27
28 import javafx.beans.property.DoubleProperty;
29 import javafx.beans.property.DoublePropertyBase;
30 import javafx.beans.property.ObjectProperty;
31 import javafx.beans.property.ObjectPropertyBase;
32 import javafx.geometry.Point3D;
33
34 import com.sun.javafx.geom.transform.Affine3D;
35 import com.sun.javafx.geom.transform.BaseTransform;
36 import javafx.geometry.Point2D;
37
38
39 /**
40 * This class represents an {@code Affine} object that rotates coordinates
41 * around an anchor point. This operation is equivalent to translating the
42 * coordinates so that the anchor point is at the origin (S1), then rotating them
43 * about the new origin (S2), and finally translating so that the
44 * intermediate origin is restored to the coordinates of the original
45 * anchor point (S3).
46 * <p>
47 * For example, the matrix representing the returned transform of
48 * new Rotate (theta, x, y, z) around the Z-axis
49 *
50 * is :
51 * <pre>
52 * [ cos(theta) -sin(theta) 0 x-x*cos+y*sin ]
53 * [ sin(theta) cos(theta) 0 y-x*sin-y*cos ]
54 * [ 0 0 1 z ]
55 * </pre>
56 * <p>
57 * For example, to rotate a text 30 degrees around the Z-axis at
58 * anchor point of (50,30):
59 * <pre>{@code
60 * Text text = new Text("This is a test");
61 * text.setX(10);
62 * text.setY(50);
63 * text.setFont(new Font(20));
64 *
65 * text.getTransforms().add(new Rotate(30, 50, 30));
66 * }</pre>
67 *
68 * @since JavaFX 2.0
69 */
70
71 public class Rotate extends Transform {
72
73 /**
74 * Specifies the X-axis as the axis of rotation.
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27
28 import javafx.beans.property.DoubleProperty;
29 import javafx.beans.property.DoublePropertyBase;
30 import javafx.beans.property.ObjectProperty;
31 import javafx.beans.property.ObjectPropertyBase;
32 import javafx.geometry.Point3D;
33
34 import com.sun.javafx.geom.transform.Affine3D;
35 import com.sun.javafx.geom.transform.BaseTransform;
36 import javafx.geometry.Point2D;
37
38
39 /**
40 * This class represents an {@code Affine} object that rotates coordinates
41 * around an anchor point. This operation is equivalent to translating the
42 * coordinates so that the anchor point is at the origin (S1), then rotating them
43 * about the new origin (S2), and finally translating so that the
44 * intermediate origin is restored to the coordinates of the original
45 * anchor point (S3).
46 * <p>
47 * The matrix representing the rotation transformation around an axis {@code (x,y,z)}
48 * by an angle {@code t} is as follows:
49 * <pre>
50 * [ cos(t) -sin(t) 0 x-x*cos(t)+y*sin(t) ]
51 * [ sin(t) cos(t) 0 y-x*sin(t)-y*cos(t) ]
52 * [ 0 0 1 z ]
53 * </pre>
54 * <p>
55 * For example, to rotate a text 30 degrees around the Z-axis at
56 * anchor point of (50,30):
57 * <pre>{@code
58 * Text text = new Text("This is a test");
59 * text.setX(10);
60 * text.setY(50);
61 * text.setFont(new Font(20));
62 *
63 * text.getTransforms().add(new Rotate(30, 50, 30));
64 * }</pre>
65 *
66 * @since JavaFX 2.0
67 */
68
69 public class Rotate extends Transform {
70
71 /**
72 * Specifies the X-axis as the axis of rotation.
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