diff options
Diffstat (limited to 'source/blender/blenlib/intern/math_vector.c')
| -rw-r--r-- | source/blender/blenlib/intern/math_vector.c | 78 |
1 files changed, 72 insertions, 6 deletions
diff --git a/source/blender/blenlib/intern/math_vector.c b/source/blender/blenlib/intern/math_vector.c index 814180bba24..6da0e87355d 100644 --- a/source/blender/blenlib/intern/math_vector.c +++ b/source/blender/blenlib/intern/math_vector.c @@ -572,6 +572,27 @@ void project_v3_v3v3(float c[3], const float v1[3], const float v2[3]) c[2] = mul * v2[2]; } +/** + * In this case plane is a 3D vector only (no 4th component). + * + * Projecting will make \a c a copy of \a v orthogonal to \a v_plane. + * + * \note If \a v is exactly perpendicular to \a v_plane, \a c will just be a copy of \a v. + */ +void project_plane_v3_v3v3(float c[3], const float v[3], const float v_plane[3]) +{ + float delta[3]; + project_v3_v3v3(delta, v, v_plane); + sub_v3_v3v3(c, v, delta); +} + +void project_plane_v2_v2v2(float c[2], const float v[2], const float v_plane[2]) +{ + float delta[2]; + project_v2_v2v2(delta, v, v_plane); + sub_v2_v2v2(c, v, delta); +} + /* project a vector on a plane defined by normal and a plane point p */ void project_v3_plane(float v[3], const float n[3], const float p[3]) { @@ -855,7 +876,7 @@ float normalize_vn_vn(float *array_tar, const float *array_src, const int size) mul_vn_vn_fl(array_tar, array_src, size, 1.0f / d_sqrt); } else { - fill_vn_fl(array_tar, size, 0.0f); + copy_vn_fl(array_tar, size, 0.0f); d_sqrt = 0.0f; } return d_sqrt; @@ -876,6 +897,16 @@ void range_vn_i(int *array_tar, const int size, const int start) } } +void range_vn_u(unsigned int *array_tar, const int size, const unsigned int start) +{ + unsigned int *array_pt = array_tar + (size - 1); + unsigned int j = start + (unsigned int)(size - 1); + int i = size; + while (i--) { + *(array_pt--) = j--; + } +} + void range_vn_fl(float *array_tar, const int size, const float start, const float step) { float *array_pt = array_tar + (size - 1); @@ -1020,7 +1051,7 @@ void interp_vn_vn(float *array_tar, const float *array_src, const float t, const } } -void fill_vn_i(int *array_tar, const int size, const int val) +void copy_vn_i(int *array_tar, const int size, const int val) { int *tar = array_tar + (size - 1); int i = size; @@ -1029,7 +1060,7 @@ void fill_vn_i(int *array_tar, const int size, const int val) } } -void fill_vn_short(short *array_tar, const int size, const short val) +void copy_vn_short(short *array_tar, const int size, const short val) { short *tar = array_tar + (size - 1); int i = size; @@ -1038,7 +1069,7 @@ void fill_vn_short(short *array_tar, const int size, const short val) } } -void fill_vn_ushort(unsigned short *array_tar, const int size, const unsigned short val) +void copy_vn_ushort(unsigned short *array_tar, const int size, const unsigned short val) { unsigned short *tar = array_tar + (size - 1); int i = size; @@ -1047,7 +1078,7 @@ void fill_vn_ushort(unsigned short *array_tar, const int size, const unsigned sh } } -void fill_vn_uchar(unsigned char *array_tar, const int size, const unsigned char val) +void copy_vn_uchar(unsigned char *array_tar, const int size, const unsigned char val) { unsigned char *tar = array_tar + (size - 1); int i = size; @@ -1056,7 +1087,7 @@ void fill_vn_uchar(unsigned char *array_tar, const int size, const unsigned char } } -void fill_vn_fl(float *array_tar, const int size, const float val) +void copy_vn_fl(float *array_tar, const int size, const float val) { float *tar = array_tar + (size - 1); int i = size; @@ -1064,3 +1095,38 @@ void fill_vn_fl(float *array_tar, const int size, const float val) *(tar--) = val; } } + +/** \name Double precision versions 'db'. + * \{ */ + +void add_vn_vn_d(double *array_tar, const double *array_src, const int size) +{ + double *tar = array_tar + (size - 1); + const double *src = array_src + (size - 1); + int i = size; + while (i--) { + *(tar--) += *(src--); + } +} + +void add_vn_vnvn_d(double *array_tar, const double *array_src_a, const double *array_src_b, const int size) +{ + double *tar = array_tar + (size - 1); + const double *src_a = array_src_a + (size - 1); + const double *src_b = array_src_b + (size - 1); + int i = size; + while (i--) { + *(tar--) = *(src_a--) + *(src_b--); + } +} + +void mul_vn_db(double *array_tar, const int size, const double f) +{ + double *array_pt = array_tar + (size - 1); + int i = size; + while (i--) { + *(array_pt--) *= f; + } +} + +/** \} */ |