118 lines
2.4 KiB
C++
118 lines
2.4 KiB
C++
// Copyright (c) 2012-2022 Wojciech Figat. All rights reserved.
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#include "Double2.h"
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#include "Double3.h"
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#include "Double4.h"
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#include "Vector2.h"
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#include "Vector3.h"
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#include "Vector4.h"
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#include "Color.h"
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#include "Int2.h"
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#include "Int3.h"
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#include "Int4.h"
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#include "../Types/String.h"
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static_assert(sizeof(Vector2) == 8, "Invalid Vector2 type size.");
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const Vector2 Vector2::Zero(0);
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const Vector2 Vector2::One(1);
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const Vector2 Vector2::UnitX(1, 0);
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const Vector2 Vector2::UnitY(0, 1);
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const Vector2 Vector2::Minimum(MIN_float);
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const Vector2 Vector2::Maximum(MAX_float);
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Vector2::Vector2(const Int2& xy)
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: X(static_cast<float>(xy.X))
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, Y(static_cast<float>(xy.Y))
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{
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}
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Vector2::Vector2(const Int3& xyz)
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: X(static_cast<float>(xyz.X))
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, Y(static_cast<float>(xyz.Y))
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{
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}
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Vector2::Vector2(const Int4& xyzw)
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: X(static_cast<float>(xyzw.X))
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, Y(static_cast<float>(xyzw.Y))
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{
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}
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Vector2::Vector2(const Vector3& xyz)
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: X(xyz.X)
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, Y(xyz.Y)
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{
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}
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Vector2::Vector2(const Vector4& xyzw)
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: X(xyzw.X)
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, Y(xyzw.Y)
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{
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}
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Vector2::Vector2(const Double2& xy)
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: X(static_cast<float>(xy.X))
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, Y(static_cast<float>(xy.Y))
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{
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}
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Vector2::Vector2(const Double3& xyz)
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: X(static_cast<float>(xyz.X))
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, Y(static_cast<float>(xyz.Y))
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{
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}
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Vector2::Vector2(const Double4& xyzw)
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: X(static_cast<float>(xyzw.X))
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, Y(static_cast<float>(xyzw.Y))
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{
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}
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Vector2::Vector2(const Color& color)
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: X(color.R)
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, Y(color.G)
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{
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}
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String Vector2::ToString() const
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{
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return String::Format(TEXT("{}"), *this);
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}
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Vector2 Vector2::Normalize(const Vector2& v)
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{
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Vector2 result = v;
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const float length = v.Length();
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if (!Math::IsZero(length))
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{
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const float inv = 1.0f / length;
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result.X *= inv;
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result.Y *= inv;
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}
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return result;
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}
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Int2 Vector2::CeilToInt(const Vector2& v)
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{
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return Int2(Math::CeilToInt(v.X), Math::CeilToInt(v.Y));
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}
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Int2 Vector2::FloorToInt(const Vector2& v)
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{
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return Int2(Math::FloorToInt(v.X), Math::FloorToInt(v.Y));
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}
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float Vector2::TriangleArea(const Vector2& v0, const Vector2& v1, const Vector2& v2)
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{
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return Math::Abs((v0.X * (v1.Y - v2.Y) + v1.X * (v2.Y - v0.Y) + v2.X * (v0.Y - v1.Y)) / 2);
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}
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float Vector2::Angle(const Vector2& from, const Vector2& to)
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{
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const float dot = Math::Clamp(Dot(Normalize(from), Normalize(to)), -1.0f, 1.0f);
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if (Math::Abs(dot) > (1.0f - ZeroTolerance))
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return dot > 0.0f ? 0.0f : PI;
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return Math::Acos(dot);
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}
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