Processing: shapeMode() never works when shape = createShape(a_2D_native, ...)

Created on 11 Jan 2018 · 3Comments · Source: processing/processing

Description

The use of shapeMode() does not affect upon drawing

Expected Behavior

The drawing of a shape should be depending on the state of shapeMode.

Current Behavior

If you create a shape adapted from a 2D native such as ELLIPSE and state that shapeMode(CENTER), it does the same as shapeMode(CORNER)

Steps to Reproduce

The following code

PShape circle;

void setup() {
  size(200, 200);
  circle = createShape(ELLIPSE, 0, 0, 60, 60);
}

void draw() {
  shapeMode(CORNER);
  shape(circle, 100, 100);
  shapeMode(CENTER);
  shape(circle, 100, 100);
}

only puts one white circle in the center, when it should add two distinct ones:

As a comparison, this code produces two different circles:

PShape circle;

void setup() {
  size(200, 200);
  circle = createShape(ELLIPSE, 0, 0, 60, 60);
}

void draw() {
  shapeMode(CORNER);
  shape(circle, 100, 100);
  shapeMode(CENTER);
  shape(circle, 100, 200);
}

because one of them is simply drawn further down (y2 = 200):

Also, a scaled up version of the createShape() page in the Processing reference works just fine:

PShape bot;

void setup() {
  size(200, 200);
  bot = loadShape("bot.svg");
}

void draw() {
  shapeMode(CENTER);
  shape(bot, 70, 70, 100, 100);
  shapeMode(CORNER);
  shape(bot, 70, 70, 100, 100);
}