0ee0fa42e6
Using clang-tidy's `readability-braces-around-statements`. https://clang.llvm.org/extra/clang-tidy/checks/readability-braces-around-statements.html
600 lines
12 KiB
C++
600 lines
12 KiB
C++
/*************************************************************************/
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/* color.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
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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 "color.h"
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#include "core/color_names.inc"
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#include "core/map.h"
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#include "core/math/math_funcs.h"
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#include "core/print_string.h"
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uint32_t Color::to_argb32() const {
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uint32_t c = (uint8_t)Math::round(a * 255);
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c <<= 8;
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c |= (uint8_t)Math::round(r * 255);
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c <<= 8;
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c |= (uint8_t)Math::round(g * 255);
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c <<= 8;
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c |= (uint8_t)Math::round(b * 255);
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return c;
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}
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uint32_t Color::to_abgr32() const {
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uint32_t c = (uint8_t)Math::round(a * 255);
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c <<= 8;
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c |= (uint8_t)Math::round(b * 255);
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c <<= 8;
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c |= (uint8_t)Math::round(g * 255);
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c <<= 8;
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c |= (uint8_t)Math::round(r * 255);
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return c;
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}
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uint32_t Color::to_rgba32() const {
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uint32_t c = (uint8_t)Math::round(r * 255);
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c <<= 8;
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c |= (uint8_t)Math::round(g * 255);
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c <<= 8;
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c |= (uint8_t)Math::round(b * 255);
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c <<= 8;
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c |= (uint8_t)Math::round(a * 255);
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return c;
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}
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uint64_t Color::to_abgr64() const {
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uint64_t c = (uint16_t)Math::round(a * 65535);
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c <<= 16;
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c |= (uint16_t)Math::round(b * 65535);
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c <<= 16;
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c |= (uint16_t)Math::round(g * 65535);
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c <<= 16;
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c |= (uint16_t)Math::round(r * 65535);
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return c;
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}
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uint64_t Color::to_argb64() const {
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uint64_t c = (uint16_t)Math::round(a * 65535);
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c <<= 16;
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c |= (uint16_t)Math::round(r * 65535);
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c <<= 16;
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c |= (uint16_t)Math::round(g * 65535);
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c <<= 16;
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c |= (uint16_t)Math::round(b * 65535);
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return c;
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}
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uint64_t Color::to_rgba64() const {
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uint64_t c = (uint16_t)Math::round(r * 65535);
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c <<= 16;
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c |= (uint16_t)Math::round(g * 65535);
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c <<= 16;
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c |= (uint16_t)Math::round(b * 65535);
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c <<= 16;
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c |= (uint16_t)Math::round(a * 65535);
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return c;
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}
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float Color::get_h() const {
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float min = MIN(r, g);
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min = MIN(min, b);
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float max = MAX(r, g);
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max = MAX(max, b);
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float delta = max - min;
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if (delta == 0) {
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return 0;
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}
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float h;
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if (r == max) {
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h = (g - b) / delta; // between yellow & magenta
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} else if (g == max) {
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h = 2 + (b - r) / delta; // between cyan & yellow
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} else {
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h = 4 + (r - g) / delta; // between magenta & cyan
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}
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h /= 6.0;
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if (h < 0) {
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h += 1.0;
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}
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return h;
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}
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float Color::get_s() const {
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float min = MIN(r, g);
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min = MIN(min, b);
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float max = MAX(r, g);
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max = MAX(max, b);
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float delta = max - min;
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return (max != 0) ? (delta / max) : 0;
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}
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float Color::get_v() const {
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float max = MAX(r, g);
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max = MAX(max, b);
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return max;
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}
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void Color::set_hsv(float p_h, float p_s, float p_v, float p_alpha) {
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int i;
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float f, p, q, t;
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a = p_alpha;
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if (p_s == 0) {
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// acp_hromatic (grey)
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r = g = b = p_v;
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return;
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}
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p_h *= 6.0;
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p_h = Math::fmod(p_h, 6);
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i = Math::floor(p_h);
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f = p_h - i;
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p = p_v * (1 - p_s);
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q = p_v * (1 - p_s * f);
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t = p_v * (1 - p_s * (1 - f));
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switch (i) {
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case 0: // Red is the dominant color
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r = p_v;
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g = t;
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b = p;
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break;
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case 1: // Green is the dominant color
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r = q;
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g = p_v;
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b = p;
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break;
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case 2:
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r = p;
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g = p_v;
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b = t;
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break;
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case 3: // Blue is the dominant color
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r = p;
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g = q;
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b = p_v;
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break;
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case 4:
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r = t;
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g = p;
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b = p_v;
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break;
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default: // (5) Red is the dominant color
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r = p_v;
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g = p;
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b = q;
