transform4 method
Transform the 4D vector
starting at vectorOffset
by the 4x4 matrix
starting at matrixOffset
. Store result in out
starting at outOffset
.
Implementation
static void transform4(Float32List out, int outOffset, Float32List matrix,
int matrixOffset, Float32List vector, int vectorOffset) {
final double x = vector[vectorOffset++];
final double y = vector[vectorOffset++];
final double z = vector[vectorOffset++];
final double w = vector[vectorOffset++];
final double m0 = matrix[matrixOffset];
final double m4 = matrix[4 + matrixOffset];
final double m8 = matrix[8 + matrixOffset];
final double m12 = matrix[12 + matrixOffset];
out[outOffset++] = (m0 * x + m4 * y + m8 * z + m12 * w);
final double m1 = matrix[1 + matrixOffset];
final double m5 = matrix[5 + matrixOffset];
final double m9 = matrix[9 + matrixOffset];
final double m13 = matrix[13 + matrixOffset];
out[outOffset++] = (m1 * x + m5 * y + m9 * z + m13 * w);
final double m2 = matrix[2 + matrixOffset];
final double m6 = matrix[6 + matrixOffset];
final double m10 = matrix[10 + matrixOffset];
final double m14 = matrix[14 + matrixOffset];
out[outOffset++] = (m2 * x + m6 * y + m10 * z + m14 * w);
final double m3 = matrix[3 + matrixOffset];
final double m7 = matrix[7 + matrixOffset];
final double m11 = matrix[11 + matrixOffset];
final double m15 = matrix[15 + matrixOffset];
out[outOffset++] = (m3 * x + m7 * y + m11 * z + m15 * w);
}