Quickly writes a pixel to an image buffer. |
x = x location of the pixel to read y = y location of the pixel to read rgb = rgb pixel value to write buffer = any valid screen/image buffer (optional) |
Command Description:
This command will allow you fast access to a specific pixel in the buffer selected. While the ReadPixel command reads the pixel quickly (and you write it back with this command), it is still not fast enough for real-time screen effects. You are not required to lock the buffer with LockBuffer and subsequently unlock the buffer with UnlockBuffer. However, the operations will be a bit faster if you do. |
Example:
; High Speed Graphics Commands Graphics 640,480,16 ; Draw a bunch of crap on the screen For t= 1 To 1000 Color Rnd(255),Rnd(255),Rnd(255) Rect Rnd(640),Rnd(480),Rnd(150),Rnd(150),Rnd(1) Next Delay 3000 ; Copy the top half of the screen over the bottom half ; using fast pixels and locked buffers LockBuffer FrontBuffer() For x = 1 To 640 For y = 1 To 240 WritePixelFast x,y+241,ReadPixelFast(x,y) Next Next UnlockBuffer FrontBuffer() Delay 3000 ; Draw the left half of the screen over the right half ; using the slower direct pixel access For x = 1 To 320 For y = 1 To 480 WritePixel x+320,y,ReadPixel(x,y) Next Next |