mirror of
https://github.com/Relintai/pandemonium_engine.git
synced 2024-12-21 03:16:54 +01:00
396 lines
12 KiB
C++
396 lines
12 KiB
C++
/*************************************************************************/
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/* texture_layer_merger.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* PANDEMONIUM ENGINE */
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/* https://github.com/Relintai/pandemonium_engine */
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/*************************************************************************/
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/* Copyright (c) 2022-present Péter Magyar. */
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/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
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/* Copyright (c) 2007-2022 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 "texture_layer_merger.h"
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int TextureLayerMerger::get_width() const {
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return _width;
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}
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void TextureLayerMerger::set_width(const int p_value) {
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_width = p_value;
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}
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int TextureLayerMerger::get_height() const {
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return _height;
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}
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void TextureLayerMerger::set_height(const int p_value) {
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_height = p_value;
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}
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uint32_t TextureLayerMerger::get_texture_flags() const {
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return _texture_flags;
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}
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void TextureLayerMerger::set_texture_flags(uint32_t p_flags) {
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_texture_flags = p_flags;
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}
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Color TextureLayerMerger::get_base_color() const {
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return _base_color;
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}
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void TextureLayerMerger::set_base_color(const Color &p_color) {
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_base_color = p_color;
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}
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Ref<Image> TextureLayerMerger::get_data() const {
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return _image;
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}
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void TextureLayerMerger::set_data(const Ref<Image> &p_image) {
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ERR_FAIL_COND(p_image.is_null());
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_image = p_image;
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}
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Ref<ImageTexture> TextureLayerMerger::get_result_as_texture() const {
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ERR_FAIL_COND_V(!_image.is_valid(), Ref<ImageTexture>());
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Ref<ImageTexture> tex;
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tex.instance();
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tex->create_from_image(_image);
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return tex;
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}
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void TextureLayerMerger::add_texture(const Ref<Texture> &p_texture, const Color &p_color, const Vector2 &p_position, Rect2 p_rect) {
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ERR_FAIL_COND(!p_texture.is_valid());
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LayerMergerEntry entry;
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entry.texture = p_texture;
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entry.color = p_color;
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entry.position = p_position;
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if (p_rect.size.x <= 0)
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p_rect.size.x = p_texture->get_width();
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if (p_rect.size.y <= 0)
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p_rect.size.y = p_texture->get_height();
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entry.rect = p_rect;
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if (_width == 0 || _height == 0) {
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Ref<AtlasTexture> at = p_texture;
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int w = 0;
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int h = 0;
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if (at.is_valid()) {
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w = at->get_region().size.x;
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h = at->get_region().size.y;
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} else {
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w = p_texture->get_width();
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h = p_texture->get_height();
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}
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if (_width == 0)
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_width = w;
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if (_height == 0)
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_height = h;
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}
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_entries.push_back(entry);
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}
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Ref<Texture> TextureLayerMerger::get_texture(const int p_index) {
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ERR_FAIL_INDEX_V(p_index, _entries.size(), Ref<Texture>());
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return _entries.get(p_index).texture;
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}
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void TextureLayerMerger::set_texture(const int p_index, const Ref<Texture> &p_texture) {
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ERR_FAIL_INDEX(p_index, _entries.size());
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_entries.get(p_index).texture = p_texture;
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}
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Color TextureLayerMerger::get_color(const int p_index) {
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ERR_FAIL_INDEX_V(p_index, _entries.size(), Color());
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return _entries.get(p_index).color;
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}
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void TextureLayerMerger::set_color(const int p_index, const Color &p_color) {
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ERR_FAIL_INDEX(p_index, _entries.size());
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_entries.get(p_index).color = p_color;
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}
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Vector2 TextureLayerMerger::get_position(const int p_index) {
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ERR_FAIL_INDEX_V(p_index, _entries.size(), Vector2());
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return _entries.get(p_index).position;
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}
