godot/scene/2d/line_2d.cpp
PouleyKetchoupp 1591677eb8 Fixed antialiasing option for Polygon2D
Some cases were not handled properly for Polygon2D after making changes in common code to fix Line2D antialiasing. Added an option for drawing polygons to differentiate the two use cases.

Fixes #34568
2020-01-01 11:40:14 +01:00

434 lines
14 KiB
C++

/*************************************************************************/
/* line_2d.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2019 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, */
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/* 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 */
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/* */
/* 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.*/
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/*************************************************************************/
#include "line_2d.h"
#include "line_builder.h"
#include "core/core_string_names.h"
// Needed so we can bind functions
VARIANT_ENUM_CAST(Line2D::LineJointMode)
VARIANT_ENUM_CAST(Line2D::LineCapMode)
VARIANT_ENUM_CAST(Line2D::LineTextureMode)
Line2D::Line2D() {
_joint_mode = LINE_JOINT_SHARP;
_begin_cap_mode = LINE_CAP_NONE;
_end_cap_mode = LINE_CAP_NONE;
_width = 10;
_default_color = Color(0.4, 0.5, 1);
_texture_mode = LINE_TEXTURE_NONE;
_sharp_limit = 2.f;
_round_precision = 8;
_antialiased = false;
}
Rect2 Line2D::_edit_get_rect() const {
if (_points.size() == 0)
return Rect2(0, 0, 0, 0);
Vector2 d = Vector2(_width, _width);
Rect2 aabb = Rect2(_points[0] - d, 2 * d);
for (int i = 1; i < _points.size(); i++) {
aabb.expand_to(_points[i] - d);
aabb.expand_to(_points[i] + d);
}
return aabb;
}
bool Line2D::_edit_use_rect() const {
return true;
}
bool Line2D::_edit_is_selected_on_click(const Point2 &p_point, double p_tolerance) const {
const real_t d = _width / 2 + p_tolerance;
PoolVector<Vector2>::Read points = _points.read();
for (int i = 0; i < _points.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 Line2D::set_points(const PoolVector<Vector2> &p_points) {
_points = p_points;
update();
}
void Line2D::set_width(float p_width) {
if (p_width < 0.0)
p_width = 0.0;
_width = p_width;
update();
}
float Line2D::get_width() const {
return _width;
}
void Line2D::set_curve(const Ref<Curve> &p_curve) {
// Cleanup previous connection if any
if (_curve.is_valid()) {
_curve->disconnect(CoreStringNames::get_singleton()->changed, this, "_curve_changed");
}
_curve = p_curve;
// Connect to the curve so the line will update when it is changed
if (_curve.is_valid()) {
_curve->connect(CoreStringNames::get_singleton()->changed, this, "_curve_changed");
}
update();
}
Ref<Curve> Line2D::get_curve() const {
return _curve;
}
PoolVector<Vector2> Line2D::get_points() const {
return _points;
}
void Line2D::set_point_position(int i, Vector2 p_pos) {
_points.set(i, p_pos);
update();
}
Vector2 Line2D::get_point_position(int i) const {
ERR_FAIL_INDEX_V(i, _points.size(), Vector2());
return _points.get(i);
}
int Line2D::get_point_count() const {
return _points.size();
}
void Line2D::clear_points() {
int count = _points.size();
if (count > 0) {
_points.resize(0);
update();
}
}
void Line2D::add_point(Vector2 p_pos, int p_atpos) {
if (p_atpos < 0 || _points.size() < p_atpos) {
_points.append(p_pos);
} else {
_points.insert(p_atpos, p_pos);
}
update();
}
void Line2D::remove_point(int i) {
_points.remove(i);
update();
}
void Line2D::set_default_color(Color p_color) {
_default_color = p_color;
update();
}
Color Line2D::get_default_color() const {
return _default_color;
}
void Line2D::set_gradient(const Ref<Gradient> &p_gradient) {
// Cleanup previous connection if any
if (_gradient.is_valid()) {
_gradient->disconnect(CoreStringNames::get_singleton()->changed, this, "_gradient_changed");
}
_gradient = p_gradient;
// Connect to the gradient so the line will update when the ColorRamp is changed
if (_gradient.is_valid()) {
_gradient->connect(CoreStringNames::get_singleton()->changed, this, "_gradient_changed");
}
