Examples of java.awt.geom.AffineTransform.rotate()

java.awt.geom.AffineTransform.rotate()
Concatenates this transform with a rotation transformation. This is equivalent to calling concatenate(R), where R is an AffineTransform represented by the following matrix:
```
 [   cos(theta)    -sin(theta)    0   ] [   sin(theta)     cos(theta)    0   ] [       0              0         1   ] 
```
Rotating by a positive angle theta rotates points on the positive X axis toward the positive Y axis. Note also the discussion of Handling 90-Degree Rotations above. @param theta the angle of rotation measured in radians @since 1.2

    /**
     * Implements {@link SVGMatrix#rotate(float)}.
     */
    public SVGMatrix rotate(float angle) {
        AffineTransform tr = (AffineTransform)getAffineTransform().clone();
        tr.rotate(angle);
        return new SVGOMMatrix(tr);
    }


    /**
     * Implements {@link SVGMatrix#rotateFromVector(float,float)}.

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    public SVGMatrix rotateFromVector(float x, float y) throws SVGException {
        if (x == 0 || y == 0) {
            throw new SVGOMException(SVGException.SVG_INVALID_VALUE_ERR, "");
        }
        AffineTransform tr = (AffineTransform)getAffineTransform().clone();
        tr.rotate(Math.atan2(y, x));
        return new SVGOMMatrix(tr);
    }


    /**
     * Implements {@link SVGMatrix#flipX()}.

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            if (glyphRotation != 0f) {
                AffineTransform glyphTransform = gv.getGlyphTransform(i);
                if (glyphTransform == null) {
                    glyphTransform = new AffineTransform();
                }
                glyphTransform.rotate(glyphRotation);
                gv.setGlyphTransform(i, glyphTransform);
            }


            aciIndex += gv.getCharacterCount(i,i);
            if (aciIndex >= charMap.length)

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                // Define the transform of the glyph
                AffineTransform glyphPathTransform = new AffineTransform();


                // rotate midline of glyph to be normal to path
                if (horizontal) {
                    glyphPathTransform.rotate(angle);
                } else {
                    glyphPathTransform.rotate(angle-(Math.PI/2));
                }


                // re-apply any offset eg from tspan, or spacing adjust

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                // rotate midline of glyph to be normal to path
                if (horizontal) {
                    glyphPathTransform.rotate(angle);
                } else {
                    glyphPathTransform.rotate(angle-(Math.PI/2));
                }


                // re-apply any offset eg from tspan, or spacing adjust
                if (horizontal) {
                    glyphPathTransform.translate(0, glyphOffset);

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                                float width = (float)layout.getBounds().getWidth();
                                float height = (float)layout.getBounds().getHeight();


                                AffineTransform textAt = new AffineTransform();
                                textAt.translate( x, y);
                                textAt.rotate(Math.toRadians(270));
                                textAt.translate(0, height);
                                Shape shape = layout.getOutline(textAt);
                                gp.append( at.createTransformedShape( shape )/*layout.getOutline( null ))*/, false );
                                g2.draw( shape );
                            }

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        txf.translate(markerPosition.getX() - ref.getX(),
                      markerPosition.getY() - ref.getY());


        if (!Double.isNaN(rotation)) {
            txf.rotate(rotation*Math.PI/180., ref.getX(), ref.getY());
        }


        return txf;
    }

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        txf.translate(markerPosition.getX() - ref.getX(),
                      markerPosition.getY() - ref.getY());


        if (!Double.isNaN(rotation)) {
            txf.rotate(rotation*Math.PI/180., ref.getX(), ref.getY());
        }


        return txf;
    }

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            if (glyphRotation != 0f) {
                AffineTransform glyphTransform = gv.getGlyphTransform(i);
                if (glyphTransform == null) {
                    glyphTransform = new AffineTransform();
                }
                glyphTransform.rotate(glyphRotation);
                gv.setGlyphTransform(i, glyphTransform);
            }


            aciIndex += gv.getCharacterCount(i,i);
            ch = aci.setIndex(aciIndex);

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                // Define the transform of the glyph
                AffineTransform glyphPathTransform = new AffineTransform();


                // rotate midline of glyph to be normal to path
                if (horizontal) {
                    glyphPathTransform.rotate(angle);
                } else {
                    glyphPathTransform.rotate(angle-(Math.PI/2));
                }


                // re-apply any offset eg from tspan, or spacing adjust

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