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void TextureLayerMerger::set_position(const int p_index, const Vector2 &p_position) {
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ERR_FAIL_INDEX(p_index, _entries.size());
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_entries.get(p_index).position = p_position;
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}
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Rect2 TextureLayerMerger::get_rect(const int p_index) {
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ERR_FAIL_INDEX_V(p_index, _entries.size(), Rect2());
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return _entries.get(p_index).rect;
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}
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void TextureLayerMerger::set_rect(const int p_index, const Rect2 &p_rect) {
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ERR_FAIL_INDEX(p_index, _entries.size());
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_entries.get(p_index).rect = p_rect;
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}
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void TextureLayerMerger::remove_texture(const int p_index) {
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ERR_FAIL_INDEX(p_index, _entries.size());
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return _entries.remove(p_index);
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}
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int TextureLayerMerger::get_texture_count() {
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return _entries.size();
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}
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void TextureLayerMerger::clear() {
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_entries.clear();
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}
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void TextureLayerMerger::merge() {
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ERR_FAIL_COND(_width <= 0 || _height <= 0);
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if (!_image.is_valid()) {
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_image.instance();
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}
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PoolVector<uint8_t> data;
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data.resize(_width * _height * 4);
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write_base_color_to_array(data);
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for (int i = 0; i < _entries.size(); ++i) {
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const LayerMergerEntry &e = _entries[i];
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ERR_CONTINUE(!e.texture.is_valid());
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int rx = e.rect.position.x + 0.1;
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int ry = e.rect.position.y + 0.1;
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int rw = e.rect.size.x + 0.1;
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int rh = e.rect.size.y + 0.1;
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int posx = e.position.x + 0.1;
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int posy = e.position.y + 0.1;
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int atlas_x = 0;
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int atlas_y = 0;
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if (posx > _width || posy > _height)
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continue;
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Ref<AtlasTexture> altas_texture = e.texture;
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Ref<Image> input_image;
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if (altas_texture.is_valid()) {
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Ref<Texture> atlas = altas_texture->get_atlas();
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ERR_CONTINUE(!atlas.is_valid());
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input_image = atlas->get_data();
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Rect2 region = altas_texture->get_region();
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atlas_x = region.position.x + 0.1;
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atlas_y = region.position.y + 0.1;
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int atlas_w = region.size.x + 0.1;
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int atlas_h = region.size.y + 0.1;
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if (rw > atlas_w)
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rw = atlas_w;
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if (rh > atlas_h)
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rh = atlas_h;
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} else {
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input_image = e.texture->get_data();
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}
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ERR_CONTINUE(!input_image.is_valid());
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int iiw = input_image->get_width();
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int iih = input_image->get_height();
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PoolVector<uint8_t> input_image_data = input_image->get_data();
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const Color &blendcolor = e.color;
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float blend_arr[] = {
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blendcolor.r,
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blendcolor.g,
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blendcolor.b,
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blendcolor.a
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};
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ERR_CONTINUE(iiw == 0 || iih == 0);
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ERR_CONTINUE(rx > iiw || ry > iih);
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//clamp width, and height if bigger (for ease of use)
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if (atlas_x + rx + rw >= iiw)
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rw -= (atlas_x + rx + rw) - iiw;
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if (atlas_y + ry + rh >= iih)
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rh -= (atlas_y + ry + rh) - iih;
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//Let's take position into account
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if (rx + rw + posx >= _width)
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rw -= (rx + rw + posx) - _width;
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if (ry + rh + posy >= _height)
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rh -= (ry + rh + posy) - _height;
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if (rw <= 0 || rh <= 0)
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continue;
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int elen = 0;
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if (input_image->get_format() == Image::FORMAT_RGBA8) {
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elen = 4;
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} else if (input_image->get_format() == Image::FORMAT_RGB8) {
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elen = 3;
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}
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ERR_CONTINUE_MSG(elen == 0, "Unsupported image format! Format: " + String::num(input_image->get_format()));
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for (int y = 0; y < rh; ++y) {
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int img_gen_index = (posx + ((y + posy) * _width)) * 4;
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int img_input_index = (rx + atlas_x + ((y + atlas_y + ry) * iiw)) * elen;
