Stroke () with pressure
There are 3 strokeCap โโ() modes in processing: SQUARE, PROJECT or ROUND. However, I am trying to get an effect that simulates pressure, like in Photoshop.
Is there any way to achieve this effect by programming it? I am thinking of using an ellipse that gradually grows and shrinks in size, but I am stuck in figuring out where the start and end of the stroke are when drawing the sketch.
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This can be a very rudimentary approach to what you want, but it can be a good starting point. I'm not sure if you want the full pressure sensitivity characterization, but this solution is what simulates this effect by replacing pressure with velocity. This is an example from Daniel Schiffman's Tutorial. Here's a link to the code: http://learningprocessing.com/exercises/chp03/exercise-03-07-absolute-value
I'll post it here as well.
// Learning Processing
// Daniel Shiffman
// http://www.learningprocessing.com
void setup() {
size(200, 200);
background(255);
smooth();
}
void draw() {
stroke(0);
strokeWeight(abs(pmouseX - mouseX));
line(pmouseX, pmouseY, mouseX, mouseY);
}
Hope this is a good starting point for what you need.
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