interpolatedtextlabel.java

一个很好的java2d小程序的源码

package wt;
// Decompiled by Jad v1.5.8e. Copyright 2001 Pavel Kouznetsov.
// Jad home page: http://www.geocities.com/kpdus/jad.html
// Decompiler options: packimports(3) 
// Source File Name:   InterpolatedTextLabel.java

import java.awt.geom.AffineTransform;

public class InterpolatedTextLabel extends TransformedTextLabel
{

    public InterpolatedTextLabel(String text, AffineTransform first, AffineTransform second)
    {
        super(text);
        mFirstMatrix = new double[6];
        mSecondMatrix = new double[6];
        setFirst(first);
        setSecond(second);
    }

    public InterpolatedTextLabel(String text)
    {
        this(text, null, null);
    }

    public InterpolatedTextLabel()
    {
        this("");
    }

    public AffineTransform getFirst()
    {
        return mFirst;
    }

    public AffineTransform getSecond()
    {
        return mSecond;
    }

    public void setFirst(AffineTransform first)
    {
        if(first == null)
            first = new AffineTransform();
        mFirst = first;
        mFirst.getMatrix(mFirstMatrix);
        invalidateTransforms();
    }

    public void setSecond(AffineTransform second)
    {
        if(second == null)
            second = new AffineTransform();
        mSecond = second;
        mSecond.getMatrix(mSecondMatrix);
        invalidateTransforms();
    }

    protected AffineTransform computeTransform(int i)
    {
        double d = getCharDist(i);
        double t2 = d / getTextDist();
        double t1 = 1.0D - t2;
        return new AffineTransform(mFirstMatrix[0] * t1 + mSecondMatrix[0] * t2, mFirstMatrix[1] * t1 + mSecondMatrix[1] * t2, mFirstMatrix[2] * t1 + mSecondMatrix[2] * t2, mFirstMatrix[3] * t1 + mSecondMatrix[3] * t2, mFirstMatrix[4] * t1 + mSecondMatrix[4] * t2 + d, mFirstMatrix[5] * t1 + mSecondMatrix[5] * t2);
    }

    public static InterpolatedTextLabel createRotatedText(String text, double angle1, double angle2)
    {
        AffineTransform a1 = AffineTransform.getRotateInstance(angle1);
        AffineTransform a2 = AffineTransform.getRotateInstance(angle2);
        return new InterpolatedTextLabel(text, a1, a2);
    }

    public static InterpolatedTextLabel createScaledText(String text, double scale1, double scale2)
    {
        AffineTransform a1 = AffineTransform.getScaleInstance(1.0D, scale1);
        AffineTransform a2 = AffineTransform.getScaleInstance(1.0D, scale2);
        return new InterpolatedTextLabel(text, a1, a2);
    }

    public static InterpolatedTextLabel createShearedText(String text, double shear1, double shear2)
    {
        AffineTransform a1 = AffineTransform.getShearInstance(shear1, 0.0D);
        AffineTransform a2 = AffineTransform.getShearInstance(shear2, 0.0D);
        return new InterpolatedTextLabel(text, a1, a2);
    }

    private AffineTransform mFirst;
    private AffineTransform mSecond;
    private double mFirstMatrix[];
    private double mSecondMatrix[];
}