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for (int x = 0; x < rw; ++x) {
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float blend_alpha = blendcolor.a;
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if (elen == 4) {
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float orig_alpha = input_image_data.get(img_input_index + 3) / 255.0;
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blend_alpha -= 1.0 - orig_alpha;
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if (blend_alpha < 0)
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blend_alpha = 0;
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blend_alpha = orig_alpha;
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}
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for (int sp = 0; sp < elen; ++sp) {
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int main_index = img_gen_index + sp;
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int main_val = data.get(main_index);
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int input_val = input_image_data.get(img_input_index + sp);
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main_val = (input_val * blend_arr[sp]) * blend_alpha + (main_val * (1 - blend_alpha));
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if (main_val > 255)
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main_val = 255;
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data.set(main_index, main_val);
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}
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img_gen_index += 4;
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img_input_index += elen;
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}
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}
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}
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_image->create(_width, _height, (_texture_flags & Texture::FLAG_MIPMAPS) != 0, Image::FORMAT_RGBA8, data);
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}
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void TextureLayerMerger::write_base_color_to_array(PoolVector<uint8_t> &data) {
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int cr = _base_color.r * 255;
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int cg = _base_color.g * 255;
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int cb = _base_color.b * 255;
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int ca = _base_color.a * 255;
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for (int i = 0; i < data.size(); i += 4) {
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data.set(i, cr);
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data.set(i + 1, cg);
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data.set(i + 2, cb);
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data.set(i + 3, ca);
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}
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}
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void TextureLayerMerger::_bind_methods() {
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ClassDB::bind_method(D_METHOD("get_width"), &TextureLayerMerger::get_width);
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ClassDB::bind_method(D_METHOD("set_width", "image"), &TextureLayerMerger::set_width);
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ADD_PROPERTY(PropertyInfo(Variant::INT, "width"), "set_width", "get_width");
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ClassDB::bind_method(D_METHOD("get_height"), &TextureLayerMerger::get_height);
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ClassDB::bind_method(D_METHOD("set_height", "image"), &TextureLayerMerger::set_height);
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ADD_PROPERTY(PropertyInfo(Variant::INT, "height"), "set_height", "get_height");
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ClassDB::bind_method(D_METHOD("get_texture_flags"), &TextureLayerMerger::get_texture_flags);
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ClassDB::bind_method(D_METHOD("set_texture_flags", "image"), &TextureLayerMerger::set_texture_flags);
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ADD_PROPERTY(PropertyInfo(Variant::INT, "texture_flags", PROPERTY_HINT_FLAGS, "Mipmaps,Repeat,Filter"), "set_texture_flags", "get_texture_flags");
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ClassDB::bind_method(D_METHOD("get_base_color"), &TextureLayerMerger::get_base_color);
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ClassDB::bind_method(D_METHOD("set_base_color", "color"), &TextureLayerMerger::set_base_color);
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ADD_PROPERTY(PropertyInfo(Variant::COLOR, "base_color"), "set_base_color", "get_base_color");
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ClassDB::bind_method(D_METHOD("get_data"), &TextureLayerMerger::get_data);
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ClassDB::bind_method(D_METHOD("set_data", "image"), &TextureLayerMerger::set_data);
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ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "data", PROPERTY_HINT_RESOURCE_TYPE, "Image"), "set_data", "get_data");
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ClassDB::bind_method(D_METHOD("get_result_as_texture"), &TextureLayerMerger::get_result_as_texture);
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ClassDB::bind_method(D_METHOD("add_texture", "texture", "color", "position", "rect"), &TextureLayerMerger::add_texture, DEFVAL(Color(1, 1, 1, 1)), DEFVAL(Vector2()), DEFVAL(Rect2()));
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ClassDB::bind_method(D_METHOD("get_texture", "index"), &TextureLayerMerger::get_texture);
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ClassDB::bind_method(D_METHOD("set_texture", "index", "texture"), &TextureLayerMerger::set_texture);
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ClassDB::bind_method(D_METHOD("get_color", "index"), &TextureLayerMerger::get_color);
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ClassDB::bind_method(D_METHOD("set_color", "index", "color"), &TextureLayerMerger::set_color);
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ClassDB::bind_method(D_METHOD("get_position", "index"), &TextureLayerMerger::get_position);
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ClassDB::bind_method(D_METHOD("set_position", "index", "position"), &TextureLayerMerger::set_position);
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ClassDB::bind_method(D_METHOD("get_rect", "index"), &TextureLayerMerger::get_rect);
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ClassDB::bind_method(D_METHOD("set_rect", "index", "rect"), &TextureLayerMerger::set_rect);
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ClassDB::bind_method(D_METHOD("remove_texture", "index"), &TextureLayerMerger::remove_texture);
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ClassDB::bind_method(D_METHOD("get_texture_count"), &TextureLayerMerger::get_texture_count);
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ClassDB::bind_method(D_METHOD("clear"), &TextureLayerMerger::clear);
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ClassDB::bind_method(D_METHOD("merge"), &TextureLayerMerger::merge);
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}
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TextureLayerMerger::TextureLayerMerger() {
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_width = 0;
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_height = 0;
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_texture_flags = 0;
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}
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TextureLayerMerger::~TextureLayerMerger() {
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_image.unref();
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_entries.clear();
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}
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