I can show you the code Pretty, with proper whitespace Tell me, coder, now when did You last write readable code? I can open your eyes Make you see your bad indent Force you to respect the style The core devs agreed upon A whole new world A new fantastic code format A de facto standard With some sugar Enforced with clang-format A whole new world A dazzling style we all dreamed of And when we read it through It's crystal clear That now we're in a whole new world of code
194 lines
5.7 KiB
C++
194 lines
5.7 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) 2007-2017 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_LA8);
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ERR_FAIL_COND(img.get_format() != Image::FORMAT_LA8);
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create(Size2(img.get_width(), img.get_height()));
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PoolVector<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 * 2])
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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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ClassDB::bind_method(D_METHOD("create", "size"), &BitMap::create);
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ClassDB::bind_method(D_METHOD("create_from_image_alpha", "image"), &BitMap::create_from_image_alpha);
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ClassDB::bind_method(D_METHOD("set_bit", "pos", "bit"), &BitMap::set_bit);
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ClassDB::bind_method(D_METHOD("get_bit", "pos"), &BitMap::get_bit);
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ClassDB::bind_method(D_METHOD("set_bit_rect", "p_rect", "bit"), &BitMap::set_bit_rect);
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ClassDB::bind_method(D_METHOD("get_true_bit_count"), &BitMap::get_true_bit_count);
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ClassDB::bind_method(D_METHOD("get_size"), &BitMap::get_size);
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ClassDB::bind_method(D_METHOD("_set_data"), &BitMap::_set_data);
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ClassDB::bind_method(D_METHOD("_get_data"), &BitMap::_get_data);
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ADD_PROPERTY(PropertyInfo(Variant::DICTIONARY, "data", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NOEDITOR), "_set_data", "_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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