update();
}
Ref<Gradient> Line2D::get_gradient() const {
return _gradient;
}
void Line2D::set_texture(const Ref<Texture> &p_texture) {
_texture = p_texture;
update();
}
Ref<Texture> Line2D::get_texture() const {
return _texture;
}
void Line2D::set_texture_mode(const LineTextureMode p_mode) {
_texture_mode = p_mode;
update();
}
Line2D::LineTextureMode Line2D::get_texture_mode() const {
return _texture_mode;
}
void Line2D::set_joint_mode(LineJointMode p_mode) {
_joint_mode = p_mode;
update();
}
Line2D::LineJointMode Line2D::get_joint_mode() const {
return _joint_mode;
}
void Line2D::set_begin_cap_mode(LineCapMode p_mode) {
_begin_cap_mode = p_mode;
update();
}
Line2D::LineCapMode Line2D::get_begin_cap_mode() const {
return _begin_cap_mode;
}
void Line2D::set_end_cap_mode(LineCapMode p_mode) {
_end_cap_mode = p_mode;
update();
}
Line2D::LineCapMode Line2D::get_end_cap_mode() const {
return _end_cap_mode;
}
void Line2D::_notification(int p_what) {
switch (p_what) {
case NOTIFICATION_DRAW:
_draw();
break;
}
}
void Line2D::set_sharp_limit(float p_limit) {
if (p_limit < 0.f)
p_limit = 0.f;
_sharp_limit = p_limit;
update();
}
float Line2D::get_sharp_limit() const {
return _sharp_limit;
}
void Line2D::set_round_precision(int p_precision) {
if (p_precision < 1)
p_precision = 1;
_round_precision = p_precision;
update();
}
int Line2D::get_round_precision() const {
return _round_precision;
}
void Line2D::set_antialiased(bool p_antialiased) {
_antialiased = p_antialiased;
update();
}
bool Line2D::get_antialiased() const {
return _antialiased;
}
void Line2D::_draw() {
if (_points.size() <= 1 || _width == 0.f)
return;
// TODO Is this really needed?
// Copy points for faster access
Vector<Vector2> points;
points.resize(_points.size());
int len = points.size();
{
PoolVector<Vector2>::Read points_read = _points.read();
for (int i = 0; i < len; ++i) {
points.write[i] = points_read[i];
}
}
// TODO Maybe have it as member rather than copying parameters and allocating memory?
LineBuilder lb;
lb.points = points;
lb.default_color = _default_color;
lb.gradient = *_gradient;
lb.texture_mode = _texture_mode;
lb.joint_mode = _joint_mode;
lb.begin_cap_mode = _begin_cap_mode;
lb.end_cap_mode = _end_cap_mode;
lb.round_precision = _round_precision;
lb.sharp_limit = _sharp_limit;
lb.width = _width;
lb.curve = *_curve;
RID texture_rid;
if (_texture.is_valid()) {
texture_rid = _texture->get_rid();
lb.tile_aspect = _texture->get_size().aspect();
}
lb.build();
VS::get_singleton()->canvas_item_add_triangle_array(
get_canvas_item(),
lb.indices,
lb.vertices,
lb.colors,
lb.uvs, Vector<int>(), Vector<float>(),
texture_rid, -1, RID(),
_antialiased, true);
// DEBUG
// Draw wireframe
// if(lb.indices.size() % 3 == 0) {
// Color col(0,0,0);
// for(int i = 0; i < lb.indices.size(); i += 3) {
// int vi = lb.indices[i];
// int lbvsize = lb.vertices.size();
// Vector2 a = lb.vertices[lb.indices[i]];
// Vector2 b = lb.vertices[lb.indices[i+1]];
// Vector2 c = lb.vertices[lb.indices[i+2]];
// draw_line(a, b, col);
// draw_line(b, c, col);
// draw_line(c, a, col);
// }
// for(int i = 0; i < lb.vertices.size(); ++i) {
// Vector2 p = lb.vertices[i];
// draw_rect(Rect2(p.x-1, p.y-1, 2, 2), Color(0,0,0,0.5));
// }
// }
}
void Line2D::_gradient_changed() {
update();
}
void Line2D::_curve_changed() {
update();
}
// static
void Line2D::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_points", "points"), &Line2D::set_points);
ClassDB::bind_method(D_METHOD("get_points"), &Line2D::get_points);
ClassDB::bind_method(D_METHOD("set_point_position", "i", "position"), &Line2D::set_point_position);
ClassDB::bind_method(D_METHOD("get_point_position", "i"), &Line2D::get_point_position);
ClassDB::bind_method(D_METHOD("get_point_count"), &Line2D::get_point_count);
ClassDB::bind_method(D_METHOD("add_point", "position", "at_position"), &Line2D::add_point, DEFVAL(-1));
ClassDB::bind_method(D_METHOD("remove_point", "i"), &Line2D::remove_point);
ClassDB::bind_method(D_METHOD("clear_points"), &Line2D::clear_points);
