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Implement Mat4x4 member docs

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josh
2024-02-01 17:23:48 -05:00
parent 35fded8ec0
commit c858d3b889
2 changed files with 41 additions and 11 deletions
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31
include/J3ML/LinearAlgebra/Matrix4x4.h
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@@ -65,7 +65,14 @@ namespace LinearAlgebra {
/// Logically, the translation occurs after the rotation has been performed.
Matrix4x4(const Quaternion& orientation, const Vector3 &translation);
/// Returns the translation part.
/** The translation part is stored in the fourth column of this matrix.
This is equivalent to decomposing this matrix in the form M = T * M', i.e. this translation is applied last,
after applying rotation and scale. If this matrix represents a local->world space transformation for an object,
then this gives the world space position of the object.
@note This function assumes that this matrix does not contain projection (the fourth row of this matrix is [0 0 0 1]). */
Vector3 GetTranslatePart() const;
/// Returns the top-left 3x3 part of this matrix. This stores the rotation part of this matrix (if this matrix represents a rotation).
Matrix3x3 GetRotatePart() const;
void SetTranslatePart(float translateX, float translateY, float translateZ);
void SetTranslatePart(const Vector3& offset);
@@ -97,9 +104,22 @@ namespace LinearAlgebra {
Vector4 Diagonal() const;
Vector3 Diagonal3() const;
Vector4 WorldX() const;
Vector4 WorldY() const;
Vector4 WorldZ() const;
/// Returns the local +X axis in world space.
/// This is the same as transforming the vector (1,0,0) by this matrix.
Vector3 WorldX() const;
/// Returns the local +Y axis in world space.
/// This is the same as transforming the vector (0,1,0) by this matrix.
Vector3 WorldY() const;
/// Returns the local +Z axis in world space.
/// This is the same as transforming the vector (0,0,1) by this matrix.
Vector3 WorldZ() const;
/// Accesses this structure as a float array.
/// @return A pointer to the upper-left element. The data is contiguous in memory.
/// ptr[0] gives the element [0][0], ptr[1] is [0][1], ptr[2] is [0][2].
/// ptr[4] == [1][0], ptr[5] == [1][1], ..., and finally, ptr[15] == [3][3].
float *ptr() { return &elems[0][0]; }
const float *ptr() const { return &elems[0][0]; }
float Determinant3x3() const;
/// Computes the determinant of this matrix.
@@ -129,8 +149,6 @@ namespace LinearAlgebra {
static Matrix4x4 FromTranslation(const Vector3& rhs);
static Matrix4x4 D3DOrthoProjLH(float nearPlane, float farPlane, float hViewportSize, float vViewportSize);
static Matrix4x4 D3DOrthoProjRH(float nearPlane, float farPlane, float hViewportSize, float vViewportSize);
static Matrix4x4 D3DPerspProjLH(float nearPlane, float farPlane, float hViewportSize, float vViewportSize);
@@ -141,9 +159,6 @@ namespace LinearAlgebra {
static Matrix4x4 OpenGLPerspProjLH(float nearPlane, float farPlane, float hViewportSize, float vViewportSize);
static Matrix4x4 OpenGLPerspProjRH(float nearPlane, float farPlane, float hViewportSize, float vViewportSize);
Vector3 GetTranslationComponent() const;
Matrix3x3 GetRotationComponent() const;
Vector4 GetRow() const;
Vector4 GetColumn() const;