mirror of
https://github.com/godotengine/godot.git
synced 2024-12-21 10:25:24 +08:00
2a55f10e8b
- replace OpenSimplexNoise Co-authored-by: Cory Petkovsek <tinmanjuggernaut@users.noreply.github.com>
69 lines
3.8 KiB
C++
69 lines
3.8 KiB
C++
/*************************************************************************/
|
|
/* noise.cpp */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
|
|
/* Copyright (c) 2014-2022 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, */
|
|
/* distribute, sublicense, and/or sell copies of the Software, and to */
|
|
/* 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 */
|
|
/* included in all copies or substantial portions of the Software. */
|
|
/* */
|
|
/* 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.*/
|
|
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
|
|
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
|
|
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
|
|
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
/*************************************************************************/
|
|
|
|
#include "noise.h"
|
|
|
|
Ref<Image> Noise::get_seamless_image(int p_width, int p_height, bool p_invert, real_t p_blend_skirt) {
|
|
int skirt_width = p_width * p_blend_skirt;
|
|
int skirt_height = p_height * p_blend_skirt;
|
|
int src_width = p_width + skirt_width;
|
|
int src_height = p_height + skirt_height;
|
|
|
|
Ref<Image> src = get_image(src_width, src_height, p_invert);
|
|
bool grayscale = (src->get_format() == Image::FORMAT_L8);
|
|
if (grayscale) {
|
|
return _generate_seamless_image<uint8_t>(src, p_width, p_height, p_invert, p_blend_skirt);
|
|
} else {
|
|
return _generate_seamless_image<uint32_t>(src, p_width, p_height, p_invert, p_blend_skirt);
|
|
}
|
|
}
|
|
|
|
// Template specialization for faster grayscale blending.
|
|
template <>
|
|
uint8_t Noise::_alpha_blend<uint8_t>(uint8_t p_bg, uint8_t p_fg, int p_alpha) const {
|
|
uint16_t alpha = p_alpha + 1;
|
|
uint16_t inv_alpha = 256 - p_alpha;
|
|
|
|
return (uint8_t)((alpha * p_fg + inv_alpha * p_bg) >> 8);
|
|
}
|
|
|
|
void Noise::_bind_methods() {
|
|
// Noise functions.
|
|
ClassDB::bind_method(D_METHOD("get_noise_1d", "x"), &Noise::get_noise_1d);
|
|
ClassDB::bind_method(D_METHOD("get_noise_2d", "x", "y"), &Noise::get_noise_2d);
|
|
ClassDB::bind_method(D_METHOD("get_noise_2dv", "v"), &Noise::get_noise_2dv);
|
|
ClassDB::bind_method(D_METHOD("get_noise_3d", "x", "y", "z"), &Noise::get_noise_3d);
|
|
ClassDB::bind_method(D_METHOD("get_noise_3dv", "v"), &Noise::get_noise_3dv);
|
|
|
|
// Textures.
|
|
ClassDB::bind_method(D_METHOD("get_image", "width", "height", "invert"), &Noise::get_image, DEFVAL(false));
|
|
ClassDB::bind_method(D_METHOD("get_seamless_image", "width", "height", "invert", "skirt"), &Noise::get_seamless_image, DEFVAL(false), DEFVAL(0.1));
|
|
}
|