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break;
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}
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}
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bool Color::is_equal_approx(const Color &p_color) const {
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return Math::is_equal_approx(r, p_color.r) && Math::is_equal_approx(g, p_color.g) && Math::is_equal_approx(b, p_color.b) && Math::is_equal_approx(a, p_color.a);
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}
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void Color::invert() {
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r = 1.0 - r;
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g = 1.0 - g;
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b = 1.0 - b;
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}
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void Color::contrast() {
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r = Math::fmod(r + 0.5, 1.0);
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g = Math::fmod(g + 0.5, 1.0);
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b = Math::fmod(b + 0.5, 1.0);
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}
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Color Color::hex(uint32_t p_hex) {
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float a = (p_hex & 0xFF) / 255.0;
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p_hex >>= 8;
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float b = (p_hex & 0xFF) / 255.0;
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p_hex >>= 8;
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float g = (p_hex & 0xFF) / 255.0;
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p_hex >>= 8;
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float r = (p_hex & 0xFF) / 255.0;
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return Color(r, g, b, a);
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}
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Color Color::hex64(uint64_t p_hex) {
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float a = (p_hex & 0xFFFF) / 65535.0;
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p_hex >>= 16;
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float b = (p_hex & 0xFFFF) / 65535.0;
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p_hex >>= 16;
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float g = (p_hex & 0xFFFF) / 65535.0;
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p_hex >>= 16;
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float r = (p_hex & 0xFFFF) / 65535.0;
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return Color(r, g, b, a);
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}
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Color Color::from_rgbe9995(uint32_t p_rgbe) {
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float r = p_rgbe & 0x1ff;
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float g = (p_rgbe >> 9) & 0x1ff;
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float b = (p_rgbe >> 18) & 0x1ff;
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float e = (p_rgbe >> 27);
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float m = Math::pow(2, e - 15.0 - 9.0);
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float rd = r * m;
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float gd = g * m;
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float bd = b * m;
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return Color(rd, gd, bd, 1.0f);
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}
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static float _parse_col(const String &p_str, int p_ofs) {
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int ig = 0;
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for (int i = 0; i < 2; i++) {
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int c = p_str[i + p_ofs];
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int v = 0;
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if (c >= '0' && c <= '9') {
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v = c - '0';
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} else if (c >= 'a' && c <= 'f') {
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v = c - 'a';
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v += 10;
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} else if (c >= 'A' && c <= 'F') {
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v = c - 'A';
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v += 10;
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} else {
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return -1;
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}
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if (i == 0) {
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ig += v * 16;
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} else {
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ig += v;
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}
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}
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return ig;
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}
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Color Color::inverted() const {
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Color c = *this;
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c.invert();
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return c;
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}
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Color Color::contrasted() const {
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Color c = *this;
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c.contrast();
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return c;
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}
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Color Color::html(const String &p_color) {
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String color = p_color;
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if (color.length() == 0) {
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return Color();
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}
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if (color[0] == '#') {
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color = color.substr(1, color.length() - 1);
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}
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if (color.length() == 3 || color.length() == 4) {
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String exp_color;
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for (int i = 0; i < color.length(); i++) {
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exp_color += color[i];
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exp_color += color[i];
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}
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color = exp_color;
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}
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bool alpha = false;
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if (color.length() == 8) {
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alpha = true;
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} else if (color.length() == 6) {
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alpha = false;
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} else {
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ERR_FAIL_V_MSG(Color(), "Invalid color code: " + p_color + ".");
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}
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int a = 255;
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if (alpha) {
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a = _parse_col(color, 0);
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ERR_FAIL_COND_V_MSG(a < 0, Color(), "Invalid color code: " + p_color + ".");
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}
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int from = alpha ? 2 : 0;
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int r = _parse_col(color, from + 0);
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ERR_FAIL_COND_V_MSG(r < 0, Color(), "Invalid color code: " + p_color + ".");
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int g = _parse_col(color, from + 2);
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ERR_FAIL_COND_V_MSG(g < 0, Color(), "Invalid color code: " + p_color + ".");
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int b = _parse_col(color, from + 4);
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ERR_FAIL_COND_V_MSG(b < 0, Color(), "Invalid color code: " + p_color + ".");
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return Color(r / 255.0, g / 255.0, b / 255.0, a / 255.0);
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}
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bool Color::html_is_valid(const String &p_color) {
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String color = p_color;
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if (color.length() == 0) {
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return false;
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}
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if (color[0] == '#') {
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color = color.substr(1, color.length() - 1);
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}
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bool alpha = false;
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if (color.length() == 8) {
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alpha = true;
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} else if (color.length() == 6) {
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alpha = false;
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} else {
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return false;
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}
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if (alpha) {
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int a = _parse_col(color, 0);
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if (a < 0) {
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return false;
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}
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}
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int from = alpha ? 2 : 0;
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int r = _parse_col(color, from + 0);
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if (r < 0) {
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return false;
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}
