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LibGfx: Constexpr Matrices and Vectors

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Hendiadyoin1 2021-05-02 16:09:18 +02:00 • committed by Andreas Kling
parent 09f850728a
commit 1424c4651f
4 changed files with 61 additions and 61 deletions
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24
Userland/Libraries/LibGfx/Matrix4x4.h
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@ -16,8 +16,8 @@ namespace Gfx {
template<typename T>
class Matrix4x4 final : public Matrix<4, T> {
public:
Matrix4x4() = default;
Matrix4x4(T _11, T _12, T _13, T _14,
constexpr Matrix4x4() = default;
constexpr Matrix4x4(T _11, T _12, T _13, T _14,
T _21, T _22, T _23, T _24,
T _31, T _32, T _33, T _34,
T _41, T _42, T _43, T _44)
@ -30,10 +30,10 @@ public:
{
}
auto elements() const { return m_elements; }
auto elements() { return m_elements; }
constexpr auto elements() const { return m_elements; }
constexpr auto elements() { return m_elements; }
Matrix4x4 operator*(const Matrix4x4& other) const
constexpr Matrix4x4 operator*(const Matrix4x4& other) const
{
Matrix4x4 product;
for (int i = 0; i < 4; ++i) {
@ -47,7 +47,7 @@ public:
return product;
}
Vector4<T> operator*(const Vector4<T>& v) const
constexpr Vector4<T> operator*(const Vector4<T>& v) const
{
return Vector4<T>(
v.x() * m_elements[0][0] + v.y() * m_elements[1][0] + v.z() * m_elements[2][0] + v.w() * m_elements[3][0],
@ -55,8 +55,8 @@ public:
v.x() * m_elements[0][2] + v.y() * m_elements[1][2] + v.z() * m_elements[2][2] + v.w() * m_elements[3][2],
v.x() * m_elements[0][3] + v.y() * m_elements[1][3] + v.z() * m_elements[2][3] + v.w() * m_elements[3][3]);
}
Vector3<T> transform_point(const Vector3<T>& p) const
constexpr Vector3<T> transform_point(const Vector3<T>& p) const
{
return Vector3<T>(
p.x() * m_elements[0][0] + p.y() * m_elements[1][0] + p.z() * m_elements[2][0] + m_elements[3][0],
@ -64,7 +64,7 @@ public:
p.x() * m_elements[0][2] + p.y() * m_elements[1][2] + p.z() * m_elements[2][2] + m_elements[3][2]);
}
static Matrix4x4 identity()
constexpr static Matrix4x4 identity()
{
return Matrix4x4(
1, 0, 0, 0,
@ -73,7 +73,7 @@ public:
0, 0, 0, 1);
}
static Matrix4x4 translate(const Vector3<T>& p)
constexpr static Matrix4x4 translate(const Vector3<T>& p)
{
return Matrix4x4(
1, 0, 0, 0,
@ -82,7 +82,7 @@ public:
p.x(), p.y(), p.z(), 1);
}
static Matrix4x4 scale(const Vector3<T>& s)
constexpr static Matrix4x4 scale(const Vector3<T>& s)
{
return Matrix4x4(
s.x(), 0, 0, 0,
@ -91,7 +91,7 @@ public:
0, 0, 0, 1);
}
static Matrix4x4 rotate(const Vector3<T>& axis, T angle)
constexpr static Matrix4x4 rotate(const Vector3<T>& axis, T angle)
{
T c = cos(angle);
T s = sin(angle);