SlitScan

Transform: Slit-Scan
from Form+Code in Design, Art, and Architecture
by Casey Reas, Chandler McWilliams, and LUST
Princeton Architectural Press, 2010
http://formandcode.com

/*
   
 GAmuza 0.4.1 examples
 ---------------------
 ReasMcWilliamsLUST_FORM+CODE/SlitScan.ga
 
 Transform: Slit-Scan
 from Form+Code in Design, Art, and Architecture
 by Casey Reas, Chandler McWilliams, and LUST
 Princeton Architectural Press, 2010
 
 http://formandcode.com
 
 This code was written in GAmuza 0.4.1+
 Get GAmuza at http://www.gamuza.cc
 
 created by n3m3da | www.d3cod3.org
 
*/

videoSliceX = CAPTURE_W/2
drawPositionX = 0

camPixels = of.pixels()
texPixels = of.pixels()

cam = of.texture()
tex = of.texture()

c = of.color()
temp = of.color()

function setup()
        tex:allocate(OUTPUT_W,OUTPUT_H,GL_RGB)
        texPixels:allocate(OUTPUT_W,OUTPUT_H,3)
end

function update()
        cam = ga.cameraTexture(0)
        cam:readToPixels(camPixels)
   
        for y=0, CAPTURE_H do
                c = camPixels:getColor(videoSliceX,y)
                temp:set(c:getBrightness(),255)
                texPixels:setColor(drawPositionX,y,temp)
        end
   
        tex:loadData(texPixels)
   
        if drawPositionX > OUTPUT_W then
                drawPositionX = 0
        else
                drawPositionX = drawPositionX + 1
        end
end

function draw()
        ga.background(0.0,1.0)

        of.setColor(245,151,176)
        tex:draw(0,OUTPUT_H/2 - CAPTURE_H/2)  
end