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Expose determinant in Transform2D, rename internal method

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This commit is contained in:
Aaron Franke
2023-04-21 01:21:59 -05:00
parent 24cb43a874
commit 290b09b36c
5 changed files with 16 additions and 8 deletions
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10
core/math/transform_2d.cpp
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@@ -46,7 +46,7 @@ Transform2D Transform2D::inverse() const {
}
void Transform2D::affine_invert() {
real_t det = basis_determinant();
real_t det = determinant();
#ifdef MATH_CHECKS
ERR_FAIL_COND(det == 0);
#endif
@@ -70,12 +70,12 @@ void Transform2D::rotate(const real_t p_angle) {
}
real_t Transform2D::get_skew() const {
real_t det = basis_determinant();
real_t det = determinant();
return Math::acos(columns[0].normalized().dot(SIGN(det) * columns[1].normalized())) - (real_t)Math_PI * 0.5f;
}
void Transform2D::set_skew(const real_t p_angle) {
real_t det = basis_determinant();
real_t det = determinant();
columns[1] = SIGN(det) * columns[0].rotated(((real_t)Math_PI * 0.5f + p_angle)).normalized() * columns[1].length();
}
@@ -113,7 +113,7 @@ Transform2D::Transform2D(const real_t p_rot, const Size2 &p_scale, const real_t
}
Size2 Transform2D::get_scale() const {
real_t det_sign = SIGN(basis_determinant());
real_t det_sign = SIGN(determinant());
return Size2(columns[0].length(), det_sign * columns[1].length());
}
@@ -259,7 +259,7 @@ Transform2D Transform2D::rotated_local(const real_t p_angle) const {
return (*this) * Transform2D(p_angle, Vector2()); // Could be optimized, because origin transform can be skipped.
}
real_t Transform2D::basis_determinant() const {
real_t Transform2D::determinant() const {
return columns[0].x * columns[1].y - columns[0].y * columns[1].x;
}