jcckit.renderer
Class Transformation

java.lang.Object
  jcckit.renderer.Transformation

public class Transformation

extends java.lang.Object

Transformation between device-independent coordinates and standard Java coordinates. The aspect-ratio will be the same. The position in the canvas is determined by a Rectangle defining a (virtual) paper which is placed in the canvas according to an anchor point. Depending on the aspect ratio of the canvas the paper width or height occupies the canvas width or height.

Author:

Franz-Josef Elmer

Constructor Summary

Transformation(int width, int height, ClippingRectangle paper, Anchor horizontalAnchor, Anchor verticalAnchor)
Creates an instance for the specified canvas size, paper size, and anchor points of the paper.

Method Summary

GraphPoint	transformBack(int x, int y) Transforms a point in Java coordinates back into device-independent coordinates.
int	transformHeight(double height) Transforms the device-independent height into Java height.
int	transformWidth(double width) Transforms the device-independent width into Java width.
int	transformX(double x) Transforms the device-independent x coordinate into Java coordinates.
int	transformY(double y) Transforms the device-independent y coordinate into Java coordinates.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Transformation

public Transformation(int width,
                      int height,
                      ClippingRectangle paper,
                      Anchor horizontalAnchor,
                      Anchor verticalAnchor)

Creates an instance for the specified canvas size, paper size, and anchor points of the paper.

Parameters:

width - Width of the canvas.

height - Height of the canvas.

paper - Rectangle defining the paper in device-independent coordinates.

horizontalAnchor - Horizontal anchor of the paper in the canvas.

verticalAnchor - Vertical anchor of the paper in the canvas.

Method Detail

transformX

public int transformX(double x)

Transforms the device-independent x coordinate into Java coordinates.

transformY

public int transformY(double y)

Transforms the device-independent y coordinate into Java coordinates.

transformWidth

public int transformWidth(double width)

Transforms the device-independent width into Java width.

transformHeight

public int transformHeight(double height)

Transforms the device-independent height into Java height.

transformBack

public GraphPoint transformBack(int x,
                                int y)

Transforms a point in Java coordinates back into device-independent coordinates.