Color

A C++ utility library for color.

Contents

• Color
  • Contents
  • How to use
  • Usages
    • Supported colorspace
    • Conversion
    • Named Colors
    • Gradients
      • Gradient
      • StopColor
      • Gradient::StepMethod
    • Colormap

How to use

To use color, add the followings to your WORKSPACE file.

load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")

http_archive(
    name = "com_chokobole_color",
    sha256 = "<sha256>",
    strip_prefix = "color-<commit>",
    urls = [
        "https://github.com/chokobole/color/archive/<commit>.tar.gz",
    ],
)

load("@com_chokobole_base//bazel:base_deps.bzl", "base_deps")

base_deps()

load("@com_chokobole_bazel_utils//:buildifier_deps.bzl", "buildifier_deps")

buildifier_deps()

load("@com_chokobole_bazel_utils//:buildifier_deps_deps.bzl", "buildifier_deps_deps")

buildifier_deps_deps()

Then, in your BUILD files, import and use the rules.

load("@com_chokobole_color//bazel:color_cc.bzl", "color_copts")

cc_binary(
    name = "name",
    srcs = [...],
    copts = color_copts(),
    deps = ["@com_chokobole_color//:color"],
)

Usages

Supported colorspace

• Rgb
• Hsv

Conversion

• Hsv RgbToHsv(const Rgb& rgb)
• Rgb HsvToRgb(const Hsv& hsv)

Named Colors

There are already defined named colors listed in color_values. You can use like below.

color::Rgb rgb = kBlack;

Gradients

Gradient

• bool Colors(size_t numbers, std::vector<Rgb>* colors, StepMethod = STEP_METHOD_RGB) const

StopColor

Members

• Rgb color
• double tposition: Should be inside between 0 and 1.

Gradient::StepMethod

• STEP_METHOD_RGB: Interpolate between stop colors by RGB step method.
• STEP_METHOD_HSV_CW: Interpolate between stop colors by HSV clock wise step method.
• STEP_METHOD_HSV_CCW: Interpolate between stop colors by HSV counter clock wise step method.

For examples,

color::Gradient gradient({kBlack, kRed});
std::vector<color::Rgb> colors;
gradient.Color(5, &colors);

Colormap

For examples,

color::Colormap colormap;
std::vector<color::Rgb> colors;
colormap.Jet(24, &colors);

Methods

• bool Jet(size_t numbers, std::vector<Rgb>* colors) const
• bool Hsv(size_t numbers, std::vector<Rgb>* colors) const
• bool Hot(size_t numbers, std::vector<Rgb>* colors) const
• bool Cool(size_t numbers, std::vector<Rgb>* colors) const
• bool Spring(size_t numbers, std::vector<Rgb>* colors) const
• bool Summer(size_t numbers, std::vector<Rgb>* colors) const
• bool Autumn(size_t numbers, std::vector<Rgb>* colors) const
• bool Winter(size_t numbers, std::vector<Rgb>* colors) const
• bool Bone(size_t numbers, std::vector<Rgb>* colors) const
• bool Copper(size_t numbers, std::vector<Rgb>* colors) const
• bool Greys(size_t numbers, std::vector<Rgb>* colors) const
• bool Greens(size_t numbers, std::vector<Rgb>* colors) const
• bool BlueRed(size_t numbers, std::vector<Rgb>* colors) const
• bool YIGnBu(size_t numbers, std::vector<Rgb>* colors) const
• bool YIOrRd(size_t numbers, std::vector<Rgb>* colors) const
• bool RdBu(size_t numbers, std::vector<Rgb>* colors) const
• bool Picnic(size_t numbers, std::vector<Rgb>* colors) const
• bool Rainbow(size_t numbers, std::vector<Rgb>* colors) const
• bool RainbowSoft(size_t numbers, std::vector<Rgb>* colors) const
• bool Portland(size_t numbers, std::vector<Rgb>* colors) const
• bool BlackBody(size_t numbers, std::vector<Rgb>* colors) const
• bool Earth(size_t numbers, std::vector<Rgb>* colors) const
• bool Electric(size_t numbers, std::vector<Rgb>* colors) const
• bool Alpha(size_t numbers, std::vector<Rgb>* colors) const
• bool Viridis(size_t numbers, std::vector<Rgb>* colors) const
• bool Inferno(size_t numbers, std::vector<Rgb>* colors) const
• bool Magma(size_t numbers, std::vector<Rgb>* colors) const
• bool Plasma(size_t numbers, std::vector<Rgb>* colors) const
• bool Warm(size_t numbers, std::vector<Rgb>* colors) const
• bool Bathymetry(size_t numbers, std::vector<Rgb>* colors) const
• bool CDOM(size_t numbers, std::vector<Rgb>* colors) const
• bool Chlorophyll(size_t numbers, std::vector<Rgb>* colors) const
• bool Density(size_t numbers, std::vector<Rgb>* colors) const
• bool FreeSurface_Blue(size_t numbers, std::vector<Rgb>* colors) const
• bool FreeSurface_Red(size_t numbers, std::vector<Rgb>* colors) const
• bool Oxygen(size_t numbers, std::vector<Rgb>* colors) const
• bool Par(size_t numbers, std::vector<Rgb>* colors) const
• bool Phase(size_t numbers, std::vector<Rgb>* colors) const
• bool Salinity(size_t numbers, std::vector<Rgb>* colors) const
• bool Temperature(size_t numbers, std::vector<Rgb>* colors) const
• bool Turbidity(size_t numbers, std::vector<Rgb>* colors) const
• bool Velocity_Blue(size_t numbers, std::vector<Rgb>* colors) const
• bool Velocity_Green(size_t numbers, std::vector<Rgb>* colors) const
• bool Cubehelix(size_t numbers, std::vector<Rgb>* colors) const