sdl.test
Class TestVideo3

java.lang.Object
  |
  +--sdl.test.TestVideo3

public class TestVideo3

extends java.lang.Object

Demo of direct pixel access to draw 5 vertical lines on the screen. My early attempts to test the pixel color. You should see 5 lines of different color. There is likely a bug in the pixel rendering JNI code somewhere. Idealy the same RGB value will do make the same color whether you are using 8,16,24 bits of color. Unfortunately, now if you change the color depth, you will get completely different color lines. Scott Straw 8/02/02

Field Summary

static sdl.video.SDLSurface	aSurface
static int	pixel_color

Constructor Summary

TestVideo3()

Method Summary

static short	createHiColor(sdl.video.SDLPixelFormat fmt, byte red, byte green, byte blue)
static void	drawLine(sdl.video.SDLSurface surface, int x1, int y1, int width, int height)
static void	drawPixel(int x, int y) draws a pixel of the current color.
static void	drawRect(sdl.video.SDLSurface surface, int x1, int y1, int width, int height)
static void	fillRect(sdl.video.SDLSurface surface, int x1, int y1, int width, int height)
static sdl.video.SDLColor	getPixelColorAt(int offset)
static byte[]	getShort(short s)
static void	main(java.lang.String[] args)
static void	setColor(int b, int g, int r)
static void	setPixelColorAt(int pixelOffset, int r, int g, int b)

Methods inherited from class java.lang.Object

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

Field Detail

pixel_color

public static int pixel_color

aSurface

public static sdl.video.SDLSurface aSurface

Constructor Detail

TestVideo3

public TestVideo3()

Method Detail

createHiColor

public static short createHiColor(sdl.video.SDLPixelFormat fmt,
                                  byte red,
                                  byte green,
                                  byte blue)

getShort

public static byte[] getShort(short s)

main

public static void main(java.lang.String[] args)

getPixelColorAt

public static sdl.video.SDLColor getPixelColorAt(int offset)

setPixelColorAt

public static void setPixelColorAt(int pixelOffset,
                                   int r,
                                   int g,
                                   int b)

setColor

public static void setColor(int b,
                            int g,
                            int r)

drawPixel

public static void drawPixel(int x,
                             int y)

draws a pixel of the current color. notice the pixels are converted to byte in the following buffer

 	aSurface.m_Pixels[offset] = (byte)colorByte;
 	

drawLine

public static void drawLine(sdl.video.SDLSurface surface,
                            int x1,
                            int y1,
                            int width,
                            int height)

drawRect

public static void drawRect(sdl.video.SDLSurface surface,
                            int x1,
                            int y1,
                            int width,
                            int height)

fillRect

public static void fillRect(sdl.video.SDLSurface surface,
                            int x1,
                            int y1,
                            int width,
                            int height)