colormap-shaders
A collection of shaders to draw color map like this:
usage
Each *.frag shader sources provides a colormap function, which takes an float argument x (x should be: 0.0 <= x <= 1.0). The colormap function returns a vec4 value which represents an RGBA color.
vec4 colormap(float x);
void main() {
gl_FragColor = colormap(gl_TexCoord[0].x);
}
/* include "shaders/rainbow.frag" here, for example. */
special case
gnuplot.frag
This shader emulates gnuplot's rgbformulae, and the signature of colormap is:
vec4 colormap(float x, int red_type, int green_type, int blue_type);
It takes additional 3 arguments, with same meanings to rgbformulae's 3 arguments respectively.
usage from c++
#include <colormap/colormap.h>
#include <iostream>
int main()
{
using namespace colormap;
// Print RGB table of MATLAB::Jet colormap.
MATLAB::Jet jet;
std::cout << "category: " << jet.getCategory() << std::endl;
std::cout << "title: " << jet.getTitle() << std::endl;
int const size = 256;
for (int i = 0; i < size; ++i) {
float const x = i / (float)size;
Color c = jet.getColor(x);
std::cout << x << "\t" << c.r << "\t" << c.g << "\t" << c.b << std::endl;
}
// Dump category and title of all colormaps.
for (std::shared_ptr<Colormap const> const& c : ColormapList::getAll()) {
std::cout << c->getCategory() << " : " << c->getTitle() << std::endl;
}
return 0;
}
samples
MATLAB
| name | sample |
|---|---|
| MATLAB_autumn | |
| MATLAB_bone | |
| MATLAB_cool | |
| MATLAB_copper | |
| MATLAB_hot | |
| MATLAB_hsv | |
| MATLAB_jet | |
| MATLAB_parula | |
| MATLAB_pink | |
| MATLAB_spring | |
| MATLAB_summer | |
| MATLAB_winter |
gnuplot
| name | sample |
|---|---|
| rgbformulae(7, 5, 15) | |
| rgbformulae(3, 11, 6) | |
| rgbformulae(23, 28, 3) | |
| rgbformulae(21, 22, 23) | |
| rgbformulae(30, 31, 32) | |
| rgbformulae(33, 13, 10) | |
| rgbformulae(34, 35, 36) |
IDL
transform
transform
| name | sample |
|---|---|
| kbinani_altitude |
license
The MIT License. See 'LICENSE' file for detail.
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Generating Shaders From HLSL Fragments By Shawn Hargreaves Shaders are cool. You can do all sorts of interesting things with them: this and previous ShaderX books are full of examples. Alongside their
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问题内容： Seaborn提供了一个名为“调色板”的功能，可以让您轻松地 为绘图创建新的调色板。 我想将调色板转换为cmap，我可以在matplotlib中使用， 但我不明白我该怎么做。 不幸的是，像“cubehelix\u palete”，“light\u palete”这样的函数，有一个 “作为\u cmap”参数不幸的是，“调色板”没有。 问题答案： 你必须将一系列颜色从seaborn调色板
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我得到的错误要求没有定义。 我该怎么解决呢？我试图将带有colormap的js文件直接导入到html中（这样javascript文件就有了引用），但我找不到应该导入什么文件。