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Добавление проверки, является ли матрица 2x2 или 3x3 матрицей поворота

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This commit is contained in:
Andrey Pokidov 2025-06-05 00:04:27 +07:00
parent 2a4d5522d3
commit b777560d93
6 changed files with 76 additions and 4 deletions
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40
basic-geometry/matrix3x3.h
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@ -272,6 +272,46 @@ inline int bgc_matrix3x3_is_singular_fp64(const BgcMatrix3x3FP64* matrix)
return bgc_is_zero_fp64(bgc_matrix3x3_get_determinant_fp64(matrix));
}
// ================ Is Rotation ================= //
inline int bgc_matrix3x3_is_rotation_fp32(const BgcMatrix3x3FP32* matrix)
{
const float product_r1c1 = matrix->r1c1 * matrix->r1c1 + matrix->r1c2 * matrix->r2c1 + matrix->r1c3 * matrix->r3c1;
const float product_r1c2 = matrix->r1c1 * matrix->r1c2 + matrix->r1c2 * matrix->r2c2 + matrix->r1c3 * matrix->r3c2;
const float product_r1c3 = matrix->r1c1 * matrix->r1c3 + matrix->r1c2 * matrix->r2c3 + matrix->r1c3 * matrix->r3c3;
const float product_r2c1 = matrix->r2c1 * matrix->r1c1 + matrix->r2c2 * matrix->r2c1 + matrix->r2c3 * matrix->r3c1;
const float product_r2c2 = matrix->r2c1 * matrix->r1c2 + matrix->r2c2 * matrix->r2c2 + matrix->r2c3 * matrix->r3c2;
const float product_r2c3 = matrix->r2c1 * matrix->r1c3 + matrix->r2c2 * matrix->r2c3 + matrix->r2c3 * matrix->r3c3;
const float product_r3c1 = matrix->r3c1 * matrix->r1c1 + matrix->r3c2 * matrix->r2c1 + matrix->r3c3 * matrix->r3c1;
const float product_r3c2 = matrix->r3c1 * matrix->r1c2 + matrix->r3c2 * matrix->r2c2 + matrix->r3c3 * matrix->r3c2;
const float product_r3c3 = matrix->r3c1 * matrix->r1c3 + matrix->r3c2 * matrix->r2c3 + matrix->r3c3 * matrix->r3c3;
return bgc_is_unit_fp32(product_r1c1) && bgc_is_zero_fp32(product_r1c2) && bgc_is_zero_fp32(product_r1c3)
&& bgc_is_zero_fp32(product_r2c1) && bgc_is_unit_fp32(product_r2c2) && bgc_is_zero_fp32(product_r2c3)
&& bgc_is_zero_fp32(product_r3c1) && bgc_is_zero_fp32(product_r3c2) && bgc_is_unit_fp32(product_r3c3);
}
inline int bgc_matrix3x3_is_rotation_fp64(const BgcMatrix3x3FP64* matrix)
{
const double product_r1c1 = matrix->r1c1 * matrix->r1c1 + matrix->r1c2 * matrix->r2c1 + matrix->r1c3 * matrix->r3c1;
const double product_r1c2 = matrix->r1c1 * matrix->r1c2 + matrix->r1c2 * matrix->r2c2 + matrix->r1c3 * matrix->r3c2;
const double product_r1c3 = matrix->r1c1 * matrix->r1c3 + matrix->r1c2 * matrix->r2c3 + matrix->r1c3 * matrix->r3c3;
const double product_r2c1 = matrix->r2c1 * matrix->r1c1 + matrix->r2c2 * matrix->r2c1 + matrix->r2c3 * matrix->r3c1;
const double product_r2c2 = matrix->r2c1 * matrix->r1c2 + matrix->r2c2 * matrix->r2c2 + matrix->r2c3 * matrix->r3c2;
const double product_r2c3 = matrix->r2c1 * matrix->r1c3 + matrix->r2c2 * matrix->r2c3 + matrix->r2c3 * matrix->r3c3;
const double product_r3c1 = matrix->r3c1 * matrix->r1c1 + matrix->r3c2 * matrix->r2c1 + matrix->r3c3 * matrix->r3c1;
const double product_r3c2 = matrix->r3c1 * matrix->r1c2 + matrix->r3c2 * matrix->r2c2 + matrix->r3c3 * matrix->r3c2;
const double product_r3c3 = matrix->r3c1 * matrix->r1c3 + matrix->r3c2 * matrix->r2c3 + matrix->r3c3 * matrix->r3c3;
return bgc_is_unit_fp64(product_r1c1) && bgc_is_zero_fp64(product_r1c2) && bgc_is_zero_fp64(product_r1c3)
&& bgc_is_zero_fp64(product_r2c1) && bgc_is_unit_fp64(product_r2c2) && bgc_is_zero_fp64(product_r2c3)
&& bgc_is_zero_fp64(product_r3c1) && bgc_is_zero_fp64(product_r3c2) && bgc_is_unit_fp64(product_r3c3);
}
// =================== Invert =================== //
int bgc_matrix3x3_invert_fp32(const BgcMatrix3x3FP32* matrix, BgcMatrix3x3FP32* inverted);