Example usage for android.graphics Color RGBToHSV

Introduction

In this page you can find the example usage for android.graphics Color RGBToHSV.

Prototype

public static void RGBToHSV(@IntRange(from = 0, to = 255) int red, @IntRange(from = 0, to = 255) int green,
        @IntRange(from = 0, to = 255) int blue, @Size(3) float hsv[]) 

Source Link

Document

Convert RGB components to HSV.

Usage

From source file:Main.java

public static int saturate(int color, float saturation) {
    float[] hsv = new float[3];
    Color.RGBToHSV(Color.red(color), Color.green(color), Color.blue(color), hsv);
    hsv[1] = saturation;/* w  ww .  j  ava  2s  . c  o  m*/
    return Color.HSVToColor(Color.alpha(color), hsv);
}

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From source file:Main.java

public static int brighten(int color, float brightness) {
    float[] hsv = new float[3];
    Color.RGBToHSV(Color.red(color), Color.green(color), Color.blue(color), hsv);
    hsv[2] = brightness;/*from ww  w.  j av  a  2  s.c o m*/
    return Color.HSVToColor(Color.alpha(color), hsv);
}

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From source file:Main.java

public static int shadeColor(int color, float shadeAmt) {
    float[] hsv = new float[3];
    Color.RGBToHSV(Color.red(color), Color.green(color), Color.blue(color), hsv);
    hsv[2] *= (1 - shadeAmt);/*from w w  w .j  a  v a  2s.c o m*/

    return Color.HSVToColor(hsv);
}

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From source file:Main.java

public static int getComplementaryColor(int colorToInvert) {
    float[] hsv = new float[3];
    Color.RGBToHSV(Color.red(colorToInvert), Color.green(colorToInvert), Color.blue(colorToInvert), hsv);
    hsv[0] = (hsv[0] + 180) % 360;/*from  w ww . java  2s  .  c  o m*/
    return Color.HSVToColor(hsv);
}

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From source file:Main.java

public static int getContrastVersionForColor(int color) {
    float[] hsv = new float[3];
    Color.RGBToHSV(Color.red(color), Color.green(color), Color.blue(color), hsv);
    if (hsv[2] < 0.5) {
        hsv[2] = 0.7f;/*from w  w w. j  av a 2  s . c o m*/
    } else {
        hsv[2] = 0.3f;
    }
    hsv[1] = hsv[1] * 0.2f;
    return Color.HSVToColor(hsv);
}

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From source file:Main.java

public static int saturateRelative(int color, float saturationOffset) {
    float[] hsv = new float[3];
    Color.RGBToHSV(Color.red(color), Color.green(color), Color.blue(color), hsv);
    hsv[1] += saturationOffset;//from w ww .  j  a v  a2 s . c om
    if (hsv[1] > 1.0f) {
        hsv[1] = 1.0f;
    } else if (hsv[1] < 0.0f) {
        hsv[1] = 0.0f;
    }
    return Color.HSVToColor(Color.alpha(color), hsv);
}

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From source file:Main.java

/**
 * @param R Red in range 0..255//from www. j a  v a 2 s  . co m
 * @param G Green in range 0..255
 * @param B Blue in range 0..255
 * @return HSB values: H is 0..360 degrees / 360 (0..1), S is 0..1, B is 0..1
 */
public static double[] RGBtoHSB(int R, int G, int B) {
    double[] result = new double[3];
    float[] hsb = new float[3];
    Color.RGBToHSV(R, G, B, hsb);
    result[0] = hsb[0];
    result[1] = hsb[1];
    result[2] = hsb[2];
    return result;
}

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From source file:Main.java

public static float colorToHSV(Context context, int colorResourceId) {

    int color = context.getResources().getColor(colorResourceId);

    int a = Color.alpha(color);
    int r = Color.red(color);
    int g = Color.green(color);
    int b = Color.blue(color);

    float[] hsv = new float[3];

    Color.RGBToHSV(r, g, b, hsv);

    return hsv[0];
}

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From source file:Main.java

/**
 * Change light value of a color./*w ww  . ja va 2 s  .co m*/
 * <p>
 * <b>Warning:</b> Removes alpha channel. Only pass colors with alpha = {@code 0xFF}.
 * </p>
 *
 * @param color      The {@link Color} {@code int} to use.
 * @param multiplier The {@code float} multiplier to apply to the light value.
 * @return A modified {@link Color} {@code int}.
 */
public static int enlightColor(int color, float multiplier) {
    float[] hsv = new float[3];
    Color.RGBToHSV(Color.red(color), Color.green(color), Color.blue(color), hsv);
    hsv[2] = hsv[2] * multiplier;
    return Color.HSVToColor(hsv);
}

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From source file:Main.java

public static int getComplementaryColor(int color) {
    float[] hsv = new float[3];
    Color.RGBToHSV(Color.red(color), Color.green(color), Color.blue(color), hsv);
    hsv[0] = (hsv[0] + 180) % 360;/*w w w.j a v  a2 s .  co  m*/
    return Color.HSVToColor(hsv);
}

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