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BLI_math: Cleanup: Use `mul_`/`madd_` functions. 

Better to avoid explicit vectors components direct manipulation when a
generic operation for whole vector exists, if nothing else it avoids
potential mistakes in indices.
This commit is contained in:
Bastien Montagne 2021-06-14 12:30:11 +02:00
parent b21db5e698
commit 748475b943
4 changed files with 34 additions and 49 deletions
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5
source/blender/blenlib/BLI_math_base.h
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@ -237,6 +237,7 @@ float ceil_power_of_10(float f);
#ifndef NDEBUG
/** \note 0.0001 is too small because normals may be converted from short's: see T34322. */
# define BLI_ASSERT_UNIT_EPSILON 0.0002f
# define BLI_ASSERT_UNIT_EPSILON_DB 0.0002
/**
* \note Checks are flipped so NAN doesn't assert.
* This is done because we're making sure the value was normalized and in the case we
@ -253,8 +254,8 @@ float ceil_power_of_10(float f);
# define BLI_ASSERT_UNIT_V3_DB(v) \
{ \
const double _test_unit = len_squared_v3_db(v); \
BLI_assert(!(fabs(_test_unit - 1.0) >= BLI_ASSERT_UNIT_EPSILON) || \
!(fabs(_test_unit) >= BLI_ASSERT_UNIT_EPSILON)); \
BLI_assert(!(fabs(_test_unit - 1.0) >= BLI_ASSERT_UNIT_EPSILON_DB) || \
!(fabs(_test_unit) >= BLI_ASSERT_UNIT_EPSILON_DB)); \
} \
(void)0

1
source/blender/blenlib/BLI_math_vector.h
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@ -163,6 +163,7 @@ MINLINE void madd_v3_v3fl(float r[3], const float a[3], float f);
MINLINE void madd_v3_v3v3(float r[3], const float a[3], const float b[3]);
MINLINE void madd_v2_v2v2fl(float r[2], const float a[2], const float b[2], float f);
MINLINE void madd_v3_v3v3fl(float r[3], const float a[3], const float b[3], float f);
MINLINE void madd_v3_v3v3db_db(double r[3], const double a[3], const double b[3], double f);
MINLINE void madd_v3_v3v3v3(float r[3], const float a[3], const float b[3], const float c[3]);
MINLINE void madd_v4_v4fl(float r[4], const float a[4], float f);
MINLINE void madd_v4_v4v4(float r[4], const float a[4], const float b[4]);

