/* SPDX-License-Identifier: GPL-2.0-or-later * Copyright 2001-2002 NaN Holding BV. All rights reserved. */ /** \file * \ingroup bli */ #include "BLI_math.h" #include "BLI_strict_flags.h" #ifndef MATH_STANDALONE # include "eigen_capi.h" #endif /********************************* Init **************************************/ void zero_m2(float m[2][2]) { memset(m, 0, sizeof(float[2][2])); } void zero_m3(float m[3][3]) { memset(m, 0, sizeof(float[3][3])); } void zero_m4(float m[4][4]) { memset(m, 0, sizeof(float[4][4])); } void unit_m2(float m[2][2]) { m[0][0] = m[1][1] = 1.0f; m[0][1] = 0.0f; m[1][0] = 0.0f; } void unit_m3(float m[3][3]) { m[0][0] = m[1][1] = m[2][2] = 1.0f; m[0][1] = m[0][2] = 0.0f; m[1][0] = m[1][2] = 0.0f; m[2][0] = m[2][1] = 0.0f; } void unit_m4(float m[4][4]) { m[0][0] = m[1][1] = m[2][2] = m[3][3] = 1.0f; m[0][1] = m[0][2] = m[0][3] = 0.0f; m[1][0] = m[1][2] = m[1][3] = 0.0f; m[2][0] = m[2][1] = m[2][3] = 0.0f; m[3][0] = m[3][1] = m[3][2] = 0.0f; } void unit_m4_db(double m[4][4]) { m[0][0] = m[1][1] = m[2][2] = m[3][3] = 1.0f; m[0][1] = m[0][2] = m[0][3] = 0.0f; m[1][0] = m[1][2] = m[1][3] = 0.0f; m[2][0] = m[2][1] = m[2][3] = 0.0f; m[3][0] = m[3][1] = m[3][2] = 0.0f; } void copy_m2_m2(float m1[2][2], const float m2[2][2]) { memcpy(m1, m2, sizeof(float[2][2])); } void copy_m3_m3(float m1[3][3], const float m2[3][3]) { /* destination comes first: */ memcpy(m1, m2, sizeof(float[3][3])); } void copy_m4_m4(float m1[4][4], const float m2[4][4]) { memcpy(m1, m2, sizeof(float[4][4])); } void copy_m4_m4_db(double m1[4][4], const double m2[4][4]) { memcpy(m1, m2, sizeof(double[4][4])); } void copy_m3_m4(float m1[3][3], const float m2[4][4]) { m1[0][0] = m2[0][0]; m1[0][1] = m2[0][1]; m1[0][2] = m2[0][2]; m1[1][0] = m2[1][0]; m1[1][1] = m2[1][1]; m1[1][2] = m2[1][2]; m1[2][0] = m2[2][0]; m1[2][1] = m2[2][1]; m1[2][2] = m2[2][2]; } void copy_m4_m3(float m1[4][4], const float m2[3][3]) /* no clear */ { m1[0][0] = m2[0][0]; m1[0][1] = m2[0][1]; m1[0][2] = m2[0][2]; m1[1][0] = m2[1][0]; m1[1][1] = m2[1][1]; m1[1][2] = m2[1][2]; m1[2][0] = m2[2][0]; m1[2][1] = m2[2][1]; m1[2][2] = m2[2][2]; /* Reevan's Bugfix */ m1[0][3] = 0.0f; m1[1][3] = 0.0f; m1[2][3] = 0.0f; m1[3][0] = 0.0f; m1[3][1] = 0.0f; m1[3][2] = 0.0f; m1[3][3] = 1.0f; } void copy_m3_m2(float m1[3][3], const float m2[2][2]) { m1[0][0] = m2[0][0]; m1[0][1] = m2[0][1]; m1[0][2] = 0.0f; m1[1][0] = m2[1][0]; m1[1][1] = m2[1][1]; m1[1][2] = 0.0f; m1[2][0] = 0.0f; m1[2][1] = 0.0f; m1[2][2] = 1.0f; } void copy_m4_m2(float m1[4][4], const float m2[2][2]) { m1[0][0] = m2[0][0]; m1[0][1] = m2[0][1]; m1[0][2] = 0.0f; m1[0][3] = 0.0f; m1[1][0] = m2[1][0]; m1[1][1] = m2[1][1]; m1[1][2] = 0.0f; m1[1][3] = 0.0f; m1[2][0] = 0.0f; m1[2][1] = 0.0f; m1[2][2] = 1.0f; m1[2][3] = 0.0f; m1[3][0] = 0.0f; m1[3][1] = 0.0f; m1[3][2] = 0.0f; m1[3][3] = 1.0f; } void copy_m3d_m3(double m1[3][3], const float m2[3][3]) { m1[0][0] = m2[0][0]; m1[0][1] = m2[0][1]; m1[0][2] = m2[0][2]; m1[1][0] = m2[1][0]; m1[1][1] = m2[1][1]; m1[1][2] = m2[1][2]; m1[2][0] = m2[2][0]; m1[2][1] = m2[2][1]; m1[2][2] = m2[2][2]; } void copy_m4d_m4(double m1[4][4], const float m2[4][4]) { m1[0][0] = m2[0][0]; m1[0][1] = m2[0][1]; m1[0][2] = m2[0][2]; m1[0][3] = m2[0][3]; m1[1][0] = m2[1][0]; m1[1][1] = m2[1][1]; m1[1][2] = m2[1][2]; m1[1][3] = m2[1][3]; m1[2][0] = m2[2][0]; m1[2][1] = m2[2][1]; m1[2][2] = m2[2][2]; m1[2][3] = m2[2][3]; m1[3][0] = m2[3][0]; m1[3][1] = m2[3][1]; m1[3][2] = m2[3][2]; m1[3][3] = m2[3][3]; } void copy_m3_m3d(float m1[3][3], const double m2[3][3]) { /* Keep it stupid simple for better data flow in CPU. */ m1[0][0] = (float)m2[0][0]; m1[0][1] = (float)m2[0][1]; m1[0][2] = (float)m2[0][2]; m1[1][0] = (float)m2[1][0]; m1[1][1] = (float)m2[1][1]; m1[1][2] = (float)m2[1][2]; m1[2][0] = (float)m2[2][0]; m1[2][1] = (float)m2[2][1]; m1[2][2] = (float)m2[2][2]; } void swap_m3m3(float m1[3][3], float m2[3][3]) { float t; int i, j; for (i = 0; i < 3; i++) { for (j = 0; j < 3; j++) { t = m1[i][j]; m1[i][j] = m2[i][j]; m2[i][j] = t; } } } void swap_m4m4(float m1[4][4], float m2[4][4]) { float t; int i, j; for (i = 0; i < 4; i++) { for (j = 0; j < 4; j++) { t = m1[i][j]; m1[i][j] = m2[i][j]; m2[i][j] = t; } } } void shuffle_m4(float R[4][4], const int index[4]) { zero_m4(R); for (int k = 0; k < 4; k++) { if (index[k] >= 0) { R[index[k]][k] = 1.0f; } } } /******************************** Arithmetic *********************************/ void mul_m4_m4m4(float R[4][4], const float A[4][4], const float B[4][4]) { if (A == R) { mul_m4_m4_post(R, B); } else if (B == R) { mul_m4_m4_pre(R, A); } else { mul_m4_m4m4_uniq(R, A, B); } } void mul_m4_m4m4_uniq(float R[4][4], const float A[4][4], const float B[4][4]) { BLI_assert(!ELEM(R, A, B)); /* Matrix product: `R[j][k] = A[j][i] . B[i][k]`. */ #ifdef BLI_HAVE_SSE2 __m128 A0 = _mm_loadu_ps(A[0]); __m128 A1 = _mm_loadu_ps(A[1]); __m128 A2 = _mm_loadu_ps(A[2]); __m128 A3 = _mm_loadu_ps(A[3]); for (int i = 0; i < 4; i++) { __m128 B0 = _mm_set1_ps(B[i][0]); __m128 B1 = _mm_set1_ps(B[i][1]); __m128 B2 = _mm_set1_ps(B[i][2]); __m128 B3 = _mm_set1_ps(B[i][3]); __m128 sum = _mm_add_ps(_mm_add_ps(_mm_mul_ps(B0, A0), _mm_mul_ps(B1, A1)), _mm_add_ps(_mm_mul_ps(B2, A2), _mm_mul_ps(B3, A3))); _mm_storeu_ps(R[i], sum); } #else R[0][0] = B[0][0] * A[0][0] + B[0][1] * A[1][0] + B[0][2] * A[2][0] + B[0][3] * A[3][0]; R[0][1] = B[0][0] * A[0][1] + B[0][1] * A[1][1] + B[0][2] * A[2][1] + B[0][3] * A[3][1]; R[0][2] = B[0][0] * A[0][2] + B[0][1] * A[1][2] + B[0][2] * A[2][2] + B[0][3] * A[3][2]; R[0][3] = B[0][0] * A[0][3] + B[0][1] * A[1][3] + B[0][2] * A[2][3] + B[0][3] * A[3][3]; R[1][0] = B[1][0] * A[0][0] + B[1][1] * A[1][0] + B[1][2] * A[2][0] + B[1][3] * A[3][0]; R[1][1] = B[1][0] * A[0][1] + B[1][1] * A[1][1] + B[1][2] * A[2][1] + B[1][3] * A[3][1]; R[1][2] = B[1][0] * A[0][2] + B[1][1] * A[1][2] + B[1][2] * A[2][2] + B[1][3] * A[3][2]; R[1][3] = B[1][0] * A[0][3] + B[1][1] * A[1][3] + B[1][2] * A[2][3] + B[1][3] * A[3][3]; R[2][0] = B[2][0] * A[0][0] + B[2][1] * A[1][0] + B[2][2] * A[2][0] + B[2][3] * A[3][0]; R[2][1] = B[2][0] * A[0][1] + B[2][1] * A[1][1] + B[2][2] * A[2][1] + B[2][3] * A[3][1]; R[2][2] = B[2][0] * A[0][2] + B[2][1] * A[1][2] + B[2][2] * A[2][2] + B[2][3] * A[3][2]; R[2][3] = B[2][0] * A[0][3] + B[2][1] * A[1][3] + B[2][2] * A[2][3] + B[2][3] * A[3][3]; R[3][0] = B[3][0] * A[0][0] + B[3][1] * A[1][0] + B[3][2] * A[2][0] + B[3][3] * A[3][0]; R[3][1] = B[3][0] * A[0][1] + B[3][1] * A[1][1] + B[3][2] * A[2][1] + B[3][3] * A[3][1]; R[3][2] = B[3][0] * A[0][2] + B[3][1] * A[1][2] + B[3][2] * A[2][2] + B[3][3] * A[3][2]; R[3][3] = B[3][0] * A[0][3] + B[3][1] * A[1][3] + B[3][2] * A[2][3] + B[3][3] * A[3][3]; #endif } void mul_m4_m4m4_db_uniq(double R[4][4], const double A[4][4], const double B[4][4]) { BLI_assert(!ELEM(R, A, B)); /* Matrix product: `R[j][k] = A[j][i] . B[i][k]`. */ R[0][0] = B[0][0] * A[0][0] + B[0][1] * A[1][0] + B[0][2] * A[2][0] + B[0][3] * A[3][0]; R[0][1] = B[0][0] * A[0][1] + B[0][1] * A[1][1] + B[0][2] * A[2][1] + B[0][3] * A[3][1]; R[0][2] = B[0][0] * A[0][2] + B[0][1] * A[1][2] + B[0][2] * A[2][2] + B[0][3] * A[3][2]; R[0][3] = B[0][0] * A[0][3] + B[0][1] * A[1][3] + B[0][2] * A[2][3] + B[0][3] * A[3][3]; R[1][0] = B[1][0] * A[0][0] + B[1][1] * A[1][0] + B[1][2] * A[2][0] + B[1][3] * A[3][0]; R[1][1] = B[1][0] * A[0][1] + B[1][1] * A[1][1] + B[1][2] * A[2][1] + B[1][3] * A[3][1]; R[1][2] = B[1][0] * A[0][2] + B[1][1] * A[1][2] + B[1][2] * A[2][2] + B[1][3] * A[3][2]; R[1][3] = B[1][0] * A[0][3] + B[1][1] * A[1][3] + B[1][2] * A[2][3] + B[1][3] * A[3][3]; R[2][0] = B[2][0] * A[0][0] + B[2][1] * A[1][0] + B[2][2] * A[2][0] + B[2][3] * A[3][0]; R[2][1] = B[2][0] * A[0][1] + B[2][1] * A[1][1] + B[2][2] * A[2][1] + B[2][3] * A[3][1]; R[2][2] = B[2][0] * A[0][2] + B[2][1] * A[1][2] + B[2][2] * A[2][2] + B[2][3] * A[3][2]; R[2][3] = B[2][0] * A[0][3] + B[2][1] * A[1][3] + B[2][2] * A[2][3] + B[2][3] * A[3][3]; R[3][0] = B[3][0] * A[0][0] + B[3][1] * A[1][0] + B[3][2] * A[2][0] + B[3][3] * A[3][0]; R[3][1] = B[3][0] * A[0][1] + B[3][1] * A[1][1] + B[3][2] * A[2][1] + B[3][3] * A[3][1]; R[3][2] = B[3][0] * A[0][2] + B[3][1] * A[1][2] + B[3][2] * A[2][2] + B[3][3] * A[3][2]; R[3][3] = B[3][0] * A[0][3] + B[3][1] * A[1][3] + B[3][2] * A[2][3] + B[3][3] * A[3][3]; } void mul_m4db_m4db_m4fl_uniq(double R[4][4], const double A[4][4], const float B[4][4]) { /* Remove second check since types don't match. */ BLI_assert(!ELEM(R, A /*, B */)); /* Matrix product: `R[j][k] = A[j][i] . B[i][k]`. */ R[0][0] = B[0][0] * A[0][0] + B[0][1] * A[1][0] + B[0][2] * A[2][0] + B[0][3] * A[3][0]; R[0][1] = B[0][0] * A[0][1] + B[0][1] * A[1][1] + B[0][2] * A[2][1] + B[0][3] * A[3][1]; R[0][2] = B[0][0] * A[0][2] + B[0][1] * A[1][2] + B[0][2] * A[2][2] + B[0][3] * A[3][2]; R[0][3] = B[0][0] * A[0][3] + B[0][1] * A[1][3] + B[0][2] * A[2][3] + B[0][3] * A[3][3]; R[1][0] = B[1][0] * A[0][0] + B[1][1] * A[1][0] + B[1][2] * A[2][0] + B[1][3] * A[3][0]; R[1][1] = B[1][0] * A[0][1] + B[1][1] * A[1][1] + B[1][2] * A[2][1] + B[1][3] * A[3][1]; R[1][2] = B[1][0] * A[0][2] + B[1][1] * A[1][2] + B[1][2] * A[2][2] + B[1][3] * A[3][2]; R[1][3] = B[1][0] * A[0][3] + B[1][1] * A[1][3] + B[1][2] * A[2][3] + B[1][3] * A[3][3]; R[2][0] = B[2][0] * A[0][0] + B[2][1] * A[1][0] + B[2][2] * A[2][0] + B[2][3] * A[3][0]; R[2][1] = B[2][0] * A[0][1] + B[2][1] * A[1][1] + B[2][2] * A[2][1] + B[2][3] * A[3][1]; R[2][2] = B[2][0] * A[0][2] + B[2][1] * A[1][2] + B[2][2] * A[2][2] + B[2][3] * A[3][2]; R[2][3] = B[2][0] * A[0][3] + B[2][1] * A[1][3] + B[2][2] * A[2][3] + B[2][3] * A[3][3]; R[3][0] = B[3][0] * A[0][0] + B[3][1] * A[1][0] + B[3][2] * A[2][0] + B[3][3] * A[3][0]; R[3][1] = B[3][0] * A[0][1] + B[3][1] * A[1][1] + B[3][2] * A[2][1] + B[3][3] * A[3][1]; R[3][2] = B[3][0] * A[0][2] + B[3][1] * A[1][2] + B[3][2] * A[2][2] + B[3][3] * A[3][2]; R[3][3] = B[3][0] * A[0][3] + B[3][1] * A[1][3] + B[3][2] * A[2][3] + B[3][3] * A[3][3]; } void mul_m4_m4_pre(float R[4][4], const float A[4][4]) { BLI_assert(A != R); float B[4][4]; copy_m4_m4(B, R); mul_m4_m4m4_uniq(R, A, B); } void mul_m4_m4_post(float R[4][4], const float B[4][4]) { BLI_assert(B != R); float A[4][4]; copy_m4_m4(A, R); mul_m4_m4m4_uniq(R, A, B); } void mul_m3_m3m3(float R[3][3], const float A[3][3], const float B[3][3]) { if (A == R) { mul_m3_m3_post(R, B); } else if (B == R) { mul_m3_m3_pre(R, A); } else { mul_m3_m3m3_uniq(R, A, B); } } void mul_m3_m3_pre(float R[3][3], const float A[3][3]) { BLI_assert(A != R); float B[3][3]; copy_m3_m3(B, R); mul_m3_m3m3_uniq(R, A, B); } void mul_m3_m3_post(float R[3][3], const float B[3][3]) { BLI_assert(B != R); float A[3][3]; copy_m3_m3(A, R); mul_m3_m3m3_uniq(R, A, B); } void mul_m3_m3m3_uniq(float R[3][3], const float A[3][3], const float B[3][3]) { BLI_assert(!ELEM(R, A, B)); R[0][0] = B[0][0] * A[0][0] + B[0][1] * A[1][0] + B[0][2] * A[2][0]; R[0][1] = B[0][0] * A[0][1] + B[0][1] * A[1][1] + B[0][2] * A[2][1]; R[0][2] = B[0][0] * A[0][2] + B[0][1] * A[1][2] + B[0][2] * A[2][2]; R[1][0] = B[1][0] * A[0][0] + B[1][1] * A[1][0] + B[1][2] * A[2][0]; R[1][1] = B[1][0] * A[0][1] + B[1][1] * A[1][1] + B[1][2] * A[2][1]; R[1][2] = B[1][0] * A[0][2] + B[1][1] * A[1][2] + B[1][2] * A[2][2]; R[2][0] = B[2][0] * A[0][0] + B[2][1] * A[1][0] + B[2][2] * A[2][0]; R[2][1] = B[2][0] * A[0][1] + B[2][1] * A[1][1] + B[2][2] * A[2][1]; R[2][2] = B[2][0] * A[0][2] + B[2][1] * A[1][2] + B[2][2] * A[2][2]; } void mul_m4_m4m3(float R[4][4], const float A[4][4], const float B[3][3]) { float B_[3][3], A_[4][4]; /* copy so it works when R is the same pointer as A or B */ /* TODO: avoid copying when matrices are different */ copy_m4_m4(A_, A); copy_m3_m3(B_, B); R[0][0] = B_[0][0] * A_[0][0] + B_[0][1] * A_[1][0] + B_[0][2] * A_[2][0]; R[0][1] = B_[0][0] * A_[0][1] + B_[0][1] * A_[1][1] + B_[0][2] * A_[2][1]; R[0][2] = B_[0][0] * A_[0][2] + B_[0][1] * A_[1][2] + B_[0][2] * A_[2][2]; R[1][0] = B_[1][0] * A_[0][0] + B_[1][1] * A_[1][0] + B_[1][2] * A_[2][0]; R[1][1] = B_[1][0] * A_[0][1] + B_[1][1] * A_[1][1] + B_[1][2] * A_[2][1]; R[1][2] = B_[1][0] * A_[0][2] + B_[1][1] * A_[1][2] + B_[1][2] * A_[2][2]; R[2][0] = B_[2][0] * A_[0][0] + B_[2][1] * A_[1][0] + B_[2][2] * A_[2][0]; R[2][1] = B_[2][0] * A_[0][1] + B_[2][1] * A_[1][1] + B_[2][2] * A_[2][1]; R[2][2] = B_[2][0] * A_[0][2] + B_[2][1] * A_[1][2] + B_[2][2] * A_[2][2]; } void mul_m3_m3m4(float R[3][3], const float A[3][3], const float B[4][4]) { float B_[4][4], A_[3][3]; /* copy so it works when R is the same pointer as A or B */ /* TODO: avoid copying when matrices are different */ copy_m3_m3(A_, A); copy_m4_m4(B_, B); /* R[i][j] = B_[i][k] * A_[k][j] */ R[0][0] = B_[0][0] * A_[0][0] + B_[0][1] * A_[1][0] + B_[0][2] * A_[2][0]; R[0][1] = B_[0][0] * A_[0][1] + B_[0][1] * A_[1][1] + B_[0][2] * A_[2][1]; R[0][2] = B_[0][0] * A_[0][2] + B_[0][1] * A_[1][2] + B_[0][2] * A_[2][2]; R[1][0] = B_[1][0] * A_[0][0] + B_[1][1] * A_[1][0] + B_[1][2] * A_[2][0]; R[1][1] = B_[1][0] * A_[0][1] + B_[1][1] * A_[1][1] + B_[1][2] * A_[2][1]; R[1][2] = B_[1][0] * A_[0][2] + B_[1][1] * A_[1][2] + B_[1][2] * A_[2][2]; R[2][0] = B_[2][0] * A_[0][0] + B_[2][1] * A_[1][0] + B_[2][2] * A_[2][0]; R[2][1] = B_[2][0] * A_[0][1] + B_[2][1] * A_[1][1] + B_[2][2] * A_[2][1]; R[2][2] = B_[2][0] * A_[0][2] + B_[2][1] * A_[1][2] + B_[2][2] * A_[2][2]; } void mul_m3_m4m3(float R[3][3], const float A[4][4], const float B[3][3]) { float B_[3][3], A_[4][4]; /* copy so it works when R is the same pointer as A or B */ /* TODO: avoid copying when matrices are different */ copy_m4_m4(A_, A); copy_m3_m3(B_, B); /* R[i][j] = B[i][k] * A[k][j] */ R[0][0] = B_[0][0] * A_[0][0] + B_[0][1] * A_[1][0] + B_[0][2] * A_[2][0]; R[0][1] = B_[0][0] * A_[0][1] + B_[0][1] * A_[1][1] + B_[0][2] * A_[2][1]; R[0][2] = B_[0][0] * A_[0][2] + B_[0][1] * A_[1][2] + B_[0][2] * A_[2][2]; R[1][0] = B_[1][0] * A_[0][0] + B_[1][1] * A_[1][0] + B_[1][2] * A_[2][0]; R[1][1] = B_[1][0] * A_[0][1] + B_[1][1] * A_[1][1] + B_[1][2] * A_[2][1]; R[1][2] = B_[1][0] * A_[0][2] + B_[1][1] * A_[1][2] + B_[1][2] * A_[2][2]; R[2][0] = B_[2][0] * A_[0][0] + B_[2][1] * A_[1][0] + B_[2][2] * A_[2][0]; R[2][1] = B_[2][0] * A_[0][1] + B_[2][1] * A_[1][1] + B_[2][2] * A_[2][1]; R[2][2] = B_[2][0] * A_[0][2] + B_[2][1] * A_[1][2] + B_[2][2] * A_[2][2]; } void mul_m4_m3m4(float R[4][4], const float A[3][3], const float B[4][4]) { float B_[4][4], A_[3][3]; /* copy so it works when R is the same pointer as A or B */ /* TODO: avoid copying when matrices are different */ copy_m3_m3(A_, A); copy_m4_m4(B_, B); R[0][0] = B_[0][0] * A_[0][0] + B_[0][1] * A_[1][0] + B_[0][2] * A_[2][0]; R[0][1] = B_[0][0] * A_[0][1] + B_[0][1] * A_[1][1] + B_[0][2] * A_[2][1]; R[0][2] = B_[0][0] * A_[0][2] + B_[0][1] * A_[1][2] + B_[0][2] * A_[2][2]; R[1][0] = B_[1][0] * A_[0][0] + B_[1][1] * A_[1][0] + B_[1][2] * A_[2][0]; R[1][1] = B_[1][0] * A_[0][1] + B_[1][1] * A_[1][1] + B_[1][2] * A_[2][1]; R[1][2] = B_[1][0] * A_[0][2] + B_[1][1] * A_[1][2] + B_[1][2] * A_[2][2]; R[2][0] = B_[2][0] * A_[0][0] + B_[2][1] * A_[1][0] + B_[2][2] * A_[2][0]; R[2][1] = B_[2][0] * A_[0][1] + B_[2][1] * A_[1][1] + B_[2][2] * A_[2][1]; R[2][2] = B_[2][0] * A_[0][2] + B_[2][1] * A_[1][2] + B_[2][2] * A_[2][2]; } void mul_m3_m4m4(float R[3][3], const float A[4][4], const float B[4][4]) { R[0][0] = B[0][0] * A[0][0] + B[0][1] * A[1][0] + B[0][2] * A[2][0]; R[0][1] = B[0][0] * A[0][1] + B[0][1] * A[1][1] + B[0][2] * A[2][1]; R[0][2] = B[0][0] * A[0][2] + B[0][1] * A[1][2] + B[0][2] * A[2][2]; R[1][0] = B[1][0] * A[0][0] + B[1][1] * A[1][0] + B[1][2] * A[2][0]; R[1][1] = B[1][0] * A[0][1] + B[1][1] * A[1][1] + B[1][2] * A[2][1]; R[1][2] = B[1][0] * A[0][2] + B[1][1] * A[1][2] + B[1][2] * A[2][2]; R[2][0] = B[2][0] * A[0][0] + B[2][1] * A[1][0] + B[2][2] * A[2][0]; R[2][1] = B[2][0] * A[0][1] + B[2][1] * A[1][1] + B[2][2] * A[2][1]; R[2][2] = B[2][0] * A[0][2] + B[2][1] * A[1][2] + B[2][2] * A[2][2]; } /* -------------------------------------------------------------------- */ /** \name Macro helpers for: mul_m3_series * \{ */ void _va_mul_m3_series_3(float r[3][3], const float m1[3][3], const float m2[3][3]) { mul_m3_m3m3(r, m1, m2); } void _va_mul_m3_series_4(float r[3][3], const float m1[3][3], const float m2[3][3], const float m3[3][3]) { mul_m3_m3m3(r, m1, m2); mul_m3_m3m3(r, r, m3); } void _va_mul_m3_series_5(float r[3][3], const float m1[3][3], const float m2[3][3], const float m3[3][3], const float m4[3][3]) { mul_m3_m3m3(r, m1, m2); mul_m3_m3m3(r, r, m3); mul_m3_m3m3(r, r, m4); } void _va_mul_m3_series_6(float r[3][3], const float m1[3][3], const float m2[3][3], const float m3[3][3], const float m4[3][3], const float m5[3][3]) { mul_m3_m3m3(r, m1, m2); mul_m3_m3m3(r, r, m3); mul_m3_m3m3(r, r, m4); mul_m3_m3m3(r, r, m5); } void _va_mul_m3_series_7(float r[3][3], const float m1[3][3], const float m2[3][3], const float m3[3][3], const float m4[3][3], const float m5[3][3], const float m6[3][3]) { mul_m3_m3m3(r, m1, m2); mul_m3_m3m3(r, r, m3); mul_m3_m3m3(r, r, m4); mul_m3_m3m3(r, r, m5); mul_m3_m3m3(r, r, m6); } void _va_mul_m3_series_8(float r[3][3], const float m1[3][3], const float m2[3][3], const float m3[3][3], const float m4[3][3], const float m5[3][3], const float m6[3][3], const float m7[3][3]) { mul_m3_m3m3(r, m1, m2); mul_m3_m3m3(r, r, m3); mul_m3_m3m3(r, r, m4); mul_m3_m3m3(r, r, m5); mul_m3_m3m3(r, r, m6); mul_m3_m3m3(r, r, m7); } void _va_mul_m3_series_9(float r[3][3], const float m1[3][3], const float m2[3][3], const float m3[3][3], const float m4[3][3], const float m5[3][3], const float m6[3][3], const float m7[3][3], const float m8[3][3]) { mul_m3_m3m3(r, m1, m2); mul_m3_m3m3(r, r, m3); mul_m3_m3m3(r, r, m4); mul_m3_m3m3(r, r, m5); mul_m3_m3m3(r, r, m6); mul_m3_m3m3(r, r, m7); mul_m3_m3m3(r, r, m8); } /** \} */ /* -------------------------------------------------------------------- */ /** \name Macro helpers for: mul_m4_series * \{ */ void _va_mul_m4_series_3(float r[4][4], const float m1[4][4], const float m2[4][4]) { mul_m4_m4m4(r, m1, m2); } void _va_mul_m4_series_4(float r[4][4], const float