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Giga Geometry Implementation

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josh
2024-04-08 13:27:56 -04:00
parent 0aff68b63e
commit d7b2157b0c
32 changed files with 1235 additions and 126 deletions
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13
include/J3ML/LinearAlgebra/Matrix4x4.h
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@@ -121,10 +121,19 @@ namespace J3ML::LinearAlgebra {
void SetRow(int row, const Vector4& rowVector);
void SetRow(int row, float m_r0, float m_r1, float m_r2, float m_r3);
void SetCol(int col, const Vector3& colVector, float m_c3);
void SetCol(int col, const Vector4& colVector);
void SetCol(int col, float m_c0, float m_c1, float m_c2, float m_c3);
void SetCol(int col, const float *data);
Vector4 GetRow(int index) const;
Vector4 GetColumn(int index) const;
Vector3 GetRow3(int index) const;
Vector3 GetColumn3(int index) const;
Vector4 Col(int i) const;
Vector4 Row(int i) const;
Vector4 Col3(int i) const;
Vector4 Row3(int i) const;
Vector3 GetScale() const
{
@@ -264,9 +273,13 @@ namespace J3ML::LinearAlgebra {
/// Returns true if this matrix is seen to contain a "projective" part,
/// i.e. whether the last row of this matrix differs from [0 0 0 1]
bool ContainsProjection(float epsilon = 1e-3f) const;
void InverseOrthonormal();
protected:
float elems[4][4];
Vector3 TransformDir(float tx, float ty, float tz) const;
};
}

3
include/J3ML/LinearAlgebra/Vector3.h
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@@ -11,6 +11,8 @@ namespace J3ML::LinearAlgebra {
// A 3D (x, y, z) ordered pair.
class Vector3 {
public:
float x = 0;
float y = 0;
float z = 0;
@@ -36,6 +38,7 @@ public:
Vector3();
// Constructs a new Vector3 with the value (X, Y, Z)
Vector3(float X, float Y, float Z);
Vector3(const Vector2& XY, float Z);
Vector3(const Vector3& rhs); // Copy Constructor
Vector3(Vector3&&) = default; // Move Constructor
/// Constructs this float3 from a C array, to the value (data[0], data[1], data[2]).

17
include/J3ML/LinearAlgebra/Vector4.h
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@@ -42,7 +42,18 @@ namespace J3ML::LinearAlgebra {
float &operator[](std::size_t index);
bool IsWithinMarginOfError(const Vector4& rhs, float margin=0.0001f) const;
bool IsNormalized(float epsilonSq = 1e-5f) const;
float LengthSqXYZ() const;
bool IsNormalized3(float epsilonSq = 1e-5f) const
{
return std::abs(LengthSqXYZ()-1.f) <= epsilonSq;
}
bool IsNormalized4(float epsilonSq = 1e-5f) const
{
return std::abs(LengthSquared()-1.f) <= epsilonSq;
}
bool IsNormalized(float epsilonSq = 1e-5f) const { return IsNormalized4(epsilonSq); }
bool IsZero(float epsilonSq = 1e-6f) const;
bool IsFinite() const;
bool IsPerpendicular(const Vector4& other, float epsilonSq=1e-5f) const
@@ -74,7 +85,9 @@ namespace J3ML::LinearAlgebra {
// the cross product only has the orthogonality property in 3 and 7 dimensions
// You should consider instead looking at Gram-Schmidt Orthogonalization
// to find orthonormal vectors.
Vector4 Cross(const Vector4& rhs) const;
Vector4 Cross3(const Vector3& rhs) const;
Vector4 Cross3(const Vector4& rhs) const;
Vector4 Cross(const Vector4& rhs) const { return Cross3(rhs); }
Vector4 Normalize() const;
Vector4 Lerp(const Vector4& goal, float alpha) const;