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Topic: Need help blending (Read 1881 times) |
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Ricard
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Need help blending
« on: Apr 14th, 2005, 11:20pm » |
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hola chavalotes!!
I'm having a bit of trouble blending to BGraphics into the main pixel buffer. Can anyone help me with this??
I'm guessing that my mistake is when apply the alpha() to the BGraphics, but I tried different things and haven't got the good result.
The objective is to see the to boxes in the same screen. Here is the code:
Code:
float[] clearZ;
float fovy, aspect;
float elevation, azimuth, distance;
BGraphics img, img2;
void setup () {
size(300, 300);
background(255);
img = new BGraphics(width,height);
img2 = new BGraphics(width,height);
img.background(255);
img2.background(255);
img.noStroke();
img2.noStroke();
fovy = 100.0;
aspect = (float) width / (float) height;
distance = 200.0;
elevation = radians(120);
azimuth = radians(0);
// make a copy of the virgin z-buffer state
clearZ=new float[width*height];
System.arraycopy(g.zbuffer,0,clearZ,0,clearZ.length);
}
void loop()
{
// turn off antialiasing
noSmooth();
// clear the z-buffer
System.arraycopy(clearZ,0,g.zbuffer,0,clearZ.length);
// draw semi-transparent background
fill(255,100);
rect(0,0,width,height);
// Set the perspective for the BGraphics2
img.beginCamera();
img.perspective(fovy, aspect, 1.0, 1000.0);
img.translate(20.0, 20.0, -distance);
img.rotateX(mouseY/100.0);
img.rotateZ(mouseX/100.0);
img.endCamera();
// Draw background for the BGraphics2, fading
img.fill(255,100);
img.rect(0,0,width,height);
// Draw the box for the BGraphics
img.fill(255,255,0,200);
img.box(50);
// Set the perspective for the BGraphics2
img2.beginCamera();
img2.perspective(fovy, aspect, 1.0, 1000.0);
img2.translate(0.0, 0.0, -distance);
img2.rotateX(mouseY/100.0);
img2.rotateY(mouseX/100.0);
img2.endCamera();
// Draw background for the BGraphics2, fading
img2.fill(255,150);
img2.rect(0,0,width,height);
// Draw the box for the BGraphics2
img2.fill(0,0,255,200);
img2.box(40);
// Set the alpha masks to the BGraphics
//smooth();
img.alpha(img);
img2.alpha(img2);
// Try to blend both BGraphics into the main pixel buffer
blend(img,0,0,img.width,img.height,DARKEST);
blend(img2,0,0,img2.width,img2.height,DARKEST);
// This one works ok, of course
//image(img2,0,0,img2.width,img2.height);
}
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