Print Page - Drawing rainbow colour cycles

Title: Drawing rainbow colour cycles
Post by: Kitty Hello on 2013-Mar-23

Code (glbasic) Select


	DIM pix%[256]
	FOR i=0 TO 255
		LOCAL r,g,b
		r = 0.5 + SIN( i    /255 * 360.)/2.0
		g = 0.5 + SIN((i+85)/255 * 360.)/2.0
		b = 0.5 + SIN((i+170)/255 * 360.)/2.0
		pix[i] = RGB(r*255, g*255, b*255) + 0xff000000
	NEXT
	MEM2SPRITE(pix%[], 1, 256,1)
	STRETCHSPRITE 1, 0,150, 256,32

Totally non-optimized code. But you can use the texture later, which is OK.
I use it to track the colour bugs in the RaspberryPi setup...

Title: Re: Drawing rainbow colour cycles
Post by: mentalthink on 2013-Mar-23

This it's usefully for some drawing or modify image tool... THX

Title: Re: Drawing rainbow colour cycles
Post by: Ian Price on 2013-Mar-23

That's a really nice effect. Cheers Gernot :)

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Codesnippets => 2D-snippets => Topic started by: Kitty Hello on 2013-Mar-23