESOURCE_TYPE, "OccluderPolygon2D"), "set_occluder_polygon", "get_occluder_polygon");
ADD_PROPERTY(PropertyInfo(Variant::INT, "light_mask", PROPERTY_HINT_LAYERS_2D_RENDER), "set_occluder_light_mask", "get_occluder_light_mask");
}
LightOccluder2D::LightOccluder2D() {
occluder = VS::get_singleton()->canvas_light_occluder_create();
mask = 1;
set_notify_transform(true);
}
LightOccluder2D::~LightOccluder2D() {
VS::get_singleton()->free(occluder);
}