How to map java's AffineTransform to android's Matrix?

user_426493 0
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Suppose I initialize an AffineTransform as below:

AffineTransform af = new AffineTransform(2, 3, 4, 5, 6, 7);

How would I create an equivalent Matrix using android's sdk?

android java
3 Answers

This is a demo Java code:

 public static float[] createMatrixValues(AffineTransform Tx) {
    double[] at = new double[9];
    Tx.getMatrix(at);
    float[] f = new float[at.length];
    f[0] = (float) at[0];
    f[1] = (float) at[2];
    f[2] = (float) at[4];
    f[3] = (float) at[1];
    f[4] = (float) at[3];
    f[5] = (float) at[5];
    f[6] = 0;
    f[7] = 0;
    f[8] = 1;
    return f;
}

and to create the Matrix object:

public static Matrix createMatrixObj(AffineTransform Tx) {
    Matrix m = new Matrix();
    m.reset();
    m.setValues(createMatrix(Tx));
    return m;
}

I hope this helper methods solves your question.

user_9315890
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