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Topic: Perfect lines (Read 448 times) |
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firdosh
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Perfect lines
« on: Jun 7th, 2004, 4:26pm » |
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i am drawing an animated line between 2 circles but i cant get a perfect line since i cant pass in doubles as param to the line( ). Any one know a work around this ??
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justo
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Re: Perfect lines
« Reply #1 on: Jun 7th, 2004, 5:36pm » |
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um, i'm not exactly sure what you mean by a "perfect line," but a float has *far* more resolution than even the best anti-aliased renderer could ever provide.
if you just want smoother lines try sticking smooth() in your setup() method.
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kevinP
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Re: Perfect lines
« Reply #2 on: Jun 7th, 2004, 7:05pm » |
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on Jun 7th, 2004, 5:36pm, justo wrote:| if you just want smoother lines try sticking smooth() in your setup() method. |
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Unless you are using non-filled shapes in which case the smoothed ellipses look worse (006 .
Here's my quick try (the strokeWeight also still has some bugs):
Code:
void setup()
{
size(400, 400);
ellipseMode(CENTER_DIAMETER);
noFill();
smooth();
}
void loop()
{
background(70, 70, 40);
translate(width/2, height/2);
// center of each circle
float xCenterA = mouseX - (width/2);
float yCenterA = mouseY - (height/2);
float xCenterB = 2 * xCenterA;
float yCenterB = 2 * yCenterA;
float angle = atan2( yCenterB - yCenterA, xCenterB - xCenterA ); // angle
int rad = 15; // radius of circles
// endpoints of connecting line
float xPointA = xCenterA + rad * cos(angle);
float yPointA = yCenterA + rad * sin(angle);
float xPointB = xCenterB - rad * cos(angle);
float yPointB = yCenterB - rad * sin(angle);
push();
translate(xCenterA, yCenterA); // draw A circle
stroke(25, 200, 100);
ellipse(0,0, rad * 2, rad * 2);
pop();
push();
translate(xCenterB, yCenterB); // draw B circle
stroke(220, 100, 25);
ellipse(0,0, rad * 2, rad * 2);
pop();
strokeWeight(2); // draw connecting line
stroke(25, 30, 25);
line(xPointA, yPointA, xPointB, yPointB);
noStroke();
}
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Kevin Pfeiffer
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