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int g = _parse_col(color, from + 2);
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if (g < 0) {
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return false;
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}
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int b = _parse_col(color, from + 4);
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if (b < 0) {
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return false;
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}
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return true;
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}
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Color Color::named(const String &p_name) {
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if (_named_colors.empty()) {
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_populate_named_colors(); // from color_names.inc
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}
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String name = p_name;
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// Normalize name
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name = name.replace(" ", "");
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name = name.replace("-", "");
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name = name.replace("_", "");
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name = name.replace("'", "");
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name = name.replace(".", "");
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name = name.to_lower();
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const Map<String, Color>::Element *color = _named_colors.find(name);
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ERR_FAIL_NULL_V_MSG(color, Color(), "Invalid color name: " + p_name + ".");
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return color->value();
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}
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String _to_hex(float p_val) {
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int v = Math::round(p_val * 255);
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v = CLAMP(v, 0, 255);
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String ret;
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for (int i = 0; i < 2; i++) {
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CharType c[2] = { 0, 0 };
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int lv = v & 0xF;
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if (lv < 10) {
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c[0] = '0' + lv;
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} else {
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c[0] = 'a' + lv - 10;
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}
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v >>= 4;
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String cs = (const CharType *)c;
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ret = cs + ret;
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}
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return ret;
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}
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String Color::to_html(bool p_alpha) const {
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String txt;
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txt += _to_hex(r);
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txt += _to_hex(g);
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txt += _to_hex(b);
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if (p_alpha) {
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txt = _to_hex(a) + txt;
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}
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return txt;
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}
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Color Color::from_hsv(float p_h, float p_s, float p_v, float p_a) const {
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p_h = Math::fmod(p_h * 360.0f, 360.0f);
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if (p_h < 0.0) {
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p_h += 360.0f;
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}
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const float h_ = p_h / 60.0f;
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const float c = p_v * p_s;
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const float x = c * (1.0f - Math::abs(Math::fmod(h_, 2.0f) - 1.0f));
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float r, g, b;
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switch ((int)h_) {
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case 0: {
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r = c;
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g = x;
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b = 0;
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} break;
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case 1: {
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r = x;
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g = c;
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b = 0;
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} break;
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case 2: {
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r = 0;
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g = c;
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b = x;
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} break;
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case 3: {
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r = 0;
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g = x;
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b = c;
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} break;
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case 4: {
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r = x;
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g = 0;
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b = c;
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} break;
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case 5: {
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r = c;
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g = 0;
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b = x;
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} break;
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default: {
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r = 0;
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g = 0;
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b = 0;
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} break;
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}
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const float m = p_v - c;
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return Color(m + r, m + g, m + b, p_a);
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}
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Color::operator String() const {
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return rtos(r) + ", " + rtos(g) + ", " + rtos(b) + ", " + rtos(a);
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}
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Color Color::operator+(const Color &p_color) const {
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return Color(
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r + p_color.r,
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g + p_color.g,
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b + p_color.b,
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a + p_color.a);
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}
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Color Color::operator-(const Color &p_color) const {
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return Color(
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r - p_color.r,
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g - p_color.g,
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b - p_color.b,
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a - p_color.a);
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}
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void Color::operator-=(const Color &p_color) {
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r = r - p_color.r;
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g = g - p_color.g;
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b = b - p_color.b;
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a = a - p_color.a;
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}
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Color Color::operator*(const Color &p_color) const {
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return Color(
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r * p_color.r,
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g * p_color.g,
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b * p_color.b,
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a * p_color.a);
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}
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Color Color::operator*(const real_t &rvalue) const {
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return Color(
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r * rvalue,
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g * rvalue,
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b * rvalue,
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a * rvalue);
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}
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void Color::operator*=(const Color &p_color) {
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r = r * p_color.r;
|
|
g = g * p_color.g;
|
|
b = b * p_color.b;
|
|
a = a * p_color.a;
|
|
}
|
|
|
|
void Color::operator*=(const real_t &rvalue) {
|
|
r = r * rvalue;
|
|
g = g * rvalue;
|
|
b = b * rvalue;
|
|
a = a * rvalue;
|
|
}
|
|
|
|
Color Color::operator/(const Color &p_color) const {
|
|
return Color(
|
|
r / p_color.r,
|
|
g / p_color.g,
|
|
b / p_color.b,
|
|
a / p_color.a);
|
|
}
|
|
|
|
Color Color::operator/(const real_t &rvalue) const {
|
|
return Color(
|
|
r / rvalue,
|
|
g / rvalue,
|
|
b / rvalue,
|
|
a / rvalue);
|
|
}
|
|
|
|
void Color::operator/=(const Color &p_color) {
|
|
r = r / p_color.r;
|
|
g = g / p_color.g;
|
|
b = b / p_color.b;
|
|
a = a / p_color.a;
|
|
}
|
|
|
|
void Color::operator/=(const real_t &rvalue) {
|
|
if (rvalue == 0) {
|
|
r = 1.0;
|
|
g = 1.0;
|
|
b = 1.0;
|
|
a = 1.0;
|
|
} else {
|
|
r = r / rvalue;
|
|
g = g / rvalue;
|
|
b = b / rvalue;
|
|
a = a / rvalue;
|
|
}
|
|
};
|
|
|
|
Color Color::operator-() const {
|
|
return Color(
|
|
1.0 - r,
|
|
1.0 - g,
|
|
1.0 - b,
|
|
1.0 - a);
|
|
}
|