m1[4][4], const float m2[4][4], const float m3[4][4]) { mul_m4_m4m4(r, m1, m2); mul_m4_m4m4(r, r, m3); } void _va_mul_m4_series_5(float r[4][4], const float m1[4][4], const float m2[4][4], const float m3[4][4], const float m4[4][4]) { mul_m4_m4m4(r, m1, m2); mul_m4_m4m4(r, r, m3); mul_m4_m4m4(r, r, m4); } void _va_mul_m4_series_6(float r[4][4], const float m1[4][4], const float m2[4][4], const float m3[4][4], const float m4[4][4], const float m5[4][4]) { mul_m4_m4m4(r, m1, m2); mul_m4_m4m4(r, r, m3); mul_m4_m4m4(r, r, m4); mul_m4_m4m4(r, r, m5); } void _va_mul_m4_series_7(float r[4][4], const float m1[4][4], const float m2[4][4], const float m3[4][4], const float m4[4][4], const float m5[4][4], const float m6[4][4]) { mul_m4_m4m4(r, m1, m2); mul_m4_m4m4(r, r, m3); mul_m4_m4m4(r, r, m4); mul_m4_m4m4(r, r, m5); mul_m4_m4m4(r, r, m6); } void _va_mul_m4_series_8(float r[4][4], const float m1[4][4], const float m2[4][4], const float m3[4][4], const float m4[4][4], const float m5[4][4], const float m6[4][4], const float m7[4][4]) { mul_m4_m4m4(r, m1, m2); mul_m4_m4m4(r, r, m3); mul_m4_m4m4(r, r, m4); mul_m4_m4m4(r, r, m5); mul_m4_m4m4(r, r, m6); mul_m4_m4m4(r, r, m7); } void _va_mul_m4_series_9(float r[4][4], const float m1[4][4], const float m2[4][4], const float m3[4][4], const float m4[4][4], const float m5[4][4], const float m6[4][4], const float m7[4][4], const float m8[4][4]) { mul_m4_m4m4(r, m1, m2); mul_m4_m4m4(r, r, m3); mul_m4_m4m4(r, r, m4); mul_m4_m4m4(r, r, m5); mul_m4_m4m4(r, r, m6); mul_m4_m4m4(r, r, m7); mul_m4_m4m4(r, r, m8); } /** \} */ void mul_v2_m3v2(float r[2], const float m[3][3], const float v[2]) { float temp[3], warped[3]; copy_v2_v2(temp, v); temp[2] = 1.0f; mul_v3_m3v3(warped, m, temp); r[0] = warped[0] / warped[2]; r[1] = warped[1] / warped[2]; } void mul_m3_v2(const float m[3][3], float r[2]) { mul_v2_m3v2(r, m, r); } void mul_m4_v3(const float M[4][4], float r[3]) { const float x = r[0]; const float y = r[1]; r[0] = x * M[0][0] + y * M[1][0] + M[2][0] * r[2] + M[3][0]; r[1] = x * M[0][1] + y * M[1][1] + M[2][1] * r[2] + M[3][1]; r[2] = x * M[0][2] + y * M[1][2] + M[2][2] * r[2] + M[3][2]; } void mul_v3_m4v3(float r[3], const float mat[4][4], const float vec[3]) { const float x = vec[0]; const float y = vec[1]; r[0] = x * mat[0][0] + y * mat[1][0] + mat[2][0] * vec[2] + mat[3][0]; r[1] = x * mat[0][1] + y * mat[1][1] + mat[2][1] * vec[2] + mat[3][1]; r[2] = x * mat[0][2] + y * mat[1][2] + mat[2][2] * vec[2] + mat[3][2]; } void mul_v3_m4v3_db(double r[3], const double mat[4][4], const double vec[3]) { const double x = vec[0]; const double y = vec[1]; r[0] = x * mat[0][0] + y * mat[1][0] + mat[2][0] * vec[2] + mat[3][0]; r[1] = x * mat[0][1] + y * mat[1][1] + mat[2][1] * vec[2] + mat[3][1]; r[2] = x * mat[0][2] + y * mat[1][2] + mat[2][2] * vec[2] + mat[3][2]; } void mul_v4_m4v3_db(double r[4], const double mat[4][4], const double vec[3]) { const double x = vec[0]; const double y = vec[1]; r[0] = x * mat[0][0] + y * mat[1][0] + mat[2][0] * vec[2] + mat[3][0]; r[1] = x * mat[0][1] + y * mat[1][1] + mat[2][1] * vec[2] + mat[3][1]; r[2] = x * mat[0][2] + y * mat[1][2] + mat[2][2] * vec[2] + mat[3][2]; r[3] = x * mat[0][3] + y * mat[1][3] + mat[2][3] * vec[2] + mat[3][3]; } void mul_v2_m4v3(float r[2], const float mat[4][4], const float vec[3]) { const float x = vec[0]; r[0] = x * mat[0][0] + vec[1] * mat[1][0] + mat[2][0] * vec[2] + mat[3][0]; r[1] = x * mat[0][1] + vec[1] * mat[1][1] + mat[2][1] * vec[2] + mat[3][1]; } void mul_v2_m2v2(float r[2], const float mat[2][2], const float vec[2]) { const float x = vec[0]; r[0] = mat[0][0] * x + mat[1][0] * vec[1]; r[1] = mat[0][1] * x + mat[1][1] * vec[1]; } void mul_m2_v2(const float mat[2][2], float vec[2]) { mul_v2_m2v2(vec, mat, vec); } void mul_mat3_m4_v3(const float M[4][4], float r[3]) { const float x = r[0]; const float y = r[1]; r[0] = x * M[0][0] + y * M[1][0] + M[2][0] * r[2]; r[1] = x * M[0][1] + y * M[1][1] + M[2][1] * r[2]; r[2] = x * M[0][2] + y * M[1][2] + M[2][2] * r[2]; } void mul_v3_mat3_m4v3(float r[3], const float mat[4][4], const float vec[3]) { const float x = vec[0]; const float y = vec[1]; r[0] = x * mat[0][0] + y * mat[1][0] + mat[2][0] * vec[2]; r[1] = x * mat[0][1] + y * mat[1][1] + mat[2][1] * vec[2]; r[2] = x * mat[0][2] + y * mat[1][2] + mat[2][2] * vec[2]; } void mul_v3_mat3_m4v3_db(double r[3], const double mat[4][4], const double vec[3]) { const double x = vec[0]; const double y = vec[1]; r[0] = x * mat[0][0] + y * mat[1][0] + mat[2][0] * vec[2]; r[1] = x * mat[0][1] + y * mat[1][1] + mat[2][1] * vec[2]; r[2] = x * mat[0][2] + y * mat[1][2] + mat[2][2] * vec[2]; } void mul_project_m4_v3(const float mat[4][4], float vec[3]) { /* absolute value to not flip the frustum upside down behind the camera */ const float w = fabsf(mul_project_m4_v3_zfac(mat, vec)); mul_m4_v3(mat, vec); vec[0] /= w; vec[1] /= w; vec[2] /= w; } void mul_v3_project_m4_v3(float r[3], const float mat[4][4], const float vec[3]) { const float w = fabsf(mul_project_m4_v3_zfac(mat, vec)); mul_v3_m4v3(r, mat, vec); r[0] /= w; r[1] /= w; r[2] /= w; } void mul_v2_project_m4_v3(float r[2], const float mat[4][4], const float vec[3]) { const float w = fabsf(mul_project_m4_v3_zfac(mat, vec)); mul_v2_m4v3(r, mat, vec); r[0] /= w; r[1] /= w; } void mul_v4_m4v4(float r[4], const float mat[4][4], const float v[4]) { const float x = v[0]; const float y = v[1]; const float z = v[2]; r[0] = x * mat[0][0] + y * mat[1][0] + z * mat[2][0] + mat[3][0] * v[3]; r[1] = x * mat[0][1] + y * mat[1][1] + z * mat[2][1] + mat[3][1] * v[3]; r[2] = x * mat[0][2] + y * mat[1][2] + z * mat[2][2] + mat[3][2] * v[3]; r[3] = x * mat[0][3] + y * mat[1][3] + z * mat[2][3] + mat[3][3] * v[3]; } void mul_m4_v4(const float mat[4][4], float r[4]) { mul_v4_m4v4(r, mat, r); } void mul_v4d_m4v4d(double r[4], const float mat[4][4], const double v[4]) { const double x = v[0]; const double y = v[1]; const double z = v[2]; r[0] = x * (double)mat[0][0] + y * (double)mat[1][0] + z * (double)mat[2][0] + (double)mat[3][0] * v[3]; r[1] = x * (double)mat[0][1] + y * (double)mat[1][1] + z * (double)mat[2][1] + (double)mat[3][1] * v[3]; r[2] = x * (double)mat[0][2] + y * (double)mat[1][2] + z * (double)mat[2][2] + (double)mat[3][2] * v[3]; r[3] = x * (double)mat[0][3] + y * (double)mat[1][3] + z * (double)mat[2][3] + (double)mat[3][3] * v[3]; } void mul_m4_v4d(const float mat[4][4], double r[4]) { mul_v4d_m4v4d(r, mat, r); } void mul_v4_m4v3(float r[4], const float M[4][4], const float v[3]) { /* v has implicit w = 1.0f */ r[0] = v[0] * M[0][0] + v[1] * M[1][0] + M[2][0] * v[2] + M[3][0]; r[1] = v[0] * M[0][1] + v[1] * M[1][1] + M[2][1] * v[2] + M[3][1]; r[2] = v[0] * M[0][2] + v[1] * M[1][2] + M[2][2] * v[2] + M[3][2]; r[3] = v[0] * M[0][3] + v[1] * M[1][3] + M[2][3] * v[2] + M[3][3]; } void mul_v3_m3v3(float r[3], const float M[3][3], const float a[3]) { float t[3]; copy_v3_v3(t, a); r[0] = M[0][0] * t[0] + M[1][0] * t[1] + M[2][0] * t[2]; r[1] = M[0][1] * t[0] + M[1][1] * t[1] + M[2][1] * t[2]; r[2] = M[0][2] * t[0] + M[1][2] * t[1] + M[2][2] * t[2]; } void mul_v3_m3v3_db(double r[3], const double M[3][3], const double a[3]) { double t[3]; copy_v3_v3_db(t, a); r[0] = M[0][0] * t[0] + M[1][0] * t[1] + M[2][0] * t[2]; r[1] = M[0][1] * t[0] + M[1][1] * t[1] + M[2][1] * t[2]; r[2] = M[0][2] * t[0] + M[1][2] * t[1] + M[2][2] * t[2]; } void mul_v2_m3v3(float r[2], const float M[3][3], const float a[3]) { float t[3]; copy_v3_v3(t, a); r[0] = M[0][0] * t[0] + M[1][0] * t[1] + M[2][0] * t[2]; r[1] = M[0][1] * t[0] + M[1][1] * t[1] + M[2][1] * t[2]; } void mul_m3_v3(const float M[3][3], float r[3]) { mul_v3_m3v3(r, M, (const float[3]){UNPACK3(r)}); } void mul_m3_v3_db(const double M[3][3], double r[3]) { mul_v3_m3v3_db(r, M, (const double[3]){UNPACK3(r)}); } void mul_transposed_m3_v3(const float M[3][3], float r[3]) { const float x = r[0]; const float y = r[1]; r[0] = x * M[0][0] + y * M[0][1] + M[0][2] * r[2]; r[1] = x * M[1][0] + y * M[1][1] + M[1][2] * r[2]; r[2] = x * M[2][0] + y * M[2][1] + M[2][2] * r[2]; } void mul_transposed_mat3_m4_v3(const float M[4][4], float r[3]) { const float x = r[0]; const float y = r[1]; r[0] = x * M[0][0] + y * M[0][1] + M[0][2] * r[2]; r[1] = x * M[1][0] + y * M[1][1] + M[1][2] * r[2]; r[2] = x * M[2][0] + y * M[2][1] + M[2][2] * r[2]; } void mul_m3_fl(float R[3][3], float f) { int i, j; for (i = 0; i < 3; i++) { for (j = 0; j < 3; j++) { R[i][j] *= f; } } } void mul_m4_fl(float R[4][4], float f) { int i, j; for (i = 0; i < 4; i++) { for (j = 0; j < 4; j++) { R[i][j] *= f; } } } void mul_mat3_m4_fl(float R[4][4], float f) { int i, j; for (i = 0; i < 3; i++) { for (j = 0; j < 3; j++) { R[i][j] *= f; } } } void negate_m3(float R[3][3]) { int i, j; for (i = 0; i < 3; i++) { for (j = 0; j < 3; j++) { R[i][j] *= -1.0f; } } } void negate_mat3_m4(float R[4][4]) { int i, j; for (i = 0; i < 3; i++) { for (j = 0; j < 3; j++) { R[i][j] *= -1.0f; } } } void negate_m4(float R[4][4]) { int i, j; for (i = 0; i < 4; i++) { for (j = 0; j < 