70
source/blender/blenlib/intern/math_vector.c
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@ -663,9 +663,7 @@ void project_v2_v2v2(float out[2], const float p[2], const float v_proj[2])
}
const float mul = dot_v2v2(p, v_proj) / dot_v2v2(v_proj, v_proj);
out[0] = mul * v_proj[0];
out[1] = mul * v_proj[1];
mul_v2_v2fl(out, v_proj, mul);
}
/**
@ -679,10 +677,7 @@ void project_v3_v3v3(float out[3], const float p[3], const float v_proj[3])
}
const float mul = dot_v3v3(p, v_proj) / dot_v3v3(v_proj, v_proj);
out[0] = mul * v_proj[0];
out[1] = mul * v_proj[1];
out[2] = mul * v_proj[2];
mul_v3_v3fl(out, v_proj, mul);
}
void project_v3_v3v3_db(double out[3], const double p[3], const double v_proj[3])
@ -693,10 +688,7 @@ void project_v3_v3v3_db(double out[3], const double p[3], const double v_proj[3]
}
const double mul = dot_v3v3_db(p, v_proj) / dot_v3v3_db(v_proj, v_proj);
out[0] = mul * v_proj[0];
out[1] = mul * v_proj[1];
out[2] = mul * v_proj[2];
mul_v3_v3db_db(out, v_proj, mul);
}
/**
@ -705,10 +697,9 @@ void project_v3_v3v3_db(double out[3], const double p[3], const double v_proj[3]
void project_v2_v2v2_normalized(float out[2], const float p[2], const float v_proj[2])
{
BLI_ASSERT_UNIT_V2(v_proj);
const float mul = dot_v2v2(p, v_proj);
out[0] = mul * v_proj[0];
out[1] = mul * v_proj[1];
const float mul = dot_v2v2(p, v_proj);
mul_v2_v2fl(out, v_proj, mul);
}
/**
@ -717,11 +708,9 @@ void project_v2_v2v2_normalized(float out[2], const float p[2], const float v_pr
void project_v3_v3v3_normalized(float out[3], const float p[3], const float v_proj[3])
{
BLI_ASSERT_UNIT_V3(v_proj);
const float mul = dot_v3v3(p, v_proj);
out[0] = mul * v_proj[0];
out[1] = mul * v_proj[1];
out[2] = mul * v_proj[2];
const float mul = dot_v3v3(p, v_proj);
mul_v3_v3fl(out, v_proj, mul);
}
/**
@ -740,37 +729,31 @@ void project_v3_v3v3_normalized(float out[3], const float p[3], const float v_pr
void project_plane_v3_v3v3(float out[3], const float p[3], const float v_plane[3])
{
const float mul = dot_v3v3(p, v_plane) / dot_v3v3(v_plane, v_plane);
out[0] = p[0] - (mul * v_plane[0]);
out[1] = p[1] - (mul * v_plane[1]);
out[2] = p[2] - (mul * v_plane[2]);
/* out[x] = p[x] - (mul * v_plane[x]) */
madd_v3_v3v3fl(out, p, v_plane, -mul);
}
void project_plane_v2_v2v2(float out[2], const float p[2], const float v_plane[2])
{
const float mul = dot_v2v2(p, v_plane) / dot_v2v2(v_plane, v_plane);
out[0] = p[0] - (mul * v_plane[0]);
out[1] = p[1] - (mul * v_plane[1]);
/* out[x] = p[x] - (mul * v_plane[x]) */
madd_v2_v2v2fl(out, p, v_plane, -mul);
}
void project_plane_normalized_v3_v3v3(float out[3], const float p[3], const float v_plane[3])
{
BLI_ASSERT_UNIT_V3(v_plane);
const float mul = dot_v3v3(p, v_plane);
out[0] = p[0] - (mul * v_plane[0]);
out[1] = p[1] - (mul * v_plane[1]);
out[2] = p[2] - (mul * v_plane[2]);
/* out[x] = p[x] - (mul * v_plane[x]) */
madd_v3_v3v3fl(out, p, v_plane, -mul);
}
void project_plane_normalized_v2_v2v2(float out[2], const float p[2], const float v_plane[2])
{
BLI_ASSERT_UNIT_V2(v_plane);
const float mul = dot_v2v2(p, v_plane);
out[0] = p[0] - (mul * v_plane[0]);
out[1] = p[1] - (mul * v_plane[1]);
/* out[x] = p[x] - (mul * v_plane[x]) */
madd_v2_v2v2fl(out, p, v_plane, -mul);
}
/* project a vector on a plane defined by normal and a plane point p */
@ -782,9 +765,8 @@ void project_v3_plane(float out[3], const float plane_no[3], const float plane_c
sub_v3_v3v3(vector, out, plane_co);
mul = dot_v3v3(vector, plane_no) / len_squared_v3(plane_no);
mul_v3_v3fl(vector, plane_no, mul);
sub_v3_v3(out, vector);
/* out[x] = out[x] - (mul * plane_no[x]) */
madd_v3_v3fl(out, plane_no, -mul);
}
/* Returns a vector bisecting the angle at b formed by a, b and c */
@ -817,24 +799,18 @@ void bisect_v3_v3v3v3(float r[3], const float a[3], const float b[3], const floa
*/
void reflect_v3_v3v3(float out[3], const float v[3], const float normal[3])
{
const float dot2 = 2.0f * dot_v3v3(v, normal);
BLI_ASSERT_UNIT_V3(normal);
out[0] = v[0] - (dot2 * normal[0]);
out[1] = v[1] - (dot2 * normal[1]);
out[2] = v[2] - (dot2 * normal[2]);
const float dot2 = 2.0f * dot_v3v3(v, normal);
/* out[x] = v[x] - (dot2 * normal[x]) */
madd_v3_v3v3fl(out, v, normal, -dot2);
}
void reflect_v3_v3v3_db(double out[3], const double v[3], const double normal[3])
{
BLI_ASSERT_UNIT_V3_DB(normal);
const double dot2 = 2.0 * dot_v3v3_db(v, normal);
/* BLI_ASSERT_UNIT_V3_DB(normal); this assert is not known? */
out[0] = v[0] - (dot2 * normal[0]);
out[1] = v[1] - (dot2 * normal[1]);
out[2] = v[2] - (dot2 * normal[2]);
/* out[x] = v[x] - (dot2 * normal[x]) */
madd_v3_v3v3db_db(out, v, normal, -dot2);
}
/**

7
source/blender/blenlib/intern/math_vector_inline.c
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@ -722,6 +722,13 @@ MINLINE void madd_v3_v3v3fl(float r[3], const float a[3], const float b[3], floa
r[2] = a[2] + b[2] * f;
}
MINLINE void madd_v3_v3v3db_db(double r[3], const double a[3], const double b[3], double f)
{
r[0] = a[0] + b[0] * f;
r[1] = a[1] + b[1] * f;
r[2] = a[2] + b[2] * f;
}
MINLINE void madd_v3_v3v3v3(float r[3], const float a[3], const float b[3], const float c[3])
{
r[0] = a[0] + b[0] * c[0];