256 lines
6.5 KiB
C++
256 lines
6.5 KiB
C++
/*************************************************************************/
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/* bit_mask.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2015 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 "bit_mask.h"
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#include "io/image_loader.h"
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void BitMap::create(const Size2& p_size) {
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ERR_FAIL_COND(p_size.width<1);
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ERR_FAIL_COND(p_size.height<1);
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width=p_size.width;
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height=p_size.height;
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bitmask.resize(((width*height)/8)+1);
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zeromem(bitmask.ptr(),bitmask.size());
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}
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void BitMap::create_from_image_alpha(const Image& p_image){
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ERR_FAIL_COND(p_image.empty());
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Image img=p_image;
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img.convert(Image::FORMAT_INTENSITY);
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ERR_FAIL_COND(img.get_format()!=Image::FORMAT_INTENSITY);
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create(Size2(img.get_width(),img.get_height()));
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DVector<uint8_t>::Read r = img.get_data().read();
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uint8_t *w = bitmask.ptr();
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for(int i=0;i<width*height;i++) {
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int bbyte = i/8;
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int bbit = i % 8;
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if (r[i])
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w[bbyte]|=(1<<bbit);
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}
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}
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void BitMap::set_bit_rect(const Rect2& p_rect,bool p_value) {
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Rect2i current = Rect2i(0,0,width,height).clip(p_rect);
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uint8_t *data = bitmask.ptr();
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for(int i=current.pos.x;i<current.pos.x+current.size.x;i++) {
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for(int j=current.pos.y;j<current.pos.y+current.size.y;j++) {
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int ofs = width * j + i;
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int bbyte = ofs/8;
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int bbit = ofs % 8;
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uint8_t b = data[bbyte];
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if (p_value)
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b|=(1<<bbit);
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else
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b&=!(1<<bbit);
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data[bbyte]=b;
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}
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}
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}
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int BitMap::get_true_bit_count() const {
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int ds = bitmask.size();
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const uint8_t *d = bitmask.ptr();
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int c=0;
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//fast, almot branchless version
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for(int i=0;i<ds;i++) {
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c+=(d[i]&(1<<7))>>7;
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c+=(d[i]&(1<<6))>>6;
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c+=(d[i]&(1<<5))>>5;
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c+=(d[i]&(1<<4))>>4;
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c+=(d[i]&(1<<3))>>3;
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c+=(d[i]&(1<<2))>>2;
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c+=d[i]&1;
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}
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return c;
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}
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void BitMap::set_bit(const Point2& p_pos,bool p_value){
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int x=Math::fast_ftoi(p_pos.x);
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int y=Math::fast_ftoi(p_pos.y);
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ERR_FAIL_INDEX(x,width);
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ERR_FAIL_INDEX(y,height);
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int ofs = width * y + x;
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int bbyte = ofs/8;
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int bbit = ofs % 8;
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uint8_t b = bitmask[bbyte];
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if (p_value)
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b|=(1<<bbit);
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else
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b&=!(1<<bbit);
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bitmask[bbyte]=b;
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}
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bool BitMap::get_bit(const Point2& p_pos) const{
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int x=Math::fast_ftoi(p_pos.x);
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int y=Math::fast_ftoi(p_pos.y);
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ERR_FAIL_INDEX_V(x,width,false);
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ERR_FAIL_INDEX_V(y,height,false);
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int ofs = width * y + x;
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int bbyte = ofs/8;
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int bbit = ofs % 8;
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return (bitmask[bbyte]&(1<<bbit))!=0;
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}
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Size2 BitMap::get_size() const {
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return Size2(width,height);
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}
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void BitMap::_set_data(const Dictionary& p_d) {
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ERR_FAIL_COND(!p_d.has("size"));
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ERR_FAIL_COND(!p_d.has("data"));
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create(p_d["size"]);
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bitmask=p_d["data"];
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}
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Dictionary BitMap::_get_data() const{
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Dictionary d;
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d["size"]=get_size();
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d["data"]=bitmask;
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return d;
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}
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void BitMap::_bind_methods() {
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ObjectTypeDB::bind_method(_MD("create","size"),&BitMap::create);
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ObjectTypeDB::bind_method(_MD("create_from_image_alpha","image"),&BitMap::create_from_image_alpha);
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ObjectTypeDB::bind_method(_MD("set_bit","pos","bit"),&BitMap::set_bit);
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ObjectTypeDB::bind_method(_MD("get_bit","pos"),&BitMap::get_bit);
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ObjectTypeDB::bind_method(_MD("set_bit_rect","p_rect","bit"),&BitMap::set_bit_rect);
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ObjectTypeDB::bind_method(_MD("get_true_bit_count"),&BitMap::get_true_bit_count);
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ObjectTypeDB::bind_method(_MD("get_size"),&BitMap::get_size);
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ObjectTypeDB::bind_method(_MD("_set_data"),&BitMap::_set_data);
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ObjectTypeDB::bind_method(_MD("_get_data"),&BitMap::_get_data);
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ADD_PROPERTY(PropertyInfo(Variant::DICTIONARY,"data",PROPERTY_HINT_NONE,"",PROPERTY_USAGE_NOEDITOR),_SCS("_set_data"),_SCS("_get_data"));
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}
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BitMap::BitMap() {
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width=0;
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height=0;
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}
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//////////////////////////////////////
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RES ResourceFormatLoaderBitMap::load(const String &p_path,const String& p_original_path) {
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BitMap* ptr = memnew(BitMap);
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Ref<BitMap> bitmap( ptr );
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Image image;
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Error err = ImageLoader::load_image(p_path,&image);
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ERR_EXPLAIN("Failed loading image for BitMap: "+p_path);
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ERR_FAIL_COND_V(err, RES());
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bitmap->create_from_image_alpha(image);
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return bitmap;
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}
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bool ResourceFormatLoaderBitMap::handles_type(const String& p_type) const {
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return (p_type=="BitMap");
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}
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void ResourceFormatLoaderBitMap::get_recognized_extensions(List<String> *p_extensions) const {
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ImageLoader::get_recognized_extensions(p_extensions);
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}
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String ResourceFormatLoaderBitMap::get_resource_type(const String &p_path) const {
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List<String> extensions;
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ImageLoader::get_recognized_extensions(&extensions);
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String ext=p_path.extension().to_lower();
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for(List<String>::Element *E=extensions.front();E;E=E->next()) {
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if (E->get()==ext)
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return "BitMap";
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}
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return "";
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}
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ResourceFormatLoaderBitMap::ResourceFormatLoaderBitMap() {
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}
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