com.idrsolutions.pdf.color.shading

Class ShadingUtils

java.lang.Object

com.idrsolutions.pdf.color.shading.ShadingUtils

public class ShadingUtils
extends Object

Class to hold shading related utilities

Constructor Summary

Constructors

Constructor and Description
ShadingUtils()

Method Summary

Modifier and Type	Method and Description
static Color	bilinearInterpolateColor(Color upperLeft, Color upperRight, Color lowerLeft, Color lowerRight, float fractionX, float fractionY)
static Point2D	findDistancedPoint(double t, Point2D sp, Point2D c1, Point2D c2, Point2D ep) method used to find any point in given distance in cubic bezier curve
static Point2D	findIntersect(Point2D p1, Point2D p2, Point2D p3, Point2D p4)
static GeneralPath	getPathFromBBox(float[] rawBBox)
static float[]	getPdfCoords(AffineTransform inversedAffine, int x, int y, int xStart, int yStart)
static float[]	getPixelPDF(boolean isPrinting, int rotation, float x, float y, int xStart, int yStart, float offX, float offY, float minX, float pageHeight, float scaling)
static int	getRotationFromAffine(AffineTransform affine)
static Color	interpolate2Color(Color first, Color second, float fraction)

Methods inherited from class java.lang.Object

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

Constructor Detail

ShadingUtils

public ShadingUtils()

Method Detail

findIntersect

public static Point2D findIntersect(Point2D p1,
                                    Point2D p2,
                                    Point2D p3,
                                    Point2D p4)

interpolate2Color

public static Color interpolate2Color(Color first,
                                      Color second,
                                      float fraction)

bilinearInterpolateColor

public static Color bilinearInterpolateColor(Color upperLeft,
                                             Color upperRight,
                                             Color lowerLeft,
                                             Color lowerRight,
                                             float fractionX,
                                             float fractionY)

findDistancedPoint

public static Point2D findDistancedPoint(double t,
                                         Point2D sp,
                                         Point2D c1,
                                         Point2D c2,
                                         Point2D ep)

method used to find any point in given distance in cubic bezier curve

Parameters:

t - please note t varies between 0 -- 1

sp - starting point

c1 - control point

c2 - control point

ep - end point

Returns:

getRotationFromAffine

public static int getRotationFromAffine(AffineTransform affine)

getPixelPDF

public static final float[] getPixelPDF(boolean isPrinting,
                                        int rotation,
                                        float x,
                                        float y,
                                        int xStart,
                                        int yStart,
                                        float offX,
                                        float offY,
                                        float minX,
                                        float pageHeight,
                                        float scaling)

getPathFromBBox

public static GeneralPath getPathFromBBox(float[] rawBBox)

getPdfCoords

public static float[] getPdfCoords(AffineTransform inversedAffine,
                                   int x,
                                   int y,
                                   int xStart,
                                   int yStart)