4; j++) { R[i][j] *= -1.0f; } } } void mul_m3_v3_double(const float M[3][3], double r[3]) { const double x = r[0]; const double y = r[1]; r[0] = x * (double)M[0][0] + y * (double)M[1][0] + (double)M[2][0] * r[2]; r[1] = x * (double)M[0][1] + y * (double)M[1][1] + (double)M[2][1] * r[2]; r[2] = x * (double)M[0][2] + y * (double)M[1][2] + (double)M[2][2] * r[2]; } void add_m3_m3m3(float R[3][3], const float A[3][3], const float B[3][3]) { int i, j; for (i = 0; i < 3; i++) { for (j = 0; j < 3; j++) { R[i][j] = A[i][j] + B[i][j]; } } } void add_m4_m4m4(float R[4][4], const float A[4][4], const float B[4][4]) { int i, j; for (i = 0; i < 4; i++) { for (j = 0; j < 4; j++) { R[i][j] = A[i][j] + B[i][j]; } } } void madd_m3_m3m3fl(float R[3][3], const float A[3][3], const float B[3][3], const float f) { int i, j; for (i = 0; i < 3; i++) { for (j = 0; j < 3; j++) { R[i][j] = A[i][j] + B[i][j] * f; } } } void madd_m4_m4m4fl(float R[4][4], const float A[4][4], const float B[4][4], const float f) { int i, j; for (i = 0; i < 4; i++) { for (j = 0; j < 4; j++) { R[i][j] = A[i][j] + B[i][j] * f; } } } void sub_m3_m3m3(float R[3][3], const float A[3][3], const float B[3][3]) { int i, j; for (i = 0; i < 3; i++) { for (j = 0; j < 3; j++) { R[i][j] = A[i][j] - B[i][j]; } } } void sub_m4_m4m4(float R[4][4], const float A[4][4], const float B[4][4]) { int i, j; for (i = 0; i < 4; i++) { for (j = 0; j < 4; j++) { R[i][j] = A[i][j] - B[i][j]; } } } float determinant_m3_array(const float m[3][3]) { return (m[0][0] * (m[1][1] * m[2][2] - m[1][2] * m[2][1]) - m[1][0] * (m[0][1] * m[2][2] - m[0][2] * m[2][1]) + m[2][0] * (m[0][1] * m[1][2] - m[0][2] * m[1][1])); } float determinant_m4_mat3_array(const float m[4][4]) { return (m[0][0] * (m[1][1] * m[2][2] - m[1][2] * m[2][1]) - m[1][0] * (m[0][1] * m[2][2] - m[0][2] * m[2][1]) + m[2][0] * (m[0][1] * m[1][2] - m[0][2] * m[1][1])); } double determinant_m3_array_db(const double m[3][3]) { return (m[0][0] * (m[1][1] * m[2][2] - m[1][2] * m[2][1]) - m[1][0] * (m[0][1] * m[2][2] - m[0][2] * m[2][1]) + m[2][0] * (m[0][1] * m[1][2] - m[0][2] * m[1][1])); } bool invert_m3_ex(float m[3][3], const float epsilon) { float tmp[3][3]; const bool success = invert_m3_m3_ex(tmp, m, epsilon); copy_m3_m3(m, tmp); return success; } bool invert_m3_m3_ex(float m1[3][3], const float m2[3][3], const float epsilon) { float det; int a, b; bool success; BLI_assert(epsilon >= 0.0f); /* calc adjoint */ adjoint_m3_m3(m1, m2); /* then determinant old matrix! */ det = determinant_m3_array(m2); success = (fabsf(det) > epsilon); if (LIKELY(det != 0.0f)) { det = 1.0f / det; for (a = 0; a < 3; a++) { for (b = 0; b < 3; b++) { m1[a][b] *= det; } } } return success; } bool invert_m3(float m[3][3]) { float tmp[3][3]; const bool success = invert_m3_m3(tmp, m); copy_m3_m3(m, tmp); return success; } bool invert_m3_m3(float m1[3][3], const float m2[3][3]) { float det; int a, b; bool success; /* calc adjoint */ adjoint_m3_m3(m1, m2); /* then determinant old matrix! */ det = determinant_m3_array(m2); success = (det != 0.0f); if (LIKELY(det != 0.0f)) { det = 1.0f / det; for (a = 0; a < 3; a++) { for (b = 0; b < 3; b++) { m1[a][b] *= det; } } } return success; } bool invert_m4(float m[4][4]) { float tmp[4][4]; const bool success = invert_m4_m4(tmp, m); copy_m4_m4(m, tmp); return success; } bool invert_m4_m4_fallback(float inverse[4][4], const float mat[4][4]) { #ifndef MATH_STANDALONE if (EIG_invert_m4_m4(inverse, mat)) { return true; } #endif int i, j, k; double temp; float tempmat[4][4]; float max; int maxj; BLI_assert(inverse != mat); /* Set inverse to identity */ for (i = 0; i < 4; i++) { for (j = 0; j < 4; j++) { inverse[i][j] = 0; } } for (i = 0; i < 4; i++) { inverse[i][i] = 1; } /* Copy original matrix so we don't mess it up */ for (i = 0; i < 4; i++) { for (j = 0; j < 4; j++) { tempmat[i][j] = mat[i][j]; } } for (i = 0; i < 4; i++) { /* Look for row with max pivot */ max = fabsf(tempmat[i][i]); maxj = i; for (j = i + 1; j < 4; j++) { if (fabsf(tempmat[j][i]) > max) { max = fabsf(tempmat[j][i]); maxj = j; } } /* Swap rows if necessary */ if (maxj != i) { for (k = 0; k < 4; k++) { SWAP(float, tempmat[i][k], tempmat[maxj][k]); SWAP(float, inverse[i][k], inverse[maxj][k]); } } if (UNLIKELY(tempmat[i][i] == 0.0f)) { return false; /* No non-zero pivot */ } temp = (double)tempmat[i][i]; for (k = 0; k < 4; k++) { tempmat[i][k] = (float)((double)tempmat[i][k] / temp); inverse[i][k] = (float)((double)inverse[i][k] / temp); } for (j = 0; j < 4; j++) { if (j != i) { temp = tempmat[j][i]; for (k = 0; k < 4; k++) { tempmat[j][k] -= (float)((double)tempmat[i][k] * temp); inverse[j][k] -= (float)((double)inverse[i][k] * temp); } } } } return true; } bool invert_m4_m4(float inverse[4][4], const float mat[4][4]) { #ifndef MATH_STANDALONE /* Use optimized matrix inverse from Eigen, since performance * impact of this function is significant in complex rigs. */ return EIG_invert_m4_m4(inverse, mat); #else return invert_m4_m4_fallback(inverse, mat); #endif } void mul_m4_m4m4_aligned_scale(float R[4][4], const float A[4][4], const float B[4][4]) { float loc_a[3], rot_a[3][3], size_a[3]; float loc_b[3], rot_b[3][3], size_b[3]; float loc_r[3], rot_r[3][3], size_r[3]; mat4_to_loc_rot_size(loc_a, rot_a, size_a, A); mat4_to_loc_rot_size(loc_b, rot_b, size_b, B); mul_v3_m4v3(loc_r, A, loc_b); mul_m3_m3m3_uniq(rot_r, rot_a, rot_b); mul_v3_v3v3(size_r, size_a, size_b); loc_rot_size_to_mat4(R, loc_r, rot_r, size_r); } void mul_m4_m4m4_split_channels(float R[4][4], const float A[4][4], const float B[4][4]) { float loc_a[3], rot_a[3][3], size_a[3]; float loc_b[3], rot_b[3][3], size_b[3]; float loc_r[3], rot_r[3][3], size_r[3]; mat4_to_loc_rot_size(loc_a, rot_a, size_a, A); mat4_to_loc_rot_size(loc_b, rot_b, size_b, B); add_v3_v3v3(loc_r, loc_a, loc_b); mul_m3_m3m3_uniq(rot_r, rot_a, rot_b); mul_v3_v3v3(size_r, size_a, size_b); loc_rot_size_to_mat4(R, loc_r, rot_r, size_r); } /****************************** Linear Algebra *******************************/ void transpose_m3(float R[3][3]) { float t; t = R[0][1]; R[0][1] = R[1][0]; R[1][0] = t; t = R[0][2]; R[0][2] = R[2][0]; R[2][0] = t; t = R[1][2]; R[1][2] = R[2][1]; R[2][1] = t; } void transpose_m3_m3(float R[3][3], const float M[3][3]) { BLI_assert(R != M); R[0][0] = M[0][0]; R[0][1] = M[1][0]; R[0][2] = M[2][0]; R[1][0] = M[0][1]; R[1][1] = M[1][1]; R[1][2] = M[2][1]; R[2][0] = M[0][2]; R[2][1] = M[1][2]; R[2][2] = M[2][2]; } void transpose_m3_m4(float R[3][3], const float M[4][4]) { BLI_assert(&R[0][0] != &M[0][0]); R[0][0] = M[0][0]; R[0][1] = M[1][0]; R[0][2] = M[2][0]; R[1][0] = M[0][1]; R[1][1] = M[1][1]; R[1][2] = M[2][1]; R[2][0] = M[0][2]; R[2][1] = M[1][2]; R[2][2] = M[2][2]; } void transpose_m4(float R[4][4]) { float t; t = R[0][1]; R[0][1] = R[1][0]; R[1][0] = t; t = R[0][2]; R[0][2] = R[2][0]; R[2][0] = t; t = R[0][3]; R[0][3] = R[3][0]; R[3][0] = t; t = R[1][2]; R[1][2] = R[2][1]; R[2][1] = t; t = R[1][3]; R[1][3] = R[3][1]; R[3][1] = t; t = R[2][3]; R[2][3] = R[3][2]; R[3][2] = t; } void transpose_m4_m4(float R[4][4], const float M[4][4]) { BLI_assert(R != M); R[0][0] = M[0][0]; R[0][1] = M[1][0]; R[0][2] = M[2][0]; R[0][3] = M[3][0]; R[1][0] = M[0][1]; R[1][1] = M[1][1]; R[1][2] = M[2][1]; R[1][3] = M[3][1]; R[2][0] = M[0][2]; R[2][1] = M[1][2]; R[2][2] = M[2][2]; R[2][3] = M[3][2]; R[3][0] = M[0][3]; R[3][1] = M[1][3]; R[3][2] = M[2][3]; R[3][3] = M[3][3]; } bool compare_m4m4(const float mat1[4][4], const float mat2[4][4], float limit) { if (compare_v4v4(mat1[0], mat2[0], limit)) { if (compare_v4v4(mat1[1], mat2[1], limit)) { if (compare_v4v4(mat1[2], mat2[2], limit)) { if (compare_v4v4(mat1[3], mat2[3], limit)) { return true; } } } } return false; } void orthogonalize_m3(float R[3][3], int axis) { float size[3]; mat3_to_size(size, R); normalize_v3(R[axis]); switch (axis) { case 0: if (dot_v3v3(R[0], R[1]) < 1) { cross_v3_v3v3(R[2], R[0], R[1]); normalize_v3(R[2]); cross_v3_v3v3(R[1], R[2], R[0]); } else if (dot_v3v3(R[0], R[2]) < 1) { cross_v3_v3v3(R[1], R[2], R[0]); normalize_v3(R[1]); cross_v3_v3v3(R[2], R[0], R[1]); } else { float vec[3]; vec[0] = R[0][1]; vec[1] = R[0][2]; vec[2] = R[0][0]; cross_v3_v3v3(R[2], R[0], vec); normalize_v3(R[2]); cross_v3_v3v3(R[1], R[2], R[0]); } break; case 1: if (dot_v3v3(R[1], R[0]) < 1) { cross_v3_v3v3(R[2], R[0], R[1]); normalize_v3(R[2]); cross_v3_v3v3(R[0], R[1], R[2]); } else if (dot_v3v3(R[0], R[2]) < 1) { cross_v3_v3v3(R[0], R[1], R[2]); normalize_v3(R[0]); cross_v3_v3v3(R[2], R[0], R[1]); } else { float vec[3]; vec[0] = R[1][1]; vec[1] = R[1][2]; vec[2] = R[1][0]; cross_v3_v3v3(R[0], R[1], vec); normalize_v3(R[0]); cross_v3_v3v3(R[2], R[0], R[1]); } break; case 2: if (dot_v3v3(R[2], R[0]) < 1) { cross_v3_v3v3(R[1], R[2], R[0]); normalize_v3(R[1]); cross_v3_v3v3(R[0], R[1], R[2]); } else if (dot_v3v3(R[2], R[1]) < 1) { cross_v3_v3v3(R[0], R[1], R[2]); normalize_v3(R[0]); cross_v3_v3v3(R[1], R[2], R[0]); } else { float vec[3]; vec[0] = R[2][1]; vec[1] = R[2][2]; vec[2] = R[2][0]; cross_v3_v3v3(R[0], vec, R[2]); normalize_v3(R[0]); cross_v3_v3v3(R[1], R[2], R[0]); } break; default: BLI_assert_unreachable(); break; } mul_v3_fl(R[0], size[0]); mul_v3_fl(R[1], size[1]); mul_v3_fl(R[2], size[2]); } void orthogonalize_m4(float R[4][4], int axis) { float size[3]; mat4_to_size(size, R); normalize_v3(R[axis]); switch (axis) { case 0: if (dot_v3v3(R[0], R[1]) < 1) { cross_v3_v3v3(R[2], R[0], R[1]); normalize_v3(R[2]); cross_v3_v3v3(R[1], R[2], R[0]); } else if (dot_v3v3(R[0], R[2]) < 1) { cross_v3_v3v3(R[1], R[2], R[0]); normalize_v3(R[1]); cross_v3_v3v3(R[2], R[0], R[1]); } else { float vec[3]; vec[0] = R[0][1]; vec[1] = R[0][2]; vec[2] = R[0][0]; cross_v3_v3v3(R[2], R[0], vec); normalize_v3(R[2]); cross_v3_v3v3(R[1], R[2], R[0]); } break; case 1: if (dot_v3v3(R[1], R[0]) < 1) { cross_v3_v3v3(R[2], R[0], R[1]); normalize_v3(R[2]); cross_v3_v3v3(R[0], R[1], R[2]); } else if (dot_v3v3(R[0], R[2]) < 1) { cross_v3_v3v3(R[0], R[1], R[2]); normalize_v3(R[0]); cross_v3_v3v3(R[2], R[0], R[1]); } else { float vec[3]; vec[0] = R[1][1]; vec[1] = R[1][2]; vec[2] = R[1][0]; cross_v3_v3v3(R[0], R[1], vec); normalize_v3(R[0]); cross_v3_v3v3(R[2], R[0], R[1]); } break; case 2: if (dot_v3v3(R[2], R[0]) < 1) { cross_v3_v3v3(R[1], R[2], R[0]); normalize_v3(R[1]); cross_v3_v3v3(R[0], R[1], R[2]); } else if (dot_v3v3(R[2], R[1]) < 1) { cross_v3_v3v3(R[0], R[1], R[2]); normalize_v3(R[0]); cross_v3_v3v3(R[1], R[2], R[0]); } else { float vec[3]; vec[0] = R[2][1]; vec[1] = R[2][2]; vec[2] = R[2][0]; cross_v3_v3v3(R[0], vec, R[2]); normalize_v3(R[0]); cross_v3_v3v3(R[1], R[2], R[0]); } break; default: BLI_assert_unreachable(); break; } mul_v3_fl(R[0], size[0]); mul_v3_fl(R[1], size[1]); mul_v3_fl(R[2], size[2]); } /** Make an orthonormal basis around v1 in a way that is stable and symmetric. */ static void orthogonalize_stable(float v1[3], float v2[3], float v3[3], bool normalize) { /* Make secondary axis vectors orthogonal to the primary via * plane projection, which preserves the determinant. */ float len_sq_v1 = len_squared_v3(v1); if (len_sq_v1 > 0.0f) { madd_v3_v3fl(v2, v1, -dot_v3v3(v2, v1) / len_sq_v1); madd_v3_v3fl(v3, v1, -dot_v3v3(v3, v1) / len_sq_v1); if (normalize) { mul_v3_fl(v1, 1.0f / sqrtf(len_sq_v1)); } } /* Make secondary axis vectors orthogonal relative to each other. */ float norm_v2[3], norm_v3[3], tmp[3]; float length_v2 = normalize_v3_v3(norm_v2, v2); float length_v3 = normalize_v3_v3(norm_v3, v3); float cos_angle = dot_v3v3(norm_v2, norm_v3); float abs_cos_angle = fabsf(cos_angle); /* Apply correction if the shear angle is significant, and not degenerate. */ if (abs_cos_angle > 1e-4f && abs_cos_angle < 1.0f - FLT_EPSILON) { /* Adjust v2 by half of the necessary angle correction. * Thus the angle change is the same for both axis directions. */ float angle = acosf(cos_angle); float target_angle = angle + ((float)M_PI_2 - angle) / 2; madd_v3_v3fl(norm_v2, norm_v3, -cos_angle); mul_v3_fl(norm_v2, sinf(target_angle) / len_v3(norm_v2)); madd_v3_v3fl(norm_v2, norm_v3, cosf(target_angle)); /* Make v3 orthogonal. */ cross_v3_v3v3(tmp, norm_v2, norm_v3); cross_v3_v3v3(norm_v3, tmp, norm_v2); normalize_v3(norm_v3); /* Re-apply scale, preserving area and proportion. */ if (!normalize) { float scale_fac = sqrtf(sinf(angle)); mul_v3_v3fl(v2, norm_v2, length_v2 * scale_fac); mul_v3_v3fl(v3, norm_v3, length_v3 * scale_fac); } } if (normalize) { copy_v3_v3(v2, norm_v2); copy_v3_v3(v3, norm_v3); } } void orthogonalize_m3_stable(float R[3][3], int axis, bool normalize) { switch (axis) { case 0: orthogonalize_stable(R[0], R[1], R[2], normalize); break; case 1: orthogonalize_stable(R[1], R[0], R[2], normalize); break; case 2: orthogonalize_stable(R[2], R[0], R[1], normalize); break; default: BLI_assert_unreachable(); break; } } void orthogonalize_m4_stable(float R[4][4], int axis, bool normalize) { switch (axis) { case 0: orthogonalize_stable(R[0], R[1], R[2], normalize); break; case 1: orthogonalize_stable(R[1], R[0], R[2], normalize); break; case 2: orthogonalize_stable(R[2], R[0], R[1], normalize); break; default: BLI_assert_unreachable(); break; } } /* -------------------------------------------------------------------- */ /** \name Orthogonalize Matrix Zeroed Axes * * Set any zeroed axes to an orthogonal vector in relation to the other axes. * * Typically used so matrix inversion can be performed. * * \note If an object has a zero scaled axis, this function can be used to "clean" the matrix * to behave as if the scale on that axis was `unit_length`. So it can be inverted * or used in matrix multiply without creating degenerate matrices, see: T50103 * \{ */ /** * \return true if any axis needed to be modified. */ static bool orthogonalize_m3_zero_axes_impl(float *mat[3], const float unit_length) { enum { X = 1 << 0, Y = 1 << 1, Z = 1 << 2 }; int flag = 0; for (int i = 0; i < 3; i++) { flag |= (len_squared_v3(mat[i]) == 0.0f) ? (1 << i) : 0; } /* Either all or none are zero, either way we can't properly resolve this * since we need to fill invalid axes from valid ones. */ if (ELEM(flag, 0, X | Y | Z)) { return false; } switch (flag) { case X | Y: { ortho_v3_v3(mat[1], mat[2]); ATTR_FALLTHROUGH; } case X: { cross_v3_v3v3(mat[0], mat[1], mat[2]); break; } case Y | Z: { ortho_v3_v3(mat[2], mat[0]); ATTR_FALLTHROUGH; } case Y: { cross_v3_v3v3(mat[1], mat[0], mat[2]); break; } case Z | X: { ortho_v3_v3(mat[0], mat[1]); ATTR_FALLTHROUGH; } case Z: { cross_v3_v3v3(mat[2], mat[0], mat[1]); break; } default: { BLI_assert_unreachable(); } } for (int i = 0; i < 3; i++) { if (flag & (1 << i)) { if (UNLIKELY(normalize_v3_length(mat[i], unit_length) == 0.0f)) { mat[i][i] = unit_length; } } } return true; } bool orthogonalize_m3_zero_axes(float m[3][3], const float unit_length) { return orthogonalize_m3_zero_axes_impl((float *[3]){UNPACK3(m)}, unit_length); } bool orthogonalize_m4_zero_axes(float m[4][4], const float unit_length) { return orthogonalize_m3_zero_axes_impl((float *[3]){UNPACK3(m)}, unit_length); } /** \} */ bool is_orthogonal_m3(const float m[3][3]) { int i, j; for (i = 0; i < 3; i++) { for (j = 0; j < i; j++) { if (fabsf(dot_v3v3(m[i], m[j])) > 1e-5f) { return false; } } } return true; } bool is_orthogonal_m4(const float m[4][4]) { int i, j; for (i = 0; i < 4; i++) { for (j = 0; j < i; j++) { if (fabsf(dot_v4v4(m[i], m[j])) > 1e-5f) { return false; } } } return true; } bool is_orthonormal_m3(const float m[3][3]) { if (is_orthogonal_m3(m)) { int i; for (i = 0; i < 3; i++) { if (fabsf(dot_v3v3(m[i], m[i]) - 1) > 1e-5f) { return false; } } return true; } return false; } bool is_orthonormal_m4(const float m[4][4]) { if (is_orthogonal_m4(m)) { int i; for (i = 0; i < 4; i++) { if (fabsf(dot_v4v4(m[i], m[i]) - 1) > 1e-5f) { return false; } } return true; } return false; } bool is_uniform_scaled_m3(const float m[3][3]) { const float eps = 1e-7f; float t[3][3]; float l1, l2, l3, l4, l5, l6; transpose_m3_m3(t, m); l1 = len_squared_v3(m[0]); l2 = len_squared_v3(m[1]); l3 = len_squared_v3(m[2]); l4 = len_squared_v3(t[0]); l5 = len_squared_v3(t[1]); l6 = len_squared_v3(t[2]); if (fabsf(l2 - l1) <= eps && fabsf(l3 - l1) <= eps && fabsf(l4 - l1) <= eps && fabsf(l5 - l1) <= eps && fabsf(l6 - l1) <= eps) { return true; } return false; } bool is_uniform_scaled_m4(const float m[4][4]) { float t[3][3]; copy_m3_m4(t, m); return is_uniform_scaled_m3(t); } void normalize_m2_ex(float R[2][2], float r_scale[2]) { int i; for (i = 0; i < 2; i++) { r_scale[i] = normalize_v2(R[i]); } } void normalize_m2(float R[2][2]) { int i; for (i = 0; i < 2; i++) { normalize_v2(R[i]); } } void normalize_m2_m2_ex(float R[2][2], const float M[2][2], float r_scale[2]) { int i; for (i = 0; i < 2; i++) { r_scale[i] = normalize_v2_v2(R[i], M[i]); } } void normalize_m2_m2(float R[2][2], const float M[2][2]) { int i; for (i = 0; i < 2; i++) { normalize_v2_v2(R[i], M[i]); } } void normalize_m3_ex(float R[3][3], float r_scale[3]) { int i; for (i = 0; i < 3; i++) { r_scale[i] = normalize_v3(R[i]); } } void normalize_m3(float R[3][3]) { int i; for (i = 0; i < 3; i++) { normalize_v3(R[i]); } } void normalize_m3_m3_ex(float R[3][3], const float M[3][3], float r_scale[3]) { int i; for (i = 0; i < 3; i++) { r_scale[i] = normalize_v3_v3(R[i], M[i]); } } void normalize_m3_m3(float R[3][3], const float M[3][3]) { int i; for (i = 0; i < 3; i++) { normalize_v3_v3(R[i], M[i]); } } void normalize_m4_ex(float R[4][4], float r_scale[3]) { int i; for (i = 0; i < 3; i++) { r_scale[i] = normalize_v3(R[i]); if (r_scale[i] != 0.0f) { R[i][3] /= r_scale[i]; } } } void normalize_m4(float R[4][4]) { int i; for (i = 0; i < 3; i++) { float len = normalize_v3(R[i]); if (len != 0.0f) { R[i][3] /= len; } } } void normalize_m4_m4_ex(float rmat[4][4], const float mat[4][4], float r_scale[3]) { int i; for (i = 0; i < 3; i++) { r_scale[i] = normalize_v3_v3(rmat[i], mat[i]); rmat[i][3] = (r_scale[i] != 0.0f) ? (mat[i][3] / r_scale[i]) : mat[i][3]; } copy_v4_v4(rmat[3], mat[3]); } void normalize_m4_m4(float rmat[4][4], const float mat[4][4]) { int i; for (i = 0; i < 3; i++) { float len = normalize_v3_v3(rmat[i], mat[i]); rmat[i][3] = (len != 0.0f) ? (mat[i][3] / len) : mat[i][3]; } copy_v4_v4(rmat[3], mat[3]); } void adjoint_m2_m2(float R[2][2], const float M[2][2]) { BLI_assert(R != M); R[0][0] = M[1][1]; R[0][1] = -M[0][1]; R[1][0] = -M[1][0]; R[1][1] = M[0][0]; } void adjoint_m3_m3(float R[3][3], const float M[3][3]) { BLI_assert(R != M); R[0][0] = M[1][1] * M[2][2] - M[1][2] * M[2][1]; R[0][1] = -M[0][1] * M[2][2] + M[0][2] * M[2][1]; R[0][2] = M[0][1] * M[1][2] - M[0][2] * M[1][1]; R[1][0] = -M[1][0] * M[2][2] + M[1][2] * M[2][0]; R[1][1] = M[0][0] * M[2][2] - M[0][2] * M[2][0]; R[1][2] = -M[0][0] * M[1][2] + M[0][2] * M[1][0]; R[2][0] = M[1][0] * M[2][1] - M[1][1] * M[2][0]; R[2][1] = -M[0][0] * M[2][1] + M[0][1] * M[2][0]; R[2][2] = M[0][0] * M[1][1] - M[0][1] * M[1][0]; } void adjoint_m4_m4(float R[4][4], const float M[4][4]) /* out = ADJ(in) */ { float a1, a2, a3, a4, b1, b2, b3, b4; float c1, c2, c3, c4, d1, d2, d3, d4; a1 = M[0][0]; b1 = M[0][1]; c1 = M[0][2]; d1 = M[0][3]; a2 = M[1][0]; b2 = M[1][1]; c2 = M[1][2]; d2 = M[1][3]; a3 = M[2][0]; b3 = M[2][1]; c3 = M[2][2]; d3 = M[2][3]; a4 = M[3][0]; b4 = M[3][1]; c4 = M[3][2]; d4 = M[3][3]; R[0][0] = determinant_m3(b2, b3, b4, c2, c3, c4, d2, d3, d4); R[1][0] = -determinant_m3(a2, a3, a4, c2, c3, c4, d2, d3, d4); R[2][0] = determinant_m3(a2, a3, a4, b2, b3, b4, d2, d3, d4); R[3][0] = -determinant_m3(a2, a3, a4, b2, b3, b4, c2, c3, c4); R[0][1] = -determinant_m3(b1, b3, b4, c1, c3, c4, d1, d3, d4); R[1][1] = determinant_m3(a1, a3, a4, c1, c3, c4, d1, d3, d4); R[2][1] = -determinant_m3(a1, a3, a4, b1, b3, b4, d1, d3, d4); R[3][1] = determinant_m3(a1, a3, a4, b1, b3, b4, c1, c3, c4); R[0][2] = determinant_m3(b1, b2, b4, c1, c2, c4, d1, d2, d4); R[1][2] = -determinant_m3(a1, a2, a4, c1, c2, c4, d1, d2, d4); R[2][2] = determinant_m3(a1, a2, a4, b1, b2, b4, d1, d2, d4); R[3][2] = -determinant_m3(a1, a2, a4, b1, b2, b4, c1, c2, c4); R[0][3] = -determinant_m3(b1, b2, b3, c1, c2, c3, d1, d2, d3); R[1][3] = determinant_m3(a1, a2, a3, c1, c2, c3, d1, d2, d3); R[2][3] = -determinant_m3(a1, a2, a3, b1, b2, b3, d1, d2, d3); R[3][3] = determinant_m3(a1, a2, a3, b1, b2, b3, c1, c2, c3); } float determinant_m2(float a, float b, float c, float d) { return a * d - b * c; } float determinant_m3( float a1, float a2, float a3, float b1, float b2, float b3, float c1, float c2, float c3) { float ans; ans = (a1 * determinant_m2(b2, b3, c2, c3) - b1 * determinant_m2(a2, a3, c2, c3) + c1 * determinant_m2(a2, a3, b2, b3)); return ans; } float determinant_m4(const float m[4][4]) { float ans; float a1, a2, a3, a4, b1, b2, b3, b4, c1, c2, c3, c4, d1, d2, d3, d4; a1 = m[0][0]; b1 = m[0][1]; c1 = m[0][2]; d1 = m[0][3]; a2 = m[1][0]; b2 = m[1][1]; c2 = m[1][2]; d2 = m[1][3]; a3 = m[2][0]; b3 = m[2][1]; c3 = m[2][2]; d3 = m[2][3]; a4 = m[3][0]; b4 = m[3][1]; c4 = m[3][2]; d4 = m[3][3]; ans = (a1 * determinant_m3(b2, b3, b4, c2, c3, c4, d2, d3, d4) - b1 * determinant_m3(a2, a3, a4, c2, c3, c4, d2, d3, d4) + c1 * determinant_m3(a2, a3, a4, b2, b3, b4, d2, d3, d4) - d1 * determinant_m3(a2, a3, a4, b2, b3, b4, c2, c3, c4)); return ans; } /****************************** Transformations ******************************/ void size_to_mat3(float R[3][3], const float size[3]) { R[0][0] = size[0]; R[0][1] = 0.0f; R[0][2] = 0.0f; R[1][1] = size[1]; R[1][0] = 0.0f; R[1][2] = 0.0f; R[2][2] = size[2]; R[2][1] = 0.0f; R[2][0] = 0.0f; } void size_to_mat4(float R[4][4], const float size[3]) { R[0][0] = size[0]; R[0][1] = 0.0f; R[0][2] = 0.0f; R[0][3] = 0.0f; R[1][0] = 0.0f; R[1][1] = size[1]; R[1][2] = 0.0f; R[1][3] = 0.0f; R[2][0] = 0.0f; R[2][1] = 0.0f; R[2][2] = size[2]; R[2][3] = 0.0f; R[3][0] = 0.0f; R[3][1] = 0.0f; R[3][2] = 0.0f; R[3][3] = 1.0f; } void mat3_to_size(float size[3], const float M[3][3]) { size[0] = len_v3(M[0]); size[1] = len_v3(M[1]); size[2] = len_v3(M[2]); } void mat4_to_size(float size[3], const float M[4][4]) { size[0] = len_v3(M[0]); size[1] = len_v3(M[1]); size[2] = len_v3(M[2]); } float mat3_to_size_max_axis(const float M[3][3]) { return sqrtf(max_fff(len_squared_v3(M[0]), len_squared_v3(M[1]), len_squared_v3(M[2]))); } float mat4_to_size_max_axis(const float M[4][4]) { return sqrtf(max_fff(len_squared_v3(M[0]), len_squared_v3(M[1]), len_squared_v3(M[2]))); } void mat4_to_size_fix_shear(float size[3], const float M[4][4]) { mat4_to_size(size, M); float volume = size[0] * size[1] * size[2]; if (volume != 0.0f) { mul_v3_fl(size, cbrtf(fabsf(mat4_to_volume_scale(M) / volume))); } } float mat3_to_volume_scale(const float mat[3][3]) { return determinant_m3_array(mat); } float mat4_to_volume_scale(const float mat[4][4]) { return determinant_m4_mat3_array(mat); } float mat3_to_scale(const float mat[3][3]) { /* unit length vector */ float unit_vec[3]; copy_v3_fl(unit_vec, (float)M_SQRT1_3); mul_m3_v3(mat, unit_vec); return len_v3(unit_vec); } float mat4_to_scale(const float mat[4][4]) { /* unit length vector */ float unit_vec[3]; copy_v3_fl(unit_vec, (float)M_SQRT1_3); mul_mat3_m4_v3(mat, unit_vec); return len_v3(unit_vec); } float mat4_to_xy_scale(const float M[4][4]) { /* unit length vector in xy plane */ float unit_vec[3] = {(float)M_SQRT1_2, (float)M_SQRT1_2, 0.0f}; mul_mat3_m4_v3(M, unit_vec); return len_v3(unit_vec); } void mat3_to_rot_size(float rot[3][3], float size[3], const float mat3[3][3]) { /* keep rot as a 3x3 matrix, the caller can convert into a quat or euler */ size[0] = normalize_v3_v3(rot[0], mat3[0]); size[1] = normalize_v3_v3(rot[1], mat3[1]); size[2] = normalize_v3_v3(rot[2], mat3[2]); if (UNLIKELY(is_negative_m3(rot))) { negate_m3(rot); negate_v3(size); } } void mat4_to_rot(float rot[3][3], const float wmat[4][4]) { normalize_v3_v3(rot[0], wmat[0]); normalize_v3_v3(rot[1], wmat[1]); normalize_v3_v3(rot[2], wmat[2]); if (UNLIKELY(is_negative_m3(rot))) { negate_m3(rot); } } void mat4_to_loc_rot_size(float loc[3], float rot[3][3], float size[3], const float wmat[4][4]) { float mat3[3][3]; /* wmat -> 3x3 */ copy_m3_m4(mat3, wmat); mat3_to_rot_size(rot, size, mat3); /* location */ copy_v3_v3(loc, wmat[3]); } void mat4_to_loc_quat(float loc[3], float quat[4], const float wmat[4][4]) { float mat3[3][3]; float mat3_n[3][3]; /* normalized mat3 */ copy_m3_m4(mat3, wmat); normalize_m3_m3(mat3_n, mat3); /* So scale doesn't interfere with rotation T24291. */ /* FIXME: this is a workaround for negative matrix not working for rotation conversion. */ if (is_negative_m3(mat3)) { negate_m3(mat3_n); } mat3_normalized_to_quat(quat, mat3_n); copy_v3_v3(loc, wmat[3]); } void mat4_decompose(float loc[3], float quat[4], float size[3], const float wmat[4][4]) { float rot[3][3]; mat4_to_loc_rot_size(loc, rot, size, wmat); mat3_normalized_to_quat(quat, rot); } /** * Right polar decomposition: * M = UP * * U is the 'rotation'-like component, the closest orthogonal matrix to M. * P is the 'scaling'-like component, defined in U space. * * See https://en.wikipedia.org/wiki/Polar_decomposition for more. */ #ifndef MATH_STANDALONE void mat3_polar_decompose(const float mat3[3][3], float r_U[3][3], float r_P[3][3]) { /* From svd decomposition (M = WSV*), we have: * U = WV* * P = VSV* */ float W[3][3], S[3][3], V[3][3], Vt[3][3]; float sval[3]; BLI_svd_m3(mat3, W, sval, V); size_to_mat3(S, sval); transpose_m3_m3(Vt, V); mul_m3_m3m3(r_U, W, Vt); mul_m3_series(r_P, V, S, Vt); } #endif void scale_m3_fl(float R[3][3], float scale) { R[0][0] = R[1][1] = R[2][2] = scale; R[0][1] = R[0][2] = 0.0; R[1][0] = R[1][2] = 0.0; R[2][0] = R[2][1] = 0.0; } void scale_m4_fl(float R[4][4], float scale) { R[0][0] = R[1][1] = R[2][2] = scale; R[3][3] = 1.0; R[0][1] = R[0][2] = R[0][3] = 0.0; R[1][0] = R[1][2] = R[1][3] = 0.0; R[2][0] = R[2][1] = R[2][3] = 0.0; R[3][0] = R[3][1] = R[3][2] = 0.0; } void scale_m4_v2(float R[4][4], const float scale[2]) { R[0][0] = scale[0]; R[1][1] = scale[1]; R[2][2] = R[3][3] = 1.0; R[0][1] = R[0][2] = R[0][3] = 0.0; R[1][0] = R[1][2] = R[1][3] = 0.0; R[2][0] = R[2][1] = R[2][3] = 0.0; R[3][0] = R[3][1] = R[3][2] = 0.0; } void translate_m4(float mat[4][4], float Tx, float Ty, float Tz) { mat[3][0] += (Tx * mat[0][0] + Ty * mat[1][0] + Tz * mat[2][0]); mat[3][1] += (Tx * mat[0][1] + Ty * mat[1][1] + Tz * mat[2][1]); mat[3][2] += (Tx * mat[0][2] + Ty * mat[1][2] + Tz * mat[2][2]); } void rotate_m4(float mat[4][4], const char axis, const float angle) { const float angle_cos = cosf(angle); const float angle_sin = sinf(angle); BLI_assert(axis >= 'X' && axis <= 'Z'); switch (axis) { case 'X': for (int col = 0; col < 4; col++) { float temp = angle_cos * mat[1][col] + angle_sin * mat[2][col]; mat[2][col] = -angle_sin * mat[1][col] + angle_cos * mat[2][col]; mat[1][col] = temp; } break; case 'Y': for (int col = 0; col < 4; col++) { float temp = angle_cos * mat[0][col] - angle_sin * mat[2][col]; mat[2][col] = angle_sin * mat[0][col] + angle_cos * mat[2][col]; mat[0][col] = temp; } break; case 'Z': for (int col = 0; col < 4; col++) { float temp = angle_cos * mat[0][col] + angle_sin * mat[1][col]; mat[1][col] = -angle_sin * mat[0][col] + angle_cos * mat[1][col]; mat[0][col] = temp; } break; default: BLI_assert_unreachable(); break; } } void rescale_m4(float mat[4][4], const float scale[3]) { mul_v3_fl(mat[0], scale[0]); mul_v3_fl(mat[1], scale[1]); mul_v3_fl(mat[2], scale[2]); } void transform_pivot_set_m4(float mat[4][4], const float pivot[3]) { float tmat[4][4]; unit_m4(tmat); copy_v3_v3(tmat[3], pivot); mul_m4_m4m4(mat, tmat, mat); /* invert the matrix */ negate_v3(tmat[3]); mul_m4_m4m4(mat, mat, tmat); } void blend_m3_m3m3(float out[3][3], const float dst[3][3], const float src[3][3], const float srcweight) { float srot[3][3], drot[3][3]; float squat[4], dquat[4], fquat[4]; float sscale[3], dscale[3], fsize[3]; float rmat[3][3], smat[3][3]; mat3_to_rot_size(drot, dscale, dst); mat3_to_rot_size(srot, sscale, src); mat3_normalized_to_quat(dquat, drot); mat3_normalized_to_quat(squat, srot); /* do blending */ interp_qt_qtqt(fquat, dquat, squat, srcweight); interp_v3_v3v3(fsize, dscale, sscale, srcweight); /* compose new matrix */ quat_to_mat3(rmat, fquat); size_to_mat3(smat, fsize); mul_m3_m3m3(out, rmat, smat); } void blend_m4_m4m4(float out[4][4], const float dst[4][4], const float src[4][4], const float srcweight) { float sloc[3], dloc[3], floc[3]; float srot[3][3], drot[3][3]; float squat[4], dquat[4], fquat[4]; float sscale[3], dscale[3], fsize[3]; mat4_to_loc_rot_size(dloc, drot, dscale, dst); mat4_to_loc_rot_size(sloc, srot, sscale, src); mat3_normalized_to_quat(dquat, drot); mat3_normalized_to_quat(squat, srot); /* do blending */ interp_v3_v3v3(floc, dloc, sloc, srcweight); interp_qt_qtqt(fquat, dquat, squat, srcweight); interp_v3_v3v3(fsize, dscale, sscale, srcweight); /* compose new matrix */ loc_quat_size_to_mat4(out, floc, fquat, fsize); } /* for builds without Eigen */ #ifndef MATH_STANDALONE void interp_m3_m3m3(float R[3][3], const float A[3][3], const float B[3][3], const float t) { /* 'Rotation' component ('U' part of polar decomposition, * the closest orthogonal matrix to M3 rot/scale * transformation matrix), spherically interpolated. */ float U_A[3][3], U_B[3][3], U[3][3]; float quat_A[4], quat_B[4], quat[4]; /* 'Scaling' component ('P' part of polar decomposition, i.e. scaling in U-defined space), * linearly interpolated. */ float P_A[3][3], P_B[3][3], P[3][3]; int i; mat3_polar_decompose(A, U_A, P_A); mat3_polar_decompose(B, U_B, P_B); /* Quaternions cannot represent an axis flip. If such a singularity is detected, choose a * different decomposition of the matrix that still satisfies A = U_A * P_A but which has a * positive determinant and thus no axis flips. This resolves T77154. * * Note that a flip of two axes is just a rotation of 180 degrees around the third axis, and * three flipped axes are just an 180 degree rotation + a single axis flip. It is thus sufficient * to solve this problem for single axis flips. */ if (determinant_m3_array(U_A) < 0) { mul_m3_fl(U_A, -1.0f); mul_m3_fl(P_A, -1.0f); } if (determinant_m3_array(U_B) < 0) { mul_m3_fl(U_B, -1.0f); mul_m3_fl(P_B, -1.0f); } mat3_to_quat(quat_A, U_A); mat3_to_quat(quat_B, U_B); interp_qt_qtqt(quat, quat_A, quat_B, t); quat_to_mat3(U, quat); for (i = 0; i < 3; i++) { interp_v3_v3v3(P[i], P_A[i], P_B[i], t); } /* And we reconstruct rot/scale matrix from interpolated polar components */ mul_m3_m3m3(R, U, P); } void interp_m4_m4m4(float R[4][4], const float A[4][4], const float B[4][4], const float t) { float A3[3][3], B3[3][3], R3[3][3]; /* Location component, linearly interpolated. */ float loc_A[3], loc_B[3], loc[3]; copy_v3_v3(loc_A, A[3]); copy_v3_v3(loc_B, B[3]); interp_v3_v3v3(loc, loc_A, loc_B, t); copy_m3_m4(A3, A); copy_m3_m4(B3, B); interp_m3_m3m3(R3, A3, B3, t); copy_m4_m3(R, R3); copy_v3_v3(R[3], loc); } #endif /* MATH_STANDALONE */ bool is_negative_m3(const float mat[3][3]) { float vec[3]; cross_v3_v3v3(vec, mat[0], mat[1]); return (dot_v3v3(vec, mat[2]) < 0.0f); } bool is_negative_m4(const float mat[4][4]) { float vec[3]; cross_v3_v3v3(vec, mat[0], mat[1]); return (dot_v3v3(vec, mat[2]) < 0.0f); } bool is_zero_m3(const float mat[3][3]) { return (is_zero_v3(mat[0]) && is_zero_v3(mat[1]) && is_zero_v3(mat[2])); } bool is_zero_m4(const float mat[4][4]) { return (is_zero_v4(mat[0]) && is_zero_v4(mat[1]) && is_zero_v4(mat[2]) && is_zero_v4(mat[3])); } bool equals_m3m3(const float mat1[3][3], const float mat2[3][3]) { return (equals_v3v3(mat1[0], mat2[0]) && equals_v3v3(mat1[1], mat2[1]) && equals_v3v3(mat1[2], mat2[2])); } bool equals_m4m4(const float mat1[4][4], const float mat2[4][4]) { return (equals_v4v4(mat1[0], mat2[0]) && equals_v4v4(mat1[1], mat2[1]) && equals_v4v4(mat1[2], mat2[2]) && equals_v4v4(mat1[3], mat2[3])); } void loc_rot_size_to_mat4(float R[4][4], const float loc[3], const float rot[3][3], const float size[3]) { copy_m4_m3(R, rot); rescale_m4(R, size); copy_v3_v3(R[3], loc); } void loc_eul_size_to_mat4(float R[4][4], const float loc[3], const float eul[3], const float size[3]) { float rmat[3][3], smat[3][3], tmat[3][3]; /* initialize new matrix */ unit_m4(R); /* make rotation + scaling part */ eul_to_mat3(rmat, eul); size_to_mat3(smat, size); mul_m3_m3m3(tmat, rmat, smat); /* Copy rot/scale part to output matrix. */ copy_m4_m3(R, tmat); /* copy location to matrix */ R[3][0] = loc[0]; R[3][1] = loc[1]; R[3][2] = loc[2]; } void loc_eulO_size_to_mat4(float R[4][4], const float loc[3], const float eul[3], const float size[3], const short rotOrder) { float rmat[3][3], smat[3][3], tmat[3][3]; /* Initialize new matrix. */ unit_m4(R); /* Make rotation + scaling part. */ eulO_to_mat3(rmat, eul, rotOrder); size_to_mat3(smat, size); mul_m3_m3m3(tmat, rmat, smat); /* Copy rot/scale part to output matrix. */ copy_m4_m3(R, tmat); /* Copy location to matrix. */ R[3][0] = loc[0]; R[3][1] = loc[1]; R[3][2] = loc[2]; } void loc_quat_size_to_mat4(float R[4][4], const float loc[3], const float quat[4], const float size[3]) { float rmat[3][3], smat[3][3], tmat[3][3]; /* initialize new matrix */ unit_m4(R); /* make rotation + scaling part */ quat_to_mat3(rmat, quat); size_to_mat3(smat, size); mul_m3_m3m3(tmat, rmat, smat); /* Copy rot/scale part to output matrix. */ copy_m4_m3(R, tmat); /* copy location to matrix */ R[3][0] = loc[0]; R[3][1] = loc[1]; R[3][2] = loc[2]; } void loc_axisangle_size_to_mat4( float R[4][4], const float loc[3], const float axis[3], const float angle, const float size[3]) { float q[4]; axis_angle_to_quat(q, axis, angle); loc_quat_size_to_mat4(R, loc, q, size); } /*********************************** Other ***********************************/ void print_m3(const char *str, const float m[3][3]) { printf("%s\n", str); printf("%f %f %f\n", m[0][0], m[1][0], m[2][0]); printf("%f %f %f\n", m[0][1], m[1][1], m[2][1]); printf("%f %f %f\n", m[0][2], m[1][2], m[2][2]); printf("\n"); } void print_m4(const char *str, const float m[4][4]) { printf("%s\n", str); printf("%f %f %f %f\n", m[0][0], m[1][0], m[2][0], m[3][0]); printf("%f %f %f %f\n", m[0][1], m[1][1], m[2][1], m[3][1]); printf("%f %f %f %f\n", m[0][2], m[1][2], m[2][2], m[3][2]); printf("%f %f %f %f\n", m[0][3], m[1][3], m[2][3], m[3][3]); printf("\n"); } void svd_m4(float U[4][4], float s[4], float V[4][4], float A_[4][4]) { /* NOTE: originally from TNT (template numeric toolkit) matrix library. * https://math.nist.gov/tnt */ float A[4][4]; float work1[4], work2[4]; int m = 4; int n = 4; int maxiter = 200; int nu = min_ii(m, n); float *work = work1; float *e = work2; float eps; int i = 0, j = 0, k = 0, p, pp, iter; /* Reduce A to bidiagonal form, storing the diagonal elements * in s and the super-diagonal elements in e. */ int nct = min_ii(m - 1, n); int nrt = max_ii(0, min_ii(n - 2, m)); copy_m4_m4(A, A_); zero_m4(U); zero_v4(s); for (k = 0; k < max_ii(nct, nrt); k++) { if (k < nct) { /* Compute the transformation for the k-th column and * place the k-th diagonal in s[k]. * Compute 2-norm of k-th column without under/overflow. */ s[k] = 0; for (i = k; i < m; i++) { s[k] = hypotf(s[k], A[i][k]); } if (s[k] != 0.0f) { float invsk; if (A[k][k] < 0.0f) { s[k] = -s[k]; } invsk = 1.0f / s[k]; for (i = k; i < m; i++) { A[i][k] *= invsk; } A[k][k] += 1.0f; } s[k] = -s[k]; } for (j = k + 1; j < n; j++) { if ((k < nct) && (s[k] != 0.0f)) { /* Apply the transformation. */ float t = 0; for (i = k; i < m; i++) { t += A[i][k] * A[i][j]; } t = -t / A[k][k]; for (i = k; i < m; i++) { A[i][j] += t * A[i][k]; } } /* Place the k-th row of A into e for the */ /* subsequent calculation of the row transformation. */ e[j] = A[k][j]; } if (k < nct) { /* Place the transformation in U for subsequent back * multiplication. */ for (i = k; i < m; i++) { U[i][k] = A[i][k]; } } if (k < nrt) { /* Compute the k-th row transformation and place the * k-th super-diagonal in e[k]. * Compute 2-norm without under/overflow. */ e[k] = 0; for (i = k + 1; i < n; i++) { e[k] = hypotf(e[k], e[i]); } if (e[k] != 0.0f) { float invek; if (e[k + 1] < 0.0f) { e[k] = -e[k]; } invek = 1.0f / e[k]; for (i = k + 1; i < n; i++) { e[i] *= invek; } e[k + 1] += 1.0f; } e[k] = -e[k]; if ((k + 1 < m) & (e[k] != 0.0f)) { float