MatrixUtils.java 文件源码

public static void mapPoints(Matrix matrix, float[] points)
{
  float[] m = { 0.0F, 0.0F, 0.0F, 0.0F, 0.0F, 0.0F, 0.0F, 0.0F, 0.0F };
  matrix.getValues(m);

  points[0] = (points[0] * m[0] + m[2]);
  points[1] = (points[1] * m[4] + m[5]);

  if (points.length == 4) {
    points[2] = (points[2] * m[0] + m[2]);
    points[3] = (points[3] * m[4] + m[5]);
  }
}