blend two Colors by ratio - Android Graphics

Android examples for Graphics:Color Blend

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Description

blend two Colors by ratio

Demo Code


//package com.java2s;

public class Main {
    public static int blendColors(int a, int b, float ratio) {
        if (ratio > 1f) {
            ratio = 1f;/* w  w  w .java 2s  .  c o m*/
        } else if (ratio < 0f) {
            ratio = 0f;
        }
        float iRatio = 1.0f - ratio;

        int aA = (a >> 24 & 0xff);
        int aR = ((a & 0xff0000) >> 16);
        int aG = ((a & 0xff00) >> 8);
        int aB = (a & 0xff);

        int bA = (b >> 24 & 0xff);
        int bR = ((b & 0xff0000) >> 16);
        int bG = ((b & 0xff00) >> 8);
        int bB = (b & 0xff);

        int A = (int) ((aA * iRatio) + (bA * ratio));
        int R = (int) ((aR * iRatio) + (bR * ratio));
        int G = (int) ((aG * iRatio) + (bG * ratio));
        int B = (int) ((aB * iRatio) + (bB * ratio));

        return A << 24 | R << 16 | G << 8 | B;
    }
}

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