invek1; /* Apply the transformation. */ for (i = k + 1; i < m; i++) { work[i] = 0.0f; } for (j = k + 1; j < n; j++) { for (i = k + 1; i < m; i++) { work[i] += e[j] * A[i][j]; } } invek1 = 1.0f / e[k + 1]; for (j = k + 1; j < n; j++) { float t = -e[j] * invek1; for (i = k + 1; i < m; i++) { A[i][j] += t * work[i]; } } } /* Place the transformation in V for subsequent * back multiplication. */ for (i = k + 1; i < n; i++) { V[i][k] = e[i]; } } } /* Set up the final bidiagonal matrix or order p. */ p = min_ii(n, m + 1); if (nct < n) { s[nct] = A[nct][nct]; } if (m < p) { s[p - 1] = 0.0f; } if (nrt + 1 < p) { e[nrt] = A[nrt][p - 1]; } e[p - 1] = 0.0f; /* If required, generate U. */ for (j = nct; j < nu; j++) { for (i = 0; i < m; i++) { U[i][j] = 0.0f; } U[j][j] = 1.0f; } for (k = nct - 1; k >= 0; k--) { if (s[k] != 0.0f) { for (j = k + 1; j < nu; j++) { float t = 0; for (i = k; i < m; i++) { t += U[i][k] * U[i][j]; } t = -t / U[k][k]; for (i = k; i < m; i++) { U[i][j] += t * U[i][k]; } } for (i = k; i < m; i++) { U[i][k] = -U[i][k]; } U[k][k] = 1.0f + U[k][k]; for (i = 0; i < k - 1; i++) { U[i][k] = 0.0f; } } else { for (i = 0; i < m; i++) { U[i][k] = 0.0f; } U[k][k] = 1.0f; } } /* If required, generate V. */ for (k = n - 1; k >= 0; k--) { if ((k < nrt) & (e[k] != 0.0f)) { for (j = k + 1; j < nu; j++) { float t = 0; for (i = k + 1; i < n; i++) { t += V[i][k] * V[i][j]; } t = -t / V[k + 1][k]; for (i = k + 1; i < n; i++) { V[i][j] += t * V[i][k]; } } } for (i = 0; i < n; i++) { V[i][k] = 0.0f; } V[k][k] = 1.0f; } /* Main iteration loop for the singular values. */ pp = p - 1; iter = 0; eps = powf(2.0f, -52.0f); while (p > 0) { int kase = 0; /* Test for maximum iterations to avoid infinite loop */ if (maxiter == 0) { break; } maxiter--; /* This section of the program inspects for * negligible elements in the s and e arrays. On * completion the variables kase and k are set as follows. * * kase = 1: if s(p) and e[k - 1] are negligible and k
= -1; k--) { if (k == -1) { break; } if (fabsf(e[k]) <= eps * (fabsf(s[k]) + fabsf(s[k + 1]))) { e[k] = 0.0f; break; } } if (k == p - 2) { kase = 4; } else { int ks; for (ks = p - 1; ks >= k; ks--) { float t; if (ks == k) { break; } t = (ks != p ? fabsf(e[ks]) : 0.0f) + (ks != k + 1 ? fabsf(e[ks - 1]) : 0.0f); if (fabsf(s[ks]) <= eps * t) { s[ks] = 0.0f; break; } } if (ks == k) { kase = 3; } else if (ks == p - 1) { kase = 1; } else { kase = 2; k = ks; } } k++; /* Perform the task indicated by kase. */ switch (kase) { /* Deflate negligible s(p). */ case 1: { float f = e[p - 2]; e[p - 2] = 0.0f; for (j = p - 2; j >= k; j--) { float t = hypotf(s[j], f); float invt = 1.0f / t; float cs = s[j] * invt; float sn = f * invt; s[j] = t; if (j != k) { f = -sn * e[j - 1]; e[j - 1] = cs * e[j - 1]; } for (i = 0; i < n; i++) { t = cs * V[i][j] + sn * V[i][p - 1]; V[i][p - 1] = -sn * V[i][j] + cs * V[i][p - 1]; V[i][j] = t; } } break; } /* Split at negligible s(k). */ case 2: { float f = e[k - 1]; e[k - 1] = 0.0f; for (j = k; j < p; j++) { float t = hypotf(s[j], f); float invt = 1.0f / t; float cs = s[j] * invt; float sn = f * invt; s[j] = t; f = -sn * e[j]; e[j] = cs * e[j]; for (i = 0; i < m; i++) { t = cs * U[i][j] + sn * U[i][k - 1]; U[i][k - 1] = -sn * U[i][j] + cs * U[i][k - 1]; U[i][j] = t; } } break; } /* Perform one qr step. */ case 3: { /* Calculate the shift. */ float scale = max_ff( max_ff(max_ff(max_ff(fabsf(s[p - 1]), fabsf(s[p - 2])), fabsf(e[p - 2])), fabsf(s[k])), fabsf(e[k])); float invscale = 1.0f / scale; float sp = s[p - 1] * invscale; float spm1 = s[p - 2] * invscale; float epm1 = e[p - 2] * invscale; float sk = s[k] * invscale; float ek = e[k] * invscale; float b = ((spm1 + sp) * (spm1 - sp) + epm1 * epm1) * 0.5f; float c = (sp * epm1) * (sp * epm1); float shift = 0.0f; float f, g; if ((b != 0.0f) || (c != 0.0f)) { shift = sqrtf(b * b + c); if (b < 0.0f) { shift = -shift; } shift = c / (b + shift); } f = (sk + sp) * (sk - sp) + shift; g = sk * ek; /* Chase zeros. */ for (j = k; j < p - 1; j++) { float t = hypotf(f, g); /* division by zero checks added to avoid NaN (brecht) */ float cs = (t == 0.0f) ? 0.0f : f / t; float sn = (t == 0.0f) ? 0.0f : g / t; if (j != k) { e[j - 1] = t; } f = cs * s[j] + sn * e[j]; e[j] = cs * e[j] - sn * s[j]; g = sn * s[j + 1]; s[j + 1] = cs * s[j + 1]; for (i = 0; i < n; i++) { t = cs * V[i][j] + sn * V[i][j + 1]; V[i][j + 1] = -sn * V[i][j] + cs * V[i][j + 1]; V[i][j] = t; } t = hypotf(f, g); /* division by zero checks added to avoid NaN (brecht) */ cs = (t == 0.0f) ? 0.0f : f / t; sn = (t == 0.0f) ? 0.0f : g / t; s[j] = t; f = cs * e[j] + sn * s[j + 1]; s[j + 1] = -sn * e[j] + cs * s[j + 1]; g = sn * e[j + 1]; e[j + 1] = cs * e[j + 1]; if (j < m - 1) { for (i = 0; i < m; i++) { t = cs * U[i][j] + sn * U[i][j + 1]; U[i][j + 1] = -sn * U[i][j] + cs * U[i][j + 1]; U[i][j] = t; } } } e[p - 2] = f; iter = iter + 1; break; } /* Convergence. */ case 4: { /* Make the singular values positive. */ if (s[k] <= 0.0f) { s[k] = (s[k] < 0.0f ? -s[k] : 0.0f); for (i = 0; i <= pp; i++) { V[i][k] = -V[i][k]; } } /* Order the singular values. */ while (k < pp) { float t; if (s[k] >= s[k + 1]) { break; } t = s[k]; s[k] = s[k + 1]; s[k + 1] = t; if (k < n - 1) { for (i = 0; i < n; i++) { t = V[i][k + 1]; V[i][k + 1] = V[i][k]; V[i][k] = t; } } if (k < m - 1) { for (i = 0; i < m; i++) { t = U[i][k + 1]; U[i][k + 1] = U[i][k]; U[i][k] = t; } } k++; } iter = 0; p--; break; } } } } void pseudoinverse_m4_m4(float Ainv[4][4], const float A_[4][4], float epsilon) { /* compute Moore-Penrose pseudo inverse of matrix, singular values * below epsilon are ignored for stability (truncated SVD) */ float A[4][4], V[4][4], W[4], Wm[4][4], U[4][4]; int i; transpose_m4_m4(A, A_); svd_m4(V, W, U, A); transpose_m4(U); transpose_m4(V); zero_m4(Wm); for (i = 0; i < 4; i++) { Wm[i][i] = (W[i] < epsilon) ? 0.0f : 1.0f / W[i]; } transpose_m4(V); mul_m4_series(Ainv, U, Wm, V); } void pseudoinverse_m3_m3(float Ainv[3][3], const float A[3][3], float epsilon) { /* try regular inverse when possible, otherwise fall back to slow svd */ if (!invert_m3_m3(Ainv, A)) { float tmp[4][4], tmpinv[4][4]; copy_m4_m3(tmp, A); pseudoinverse_m4_m4(tmpinv, tmp, epsilon); copy_m3_m4(Ainv, tmpinv); } } bool has_zero_axis_m4(const float matrix[4][4]) { return len_squared_v3(matrix[0]) < FLT_EPSILON || len_squared_v3(matrix[1]) < FLT_EPSILON || len_squared_v3(matrix[2]) < FLT_EPSILON; } void invert_m4_m4_safe(float Ainv[4][4], const float A[4][4]) { if (!invert_m4_m4(Ainv, A)) { float Atemp[4][4]; copy_m4_m4(Atemp, A); /* Matrix is degenerate (e.g. 0 scale on some axis), ideally we should * never be in this situation, but try to invert it anyway with tweak. */ Atemp[0][0] += 1e-8f; Atemp[1][1] += 1e-8f; Atemp[2][2] += 1e-8f; if (!invert_m4_m4(Ainv, Atemp)) { unit_m4(Ainv); } } } /* -------------------------------------------------------------------- */ /** \name Invert (Safe Orthographic) * * Invert the matrix, filling in zeroed axes using the valid ones where possible. * * Unlike #invert_m4_m4_safe set degenerate axis unit length instead of adding a small value, * which has the results in: * * - Scaling by a large value on the resulting matrix. * - Changing axis which aren't degenerate. * * \note We could support passing in a length value if there is a good use-case * where we want to specify the length of the degenerate axes. * \{ */ void invert_m4_m4_safe_ortho(float Ainv[4][4], const float A[4][4]) { if (UNLIKELY(!invert_m4_m4(Ainv, A))) { float Atemp[4][4]; copy_m4_m4(Atemp, A); if (UNLIKELY(!(orthogonalize_m4_zero_axes(Atemp, 1.0f) && invert_m4_m4(Ainv, Atemp)))) { unit_m4(Ainv); } } } void invert_m3_m3_safe_ortho(float Ainv[3][3], const float A[3][3]) { if (UNLIKELY(!invert_m3_m3(Ainv, A))) { float Atemp[3][3]; copy_m3_m3(Atemp, A); if (UNLIKELY(!(orthogonalize_m3_zero_axes(Atemp, 1.0f) && invert_m3_m3(Ainv, Atemp)))) { unit_m3(Ainv); } } } /** \} */ void BLI_space_transform_from_matrices(SpaceTransform *data, const float local[4][4], const float target[4][4]) { float itarget[4][4]; invert_m4_m4(itarget, target); mul_m4_m4m4(data->local2target, itarget, local); invert_m4_m4(data->target2local, data->local2target); } void BLI_space_transform_global_from_matrices(SpaceTransform *data, const float local[4][4], const float target[4][4]) { float ilocal[4][4]; invert_m4_m4(ilocal, local); mul_m4_m4m4(data->local2target, target, ilocal); invert_m4_m4(data->target2local, data->local2target); } void BLI_space_transform_apply(const SpaceTransform *data, float co[3]) { mul_v3_m4v3(co, ((SpaceTransform *)data)->local2target, co); } void BLI_space_transform_invert(const SpaceTransform *data, float co[3]) { mul_v3_m4v3(co, ((SpaceTransform *)data)->target2local, co); } void BLI_space_transform_apply_normal(const SpaceTransform *data, float no[3]) { mul_mat3_m4_v3(((SpaceTransform *)data)->local2target, no); normalize_v3(no); } void BLI_space_transform_invert_normal(const SpaceTransform *data, float no[3]) { mul_mat3_m4_v3(((SpaceTransform *)data)->target2local, no); normalize_v3(no); }