method copyFrom2DAndConcat

Source

void copyFrom2DAndConcat(Matrix copyMatrix, Matrix3D concatMatrix) {

  var m00 = copyMatrix.a;
  var m10 = copyMatrix.c;
  var m30 = copyMatrix.tx;
  var m01 = copyMatrix.b;
  var m11 = copyMatrix.d;
  var m31 = copyMatrix.ty;

  var n00 = concatMatrix.m00;
  var n10 = concatMatrix.m10;
  var n20 = concatMatrix.m20;
  var n30 = concatMatrix.m30;
  var n01 = concatMatrix.m01;
  var n11 = concatMatrix.m11;
  var n21 = concatMatrix.m21;
  var n31 = concatMatrix.m31;
  var n02 = concatMatrix.m02;
  var n12 = concatMatrix.m12;
  var n22 = concatMatrix.m22;
  var n32 = concatMatrix.m32;
  var n03 = concatMatrix.m03;
  var n13 = concatMatrix.m13;
  var n23 = concatMatrix.m23;
  var n33 = concatMatrix.m33;

  _data[00] = m00 * n00 + m01 * n10;
  _data[01] = m10 * n00 + m11 * n10;
  _data[02] = n20;
  _data[03] = m30 * n00 + m31 * n10 + n30;
  _data[04] = m00 * n01 + m01 * n11;
  _data[05] = m10 * n01 + m11 * n11;
  _data[06] = n21;
  _data[07] = m30 * n01 + m31 * n11 + n31;
  _data[08] = m00 * n02 + m01 * n12;
  _data[09] = m10 * n02 + m11 * n12;
  _data[10] = n22;
  _data[11] = m30 * n02 + m31 * n12 + n32;
  _data[12] = m00 * n03 + m01 * n13;
  _data[13] = m10 * n03 + m11 * n13;
  _data[14] = n23;
  _data[15] = m30 * n03 + m31 * n13 + n33;
}