forked from bartvdbraak/blender
BLI_assert() when math functions that require are normalize vector are called without one.
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@ -208,6 +208,13 @@ float angle_signed_v2v2(const float v1[2], const float v2[2])
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float angle_normalized_v3v3(const float v1[3], const float v2[3])
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{
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/* double check they are normalized */
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#ifdef DEBUG
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float test;
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BLI_assert(fabsf((test = len_squared_v3(v1)) - 1.0f) < 0.0001f || fabsf(test) < 0.0001f);
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BLI_assert(fabsf((test = len_squared_v3(v2)) - 1.0f) < 0.0001f || fabsf(test) < 0.0001f);
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#endif
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/* this is the same as acos(dot_v3v3(v1, v2)), but more accurate */
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if (dot_v3v3(v1, v2) < 0.0f) {
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float vec[3];
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@ -224,6 +231,13 @@ float angle_normalized_v3v3(const float v1[3], const float v2[3])
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float angle_normalized_v2v2(const float v1[2], const float v2[2])
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{
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/* double check they are normalized */
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#ifdef DEBUG
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float test;
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BLI_assert(fabsf((test = len_squared_v2(v1)) - 1.0f) < 0.0001f || fabsf(test) < 0.0001f);
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BLI_assert(fabsf((test = len_squared_v2(v2)) - 1.0f) < 0.0001f || fabsf(test) < 0.0001f);
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#endif
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/* this is the same as acos(dot_v3v3(v1, v2)), but more accurate */
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if (dot_v2v2(v1, v2) < 0.0f) {
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float vec[2];
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@ -408,6 +422,12 @@ void rotate_normalized_v3_v3v3fl(float r[3], const float p[3], const float axis[
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const float costheta = cos(angle);
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const float sintheta = sin(angle);
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/* double check they are normalized */
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#ifdef DEBUG
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float test;
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BLI_assert(fabsf((test = len_squared_v3(axis)) - 1.0f) < 0.0001f || fabsf(test) < 0.0001f);
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#endif
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r[0] = ((costheta + (1 - costheta) * axis[0] * axis[0]) * p[0]) +
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(((1 - costheta) * axis[0] * axis[1] - axis[2] * sintheta) * p[1]) +
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(((1 - costheta) * axis[0] * axis[2] + axis[1] * sintheta) * p[2]);
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