Example usage for com.badlogic.gdx.math Matrix3 getValues

Introduction

In this page you can find the example usage for com.badlogic.gdx.math Matrix3 getValues.

Prototype

public float[] getValues() 

Source Link

Document

Get the values in this matrix.

Usage

From source file:magory.svg.Sovery.java

public void loadElement(Element el, float[] matrixOld) {
    String elname = el.getName();
    if (elname.equals("svg"))
        getSVGDimentions(el);//from ww  w.j a  v  a 2 s .co m

    int count = el.getChildCount();

    // magic for transforms and matrixes, don't touch unless you know what you are doing
    String trans = getAttribute(el, "transform", "", false);
    String title = getTitle(el);
    float elementX = getFloat(el.getAttribute("x", "0"));
    float elementY = getFloat(el.getAttribute("y", "0"));
    float elementWidth = getFloat(getAttribute(el, "width", "", false));
    float elementHeight = getFloat(getAttribute(el, "height", "", false));
    Vector2 origin = new Vector2(elementWidth / 2, elementHeight / 2);
    Vector2 scale = new Vector2(1, 1);
    Vector2 scaleOld = new Vector2(1, 1);
    Vector2 translate = new Vector2();
    float rr; // rotation

    Matrix3 matrix = getTransformMatrix(trans);
    float oldR = 0;
    if (matrixOld != null) // is a matrix
    {
        Matrix3 mOld = new Matrix3(matrixOld);
        oldR = mOld.getRotation();
        getScale(mOld, scaleOld);

        if (scaleOld.y < 0 || scaleOld.x < 0) {
            origin.rotate(oldR);
            matrix.mulLeft(translate(-origin.x, -origin.y));
            origin.rotate(-oldR);
            matrix.mulLeft(mOld);
            matrix.mul(translate(elementX, elementY));
            matrix.translate(origin.x, origin.y);
        } else {
            origin.rotate(-oldR);
            matrix.mulLeft(translate(-origin.x, -origin.y));
            origin.rotate(oldR);
            matrix.mulLeft(mOld);
            matrix.mul(translate(elementX, elementY));
            matrix.translate(origin.x, origin.y);
        }
    } else {
        matrix.mulLeft(translate(-origin.x, -origin.y));
        matrix.mul(translate(elementX, elementY));
        matrix.translate(origin.x, origin.y);
    }

    if (count != 0)
        for (int i = 0; i < count; i++)
            loadElement(el.getChild(i), matrix.getValues());

    // important magic for width,height and x,y
    // inspired by this: http://stackoverflow.com/questions/16359246/how-to-extract-position-rotation-and-scale-from-matrix-svg
    // and this: http://www.w3.org/TR/css3-transforms/

    matrix.getScale(scale);
    rr = matrix.getRotation();

    // magic which I don't understand
    getScale(matrix, scale);
    if (scale.y < 0 && scaleOld.y > 0) {
        Vector2 det = new Vector2(0, elementHeight * Math.signum(scale.y) * 2); // because y flip uses top border of the image 
        det.rotate(rr);
        matrix.translate(det);
    }

    if (scaleOld.y < 0 || scaleOld.x < 0) {
        Vector2 det = new Vector2(0, scaleOld.y * elementHeight / scale.y); // because... well, I don't know why
        if (scale.y < 0)
            det.rotate(rr + 180);
        else if (scale.x < 0)
            det.rotate(rr);
        else {
            if (scaleOld.x < 0)
                det.rotate(-rr + 180);
            else
                det.rotate(-rr);
        }

        matrix.translate(det);
    }

    matrix.getTranslation(translate);

    float width = elementWidth * scale.x;
    float height = elementHeight * scale.y;
    float yyy = SVGHeight - translate.y - height;
    float xxx = translate.x;

    if (title.startsWith("testing")) {
        Gdx.app.log("test", "oldR:" + oldR + " sx:" + scaleOld.x + " sy:" + scaleOld.y);
        Gdx.app.log("test", ":::" + title + ":" + xxx + "," + yyy + ":" + rr + " " + width + "x" + height
                + " rr:" + rr + " scalex:" + scale.x + " scaley:" + scale.y);
    }
    rr = -rr;
    if (width < 0)
        rr = rr + 180;
    if (rr < 0)
        rr += 360;

    if (title.startsWith("testing"))
        Gdx.app.log("test", ":::newrr:" + rr);

    if (elname.equals("path")) // path
    {
        String d = el.getAttribute("d", "");
        newPath(parsePathToArray(d, elementX, elementY, SVGHeight), el, title);
    } else if (isText(elname)) // text
    {
        Element e = getChild(el, "tspan");
        if (e == null)
            return;

        String text;
        if (e.getText() == null)
            text = "";
        else
            text = e.getText().trim();

        // font-size as height! - width not set unfortunately
        // example: font-size:44.03109741px;
        String style = getAttribute(el, "style", "", false);
        String styles[] = style.split("\\;");
        Color color = new Color(1, 1, 1, 1);
        if (styles != null && styles.length > 0) {
            for (int i = 0; i < styles.length; i++) {
                if (isStyle(styles[i], "font-size")) {
                    String stylesdata[] = styles[i].split("\\:");
                    stylesdata[1] = stylesdata[1].replace("px", "");
                    stylesdata[1] = stylesdata[1].replace(";", "");
                    height = getFloat(stylesdata[1].trim());
                } else if (isStyle(styles[i], "fill")) {
                    //fill:#effffa
                    String stylesdata[] = styles[i].split("\\:");
                    stylesdata[1] = stylesdata[1].replace("#", "");
                    stylesdata[1] = stylesdata[1].replace(";", "");
                    color = getColorFromString(stylesdata[1].trim());
                }
            }
        }
        newText(text, el, xxx, yyy, width, height, rr, color);
    } else if (isImage(elname)) // obraz
    {
        String name = getImageName(getAttribute(el, "xlink:href", "", false));
        newImage(name, el, xxx, yyy, width, height, rr);
    } else if (isRect(elname)) // obraz
    {
        Element title2 = getChild(el, "title");
        if (title2 != null)
            newRect(title2.getText(), el, xxx, yyy, width, height, rr);
        else
            newRect("", el, xxx, yyy, width, height, rr);
    }
}

---