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LibGfx: Add some missing operators to Vector3 Vector4 and Matrix4x4

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This commit is contained in:
Stephan Unverwerth 2021-04-18 16:25:25 +02:00 committed by Andreas Kling
parent 0c5d61ae88
commit 09f850728a
Notes: sideshowbarker 2024-07-18 18:33:01 +09:00 
Author: https://github.com/sunverwerth
Commit: https://github.com/SerenityOS/serenity/commit/09f850728a7
Pull-request: https://github.com/SerenityOS/serenity/pull/6375
Reviewed-by: https://github.com/Hendiadyoin1
Reviewed-by: https://github.com/IdanHo
Reviewed-by: https://github.com/Quaker762
Reviewed-by: https://github.com/alimpfard
Reviewed-by: https://github.com/ccapitalK
Reviewed-by: https://github.com/gmta
3 changed files with 53 additions and 0 deletions
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19
Userland/Libraries/LibGfx/Matrix4x4.h
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@ -8,6 +8,7 @@
#include <LibGfx/Matrix.h>
#include <LibGfx/Vector3.h>
#include <LibGfx/Vector4.h>
#include <math.h>
namespace Gfx {
@ -46,6 +47,15 @@ public:
return product;
}
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],
v.x() * m_elements[0][1] + v.y() * m_elements[1][1] + v.z() * m_elements[2][1] + v.w() * m_elements[3][1],
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
{
return Vector3<T>(
@ -54,6 +64,15 @@ 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()
{
return Matrix4x4(
1, 0, 0, 0,
0, 1, 0, 0,
0, 0, 1, 0,
0, 0, 0, 1);
}
static Matrix4x4 translate(const Vector3<T>& p)
{
return Matrix4x4(

16
Userland/Libraries/LibGfx/Vector3.h
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@ -28,6 +28,22 @@ public:
void set_y(T value) { m_y = value; }
void set_z(T value) { m_z = value; }
Vector3& operator+=(const Vector3& other)
{
m_x += other.m_x;
m_y += other.m_y;
m_z += other.m_z;
return *this;
}
Vector3& operator-=(const Vector3& other)
{
m_x -= other.m_x;
m_y -= other.m_y;
m_z -= other.m_z;
return *this;
}
Vector3 operator+(const Vector3& other) const
{
return Vector3(m_x + other.m_x, m_y + other.m_y, m_z + other.m_z);

18
Userland/Libraries/LibGfx/Vector4.h
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@ -31,6 +31,24 @@ public:
void set_z(T value) { m_z = value; }
void set_w(T value) { m_w = value; }
Vector4& operator+=(const Vector4& other)
{
m_x += other.m_x;
m_y += other.m_y;
m_z += other.m_z;
m_w += other.m_w;
return *this;
}
Vector4& operator-=(const Vector4& other)
{
m_x -= other.m_x;
m_y -= other.m_y;
m_z -= other.m_z;
m_w -= other.m_w;
return *this;
}
Vector4 operator+(const Vector4& other) const
{
return Vector4(m_x + other.m_x, m_y + other.m_y, m_z + other.m_z, m_w + other.m_w);