ok, this was probably not the best answer, but there is no easy way.
there was on old example from Philho where he used a mask to fill a shape with a texture, this could be used as well for a stroke.
But i am pretty sure its not the result you are hoping for.
If you want something like a dotted or dashed line, there are other examples around here.
here is the masking code.
- PGraphics pgTexture;
PGraphics pgMask;
PGraphics pgShape;
PVector v1, v2, v3;
PVector s1, s2, s3;
PFont font;
static final int D_TRIANGLE = 1;
static final int D_TEXT = 2;
int m1, m2;
void setup()
{
size(800, 500);
PImage smallImage = loadImage("p.png");
font = createFont("Arial",25);
pgMask = createGraphics(width, height, JAVA2D);
pgShape = createGraphics(width, height, P2D);
// Make tiled texture
pgTexture = createGraphics(width, height, JAVA2D);
pgTexture.beginDraw();
for (int x = 0; x < width; x += smallImage.width)
{
for (int y = 0; y < height; y += smallImage.height)
{
pgTexture.image(smallImage, x, y);
}
}
pgTexture.endDraw();
// Define a triangle
v1 = new PVector(50, 50);
v2 = new PVector(width - 50, 50);
v3 = new PVector(width / 2, height / 2);
m1 = m2 = 5;
}
void draw()
{
background(230);
DrawTextured(D_TRIANGLE);
DrawTextured(D_TEXT);
v1.x += m1;
if (v1.x > width || v1.x < 0) m1 = -m1;
v2.x -= m2;
if (v2.x > width || v2.x < 0) m2 = -m2;
v1.y += 6*sin(v1.x/36);
v2.y += 6*cos(v2.x/36);
}
// I would pass an interface and a make drawing class instead
// but I wanted to make it simple here.
// Would be simpler with functions as parameter!
void DrawTextured(int drawing)
{
pgMask.background(0);
// pgMask.fill(255);
pgMask.noFill();
pgMask.strokeWeight(10) ;
pgMask.stroke(255);
// pgMask.noStroke();
if (drawing == D_TRIANGLE)
{
DrawTriangle(pgMask);
}
PImage piMask = pgMask.get(0, 0, width, height);
pgShape.image(pgTexture, 0, 0);
pgShape.mask(piMask);
image(pgShape, 0, 0);
}
void DrawTriangle(PGraphics g)
{
g.beginDraw();
g.triangle(v1.x, v1.y, v2.x, v2.y, v3.x, v3.y);
g.endDraw();
}
