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Some improvements to is_equal_approx, restored Quat operator. 

(cherry picked from commit dee98d3b6d)
This commit is contained in:
Juan Linietsky 2019-04-01 11:11:02 -03:00 committed by Hein-Pieter van Braam-Stewart
parent c76c33fb50
commit 0064d26517
4 changed files with 28 additions and 9 deletions
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26
core/math/basis.cpp
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@ -557,11 +557,23 @@ void Basis::set_euler_yxz(const Vector3 &p_euler) {
*this = ymat * xmat * zmat;
}
bool Basis::is_equal_approx(const Basis &a, const Basis &b) const {
bool Basis::is_equal_approx(const Basis &a, const Basis &b,real_t p_epsilon) const {
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 3; j++) {
if (!Math::is_equal_approx_ratio(a.elements[i][j], b.elements[i][j], UNIT_EPSILON))
if (!Math::is_equal_approx(a.elements[i][j], b.elements[i][j], p_epsilon))
return false;
}
}
return true;
}
bool Basis::is_equal_approx_ratio(const Basis &a, const Basis &b,real_t p_epsilon) const {
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 3; j++) {
if (!Math::is_equal_approx_ratio(a.elements[i][j], b.elements[i][j], p_epsilon))
return false;
}
}
@ -605,12 +617,14 @@ Basis::operator String() const {
Quat Basis::get_quat() const {
#ifdef MATH_CHECKS
if (!is_rotation()) {
ERR_EXPLAIN("Basis must be normalized in order to be casted to a Quaternion. Use get_rotation_quat() or call orthonormalized() instead.");
ERR_FAIL_V(Quat());
}
#endif
/* Allow getting a quaternion from an unnormalized transform */
Basis m = *this;
m.elements[0].normalize();
m.elements[1].normalize();
m.elements[2].normalize();
real_t trace = m.elements[0][0] + m.elements[1][1] + m.elements[2][2];
real_t temp[4];

3
core/math/basis.h
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@ -133,7 +133,8 @@ public:
return elements[0][2] * v[0] + elements[1][2] * v[1] + elements[2][2] * v[2];
}
bool is_equal_approx(const Basis &a, const Basis &b) const;
bool is_equal_approx(const Basis &a, const Basis &b, real_t p_epsilon=CMP_EPSILON) const;
bool is_equal_approx_ratio(const Basis &a, const Basis &b, real_t p_epsilon=UNIT_EPSILON) const;
bool operator==(const Basis &p_matrix) const;
bool operator!=(const Basis &p_matrix) const;

4
core/math/math_funcs.h
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@ -260,11 +260,11 @@ public:
static float random(float from, float to);
static real_t random(int from, int to) { return (real_t)random((real_t)from, (real_t)to); }
static _ALWAYS_INLINE_ bool is_equal_approx_ratio(real_t a, real_t b, real_t epsilon = CMP_EPSILON) {
static _ALWAYS_INLINE_ bool is_equal_approx_ratio(real_t a, real_t b, real_t epsilon = CMP_EPSILON, real_t min_epsilon = CMP_EPSILON) {
// this is an approximate way to check that numbers are close, as a ratio of their average size
// helps compare approximate numbers that may be very big or very small
real_t diff = abs(a - b);
if (diff == 0.0) {
if (diff == 0.0 || diff < min_epsilon) {
return true;
}
real_t avg_size = (abs(a) + abs(b)) / 2.0;

4
core/variant_call.cpp
View File

@ -775,6 +775,8 @@ struct _VariantCall {
VCALL_PTR0R(Basis, get_orthogonal_index);
VCALL_PTR0R(Basis, orthonormalized);
VCALL_PTR2R(Basis, slerp);
VCALL_PTR2R(Basis, is_equal_approx);
VCALL_PTR0R(Basis, get_rotation_quat);
VCALL_PTR0R(Transform, inverse);
VCALL_PTR0R(Transform, affine_inverse);
@ -1846,6 +1848,8 @@ void register_variant_methods() {
ADDFUNC1R(BASIS, VECTOR3, Basis, xform_inv, VECTOR3, "v", varray());
ADDFUNC0R(BASIS, INT, Basis, get_orthogonal_index, varray());
ADDFUNC2R(BASIS, BASIS, Basis, slerp, BASIS, "b", REAL, "t", varray());
ADDFUNC2R(BASIS, BOOL, Basis, is_equal_approx, BASIS, "b", REAL, "epsilon", varray(CMP_EPSILON));
ADDFUNC0R(BASIS, QUAT, Basis, get_rotation_quat, varray());
ADDFUNC0R(TRANSFORM, TRANSFORM, Transform, inverse, varray());
ADDFUNC0R(TRANSFORM, TRANSFORM, Transform, affine_inverse, varray());