Method getWorldToScreenMatrix

src/core/p5.Renderer3D.js:785–799

* Get a matrix from world-space to screen-space

()

   * Get a matrix from world-space to screen-space
   */
  getWorldToScreenMatrix() {
    const modelMatrix = this.states.uModelMatrix;
    const viewMatrix = this.states.uViewMatrix;
    const projectionMatrix = this.states.uPMatrix;
    const projectedToScreenMatrix = new Matrix(4);
    projectedToScreenMatrix.scale(this.width, this.height, 1);
    projectedToScreenMatrix.translate([0.5, 0.5, 0.5]);
    projectedToScreenMatrix.scale(0.5, -0.5, 0.5);

    const modelViewMatrix = modelMatrix.copy().mult(viewMatrix);
    const modelViewProjectionMatrix = modelViewMatrix.mult(projectionMatrix);
    const worldToScreenMatrix = modelViewProjectionMatrix
      .mult(projectedToScreenMatrix);
    return worldToScreenMatrix;
  }

  //////////////////////////////////////////////
  // COLOR