75 lines
1.5 KiB
C++
75 lines
1.5 KiB
C++
// Copyright (c) 2012-2021 Wojciech Figat. All rights reserved.
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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 "../Types/String.h"
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#include "VectorInt.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& v)
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: X((float)v.X)
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, Y((float)v.Y)
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{
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}
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Vector2::Vector2(const Vector3& v)
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: X(v.X)
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, Y(v.Y)
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{
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}
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Vector2::Vector2(const Vector4& v)
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: X(v.X)
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, Y(v.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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