ClassDB::bind_method(D_METHOD("set_width", "width"), &Line2D::set_width);
ClassDB::bind_method(D_METHOD("get_width"), &Line2D::get_width);
ClassDB::bind_method(D_METHOD("set_curve", "curve"), &Line2D::set_curve);
ClassDB::bind_method(D_METHOD("get_curve"), &Line2D::get_curve);
ClassDB::bind_method(D_METHOD("set_default_color", "color"), &Line2D::set_default_color);
ClassDB::bind_method(D_METHOD("get_default_color"), &Line2D::get_default_color);
ClassDB::bind_method(D_METHOD("set_gradient", "color"), &Line2D::set_gradient);
ClassDB::bind_method(D_METHOD("get_gradient"), &Line2D::get_gradient);
ClassDB::bind_method(D_METHOD("set_texture", "texture"), &Line2D::set_texture);
ClassDB::bind_method(D_METHOD("get_texture"), &Line2D::get_texture);
ClassDB::bind_method(D_METHOD("set_texture_mode", "mode"), &Line2D::set_texture_mode);
ClassDB::bind_method(D_METHOD("get_texture_mode"), &Line2D::get_texture_mode);
ClassDB::bind_method(D_METHOD("set_joint_mode", "mode"), &Line2D::set_joint_mode);
ClassDB::bind_method(D_METHOD("get_joint_mode"), &Line2D::get_joint_mode);
ClassDB::bind_method(D_METHOD("set_begin_cap_mode", "mode"), &Line2D::set_begin_cap_mode);
ClassDB::bind_method(D_METHOD("get_begin_cap_mode"), &Line2D::get_begin_cap_mode);
ClassDB::bind_method(D_METHOD("set_end_cap_mode", "mode"), &Line2D::set_end_cap_mode);
ClassDB::bind_method(D_METHOD("get_end_cap_mode"), &Line2D::get_end_cap_mode);
ClassDB::bind_method(D_METHOD("set_sharp_limit", "limit"), &Line2D::set_sharp_limit);
ClassDB::bind_method(D_METHOD("get_sharp_limit"), &Line2D::get_sharp_limit);
ClassDB::bind_method(D_METHOD("set_round_precision", "precision"), &Line2D::set_round_precision);
ClassDB::bind_method(D_METHOD("get_round_precision"), &Line2D::get_round_precision);
ClassDB::bind_method(D_METHOD("set_antialiased", "antialiased"), &Line2D::set_antialiased);
ClassDB::bind_method(D_METHOD("get_antialiased"), &Line2D::get_antialiased);
ADD_PROPERTY(PropertyInfo(Variant::POOL_VECTOR2_ARRAY, "points"), "set_points", "get_points");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "width"), "set_width", "get_width");
ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "width_curve", PROPERTY_HINT_RESOURCE_TYPE, "Curve"), "set_curve", "get_curve");
ADD_PROPERTY(PropertyInfo(Variant::COLOR, "default_color"), "set_default_color", "get_default_color");
ADD_GROUP("Fill", "");
ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "gradient", PROPERTY_HINT_RESOURCE_TYPE, "Gradient"), "set_gradient", "get_gradient");
ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "texture", PROPERTY_HINT_RESOURCE_TYPE, "Texture"), "set_texture", "get_texture");
ADD_PROPERTY(PropertyInfo(Variant::INT, "texture_mode", PROPERTY_HINT_ENUM, "None,Tile,Stretch"), "set_texture_mode", "get_texture_mode");
ADD_GROUP("Capping", "");
ADD_PROPERTY(PropertyInfo(Variant::INT, "joint_mode", PROPERTY_HINT_ENUM, "Sharp,Bevel,Round"), "set_joint_mode", "get_joint_mode");
ADD_PROPERTY(PropertyInfo(Variant::INT, "begin_cap_mode", PROPERTY_HINT_ENUM, "None,Box,Round"), "set_begin_cap_mode", "get_begin_cap_mode");
ADD_PROPERTY(PropertyInfo(Variant::INT, "end_cap_mode", PROPERTY_HINT_ENUM, "None,Box,Round"), "set_end_cap_mode", "get_end_cap_mode");
ADD_GROUP("Border", "");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "sharp_limit"), "set_sharp_limit", "get_sharp_limit");
ADD_PROPERTY(PropertyInfo(Variant::INT, "round_precision"), "set_round_precision", "get_round_precision");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "antialiased"), "set_antialiased", "get_antialiased");
BIND_ENUM_CONSTANT(LINE_JOINT_SHARP);
BIND_ENUM_CONSTANT(LINE_JOINT_BEVEL);
BIND_ENUM_CONSTANT(LINE_JOINT_ROUND);
BIND_ENUM_CONSTANT(LINE_CAP_NONE);
BIND_ENUM_CONSTANT(LINE_CAP_BOX);
BIND_ENUM_CONSTANT(LINE_CAP_ROUND);
BIND_ENUM_CONSTANT(LINE_TEXTURE_NONE);
BIND_ENUM_CONSTANT(LINE_TEXTURE_TILE);
BIND_ENUM_CONSTANT(LINE_TEXTURE_STRETCH);
ClassDB::bind_method(D_METHOD("_gradient_changed"), &Line2D::_gradient_changed);
ClassDB::bind_method(D_METHOD("_curve_changed"), &Line2D::_curve_changed);
}