jv.objectGui
Class PsScanline

java.lang.Object
  jv.objectGui.PsScanline

public class PsScanline

extends java.lang.Object

Utility class with rasterization algorithms on pixel images.

Since:

JavaView 2.80.001

Field Summary

float[][]	aAnteile float[3][>=#scanlines].
float[][]	eAnteile float[3][>=#scanlines].
int	length Number of scanlines.
int[]	xa X-coordinates of scanlines. xa: head, xe: tail, both inclusive.
int[]	xe X-coordinates of scanlines. xa: head, xe: tail, both inclusive.
int	ymin First y-coordinate, die weiteren sind folgerichtig ymin+i fuer die i-te scanline

Constructor Summary

PsScanline()

Method Summary

void	makeScanlines(int x0, int y0, int x1, int y1, int x2, int y2) A triangle in pixel space is digitized in a set of horizontal scanlines.

Methods inherited from class java.lang.Object

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

Field Detail

xa

public int[] xa

X-coordinates of scanlines. xa: head, xe: tail, both inclusive. xa[i] is the beginning of i-th scanline from top. Arrays must not have correct length, see length.

xe

public int[] xe

X-coordinates of scanlines. xa: head, xe: tail, both inclusive. xa[i] is the beginning of i-th scanline from top. Arrays must not have correct length, see length.

aAnteile

public float[][] aAnteile

float[3][>=#scanlines]. Barycentric coordinates of heads of scanlines, e.g. for interpolation of scalar values at vertices.

eAnteile

public float[][] eAnteile

float[3][>=#scanlines]. Barycentric coordinates of heads of scanlines, e.g. for interpolation of scalar values at vertices.

length

public int length

Number of scanlines.

ymin

public int ymin

First y-coordinate, die weiteren sind folgerichtig ymin+i fuer die i-te scanline

Constructor Detail

PsScanline

public PsScanline()

Method Detail

makeScanlines

public void makeScanlines(int x0,
                          int y0,
                          int x1,
                          int y1,
                          int x2,
                          int y2)

A triangle in pixel space is digitized in a set of horizontal scanlines. The computed endpoints of all scanlines are assigned to this raster object.

Parameters:

x0 - x-pixel coordinate of first vertex of a triangle.

y0 - y-pixel coordinate of first vertex of a triangle.

x1 - x-pixel coordinate of second vertex of a triangle.

y1 - y-pixel coordinate of second vertex of a triangle.

x2 - x-pixel coordinate of third vertex of a triangle.

y2 - y-pixel coordinate of third vertex of a triangle.

Since:

JavaView 2.48.005