Fix JAVA2D problem in shapes with multiple contours

[hx2A]

This is a fix for issue #791 that I opened after I discovered my fix for #643 was inadequate.

Explanation

The JAVA2D renderer should be able to draw contours just like the P2D renderer.

The contours are messed up because the codeIndex variable needs to be incremented when starting a contour to keep the vertexCodes array aligned with the vertices array.

You can test the fix with this code:

PShape s;

void setup() {
  size(400, 200);
  fill(255, 0, 0);
  noLoop();
}

void draw() {
  translate(50, 50);
  s = createShape();
  s.beginShape();
  s.fill(255, 0, 0);
  s.vertex(  0, 0);
  s.vertex(100, 0);
  s.vertex(100, 100);
  s.vertex(  0, 100);

  for (int x = 5; x <= 85; x += 20) {
    for (int y = 5; y <= 85; y += 20) {
      s.beginContour();
      s.vertex(x, y);
      s.vertex(x, y + 10);
      s.vertex(x + 10, y + 10);
      s.vertex(x + 10, y);
      s.endContour();
    }
  }

  s.endShape(CLOSE);
  shape(s, 0, 0);

  translate(200, 0);

  beginShape();
  fill(255, 0, 0);
  vertex( 0, 0);
  vertex(100, 0);
  vertex(100, 100);
  vertex(0, 100);

  for (int x = 5; x <= 85; x += 20) {
    for (int y = 5; y <= 85; y += 20) {
      beginContour();
      vertex(x, y);
      vertex(x, y + 10);
      vertex(x + 10, y + 10);
      vertex(x + 10, y);
      endContour();
    }
  }
 
  endShape(CLOSE);
}

[Stefterv]

Works on macOS

[SableRaf]

Thanks @hx2A 😀 and thanks @Stefterv too ✨

[hx2A]

Thank you, @SableRaf & @Stefterv !