Example usage for android.graphics Matrix preRotate

Introduction

In this page you can find the example usage for android.graphics Matrix preRotate.

Prototype

public boolean preRotate(float degrees) 

Source Link

Document

Preconcats the matrix with the specified rotation.

Usage

From source file:com.jiahuan.svgmapview.core.helper.map.SVGParser.java

private static Matrix parseTransformItem(String s, Matrix matrix) {
    if (s.startsWith("matrix(")) {
        NumberParse np = parseNumbers(s.substring("matrix(".length()));
        if (np.numbers.size() == 6) {
            Matrix mat = new Matrix();
            mat.setValues(new float[] {
                    // Row 1
                    np.numbers.get(0), np.numbers.get(2), np.numbers.get(4),
                    // Row 2
                    np.numbers.get(1), np.numbers.get(3), np.numbers.get(5),
                    // Row 3
                    0, 0, 1, });//from   w  w w . j  ava2  s.  com
            matrix.preConcat(mat);
        }
    } else if (s.startsWith("translate(")) {
        NumberParse np = parseNumbers(s.substring("translate(".length()));
        if (np.numbers.size() > 0) {
            float tx = np.numbers.get(0);
            float ty = 0;
            if (np.numbers.size() > 1) {
                ty = np.numbers.get(1);
            }
            matrix.preTranslate(tx, ty);
        }
    } else if (s.startsWith("scale(")) {
        NumberParse np = parseNumbers(s.substring("scale(".length()));
        if (np.numbers.size() > 0) {
            float sx = np.numbers.get(0);
            float sy = sx;
            if (np.numbers.size() > 1) {
                sy = np.numbers.get(1);
            }
            matrix.preScale(sx, sy);
        }
    } else if (s.startsWith("skewX(")) {
        NumberParse np = parseNumbers(s.substring("skewX(".length()));
        if (np.numbers.size() > 0) {
            float angle = np.numbers.get(0);
            matrix.preSkew((float) Math.tan(angle), 0);
        }
    } else if (s.startsWith("skewY(")) {
        NumberParse np = parseNumbers(s.substring("skewY(".length()));
        if (np.numbers.size() > 0) {
            float angle = np.numbers.get(0);
            matrix.preSkew(0, (float) Math.tan(angle));
        }
    } else if (s.startsWith("rotate(")) {
        NumberParse np = parseNumbers(s.substring("rotate(".length()));
        if (np.numbers.size() > 0) {
            float angle = np.numbers.get(0);
            float cx = 0;
            float cy = 0;
            if (np.numbers.size() > 2) {
                cx = np.numbers.get(1);
                cy = np.numbers.get(2);
            }
            matrix.preTranslate(-cx, -cy);
            matrix.preRotate(angle);
            matrix.preTranslate(cx, cy);
        }
    } else {
        Log.w(TAG, "Invalid transform (" + s + ")");
    }
    return matrix;
}

---

From source file:com.larvalabs.svgandroid.SVGParser.java

private static Matrix parseTransformItem(String s, Matrix matrix) {
    if (s.startsWith("matrix(")) {
        NumberParse np = parseNumbers(s.substring("matrix(".length()));
        if (np.numbers.size() == 6) {
            Matrix mat = new Matrix();
            mat.setValues(new float[] {
                    // Row 1
                    np.numbers.get(0), np.numbers.get(2), np.numbers.get(4),
                    // Row 2
                    np.numbers.get(1), np.numbers.get(3), np.numbers.get(5),
                    // Row 3
                    0, 0, 1, });/*from  w  ww.jav a  2  s . com*/
            matrix.preConcat(mat);
        }
    } else if (s.startsWith("translate(")) {
        NumberParse np = parseNumbers(s.substring("translate(".length()));
        if (np.numbers.size() > 0) {
            float tx = np.numbers.get(0);
            float ty = 0;
            if (np.numbers.size() > 1) {
                ty = np.numbers.get(1);
            }
            matrix.preTranslate(tx, ty);
        }
    } else if (s.startsWith("scale(")) {
        NumberParse np = parseNumbers(s.substring("scale(".length()));
        if (np.numbers.size() > 0) {
            float sx = np.numbers.get(0);
            float sy = sx;
            if (np.numbers.size() > 1) {
                sy = np.numbers.get(1);
            }
            matrix.preScale(sx, sy);
        }
    } else if (s.startsWith("skewX(")) {
        NumberParse np = parseNumbers(s.substring("skewX(".length()));
        if (np.numbers.size() > 0) {
            float angle = np.numbers.get(0);
            matrix.preSkew((float) Math.tan(angle), 0);
        }
    } else if (s.startsWith("skewY(")) {
        NumberParse np = parseNumbers(s.substring("skewY(".length()));
        if (np.numbers.size() > 0) {
            float angle = np.numbers.get(0);
            matrix.preSkew(0, (float) Math.tan(angle));
        }
    } else if (s.startsWith("rotate(")) {
        NumberParse np = parseNumbers(s.substring("rotate(".length()));
        if (np.numbers.size() > 0) {
            float angle = np.numbers.get(0);
            float cx = 0;
            float cy = 0;
            if (np.numbers.size() > 2) {
                cx = np.numbers.get(1);
                cy = np.numbers.get(2);
            }
            matrix.preTranslate(cx, cy);
            matrix.preRotate(angle);
            matrix.preTranslate(-cx, -cy);
        }
    } else {
        Log.i(TAG, "Invalid transform (" + s + ")");
    }
    return matrix;
}

---

• «
• 1
• 2
• 3
• »