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Topic: ellipse cut_off repost (Read 782 times) |
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fjen
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ellipse cut_off repost
« on: Sep 28th, 2004, 7:17pm » |
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i repost here .. think it's a bug and maybe should be moved here:
http://processing.org/discourse/yabb/board_Syntax_action_displa_y_num_1095778415.html
problem:
ellipse(0,0,100,100) is 1px larger than rect(0,0,100,100)
while
ellipse(0,0,99,99) is same size as rect(0,0,99,99)
example:
http://www.florianjenett.de/p55/ellipse_bug/applet.html
bug in ellipse(x,y,w,h) or do i just not see the problem
/F
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fjen
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Re: ellipse cut_off repost
« Reply #1 on: Sep 28th, 2004, 7:19pm » |
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better example ... switch wh underneath setup and move mouse over the right or lower edge of the rect/ellipse ...
Code:
void setup() {size(200,200);}
// 99 is 1px too small
// int wh = 99;
// 100 is ok
int wh = 100;
void loop() {
//
noStroke();
// bounding box for ellipseMode(CORNER)
rect(0,0,wh,wh);
noFill();
stroke(1);
ellipseMode(CORNER);
ellipse(0,0,wh,wh);
//
// this is just the zoom ...
int zoomX = mouseX;//wh;
int zoomY = mouseY;//wh/2;
rect(124,124,51,51);
if (zoomX > 5 & zoomX < width-5 & zoomY > 5 & zoomY < height-5){
int[] zPxls = new int[100];
for (int i=0; i<100; i++) zPxls[i] = pixels[((zoomY-5)+ int(i/10))*width + (zoomX-5) + (i % 10)];
BImage bimg = new BImage(zPxls, 10, 10, RGBA);
image(bimg, 125,125,50,50);
}
}
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