85 lines
4.0 KiB
C
85 lines
4.0 KiB
C
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/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2017 - ROLI Ltd.
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JUCE is an open source library subject to commercial or open-source
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licensing.
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By using JUCE, you agree to the terms of both the JUCE 5 End-User License
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Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
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27th April 2017).
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End User License Agreement: www.juce.com/juce-5-licence
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Privacy Policy: www.juce.com/juce-5-privacy-policy
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Or: You may also use this code under the terms of the GPL v3 (see
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www.gnu.org/licenses).
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JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
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EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
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DISCLAIMED.
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==============================================================================
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*/
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namespace juce
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{
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//==============================================================================
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/**
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A three-coordinate vector.
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@tags{OpenGL}
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*/
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template <typename Type>
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class Vector3D
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{
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public:
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Vector3D() noexcept : x(), y(), z() {}
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Vector3D (Type xValue, Type yValue, Type zValue) noexcept : x (xValue), y (yValue), z (zValue) {}
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Vector3D (const Vector3D& other) noexcept : x (other.x), y (other.y), z (other.z) {}
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Vector3D& operator= (Vector3D other) noexcept { x = other.x; y = other.y; z = other.z; return *this; }
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/** Returns a vector that lies along the X axis. */
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static Vector3D xAxis() noexcept { return { (Type) 1, 0, 0 }; }
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/** Returns a vector that lies along the Y axis. */
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static Vector3D yAxis() noexcept { return { 0, (Type) 1, 0 }; }
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/** Returns a vector that lies along the Z axis. */
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static Vector3D zAxis() noexcept { return { 0, 0, (Type) 1 }; }
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Vector3D& operator+= (Vector3D other) noexcept { x += other.x; y += other.y; z += other.z; return *this; }
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Vector3D& operator-= (Vector3D other) noexcept { x -= other.x; y -= other.y; z -= other.z; return *this; }
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Vector3D& operator*= (Type scaleFactor) noexcept { x *= scaleFactor; y *= scaleFactor; z *= scaleFactor; return *this; }
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Vector3D& operator/= (Type scaleFactor) noexcept { x /= scaleFactor; y /= scaleFactor; z /= scaleFactor; return *this; }
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Vector3D operator+ (Vector3D other) const noexcept { return { x + other.x, y + other.y, z + other.z }; }
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Vector3D operator- (Vector3D other) const noexcept { return { x - other.x, y - other.y, z - other.z }; }
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Vector3D operator* (Type scaleFactor) const noexcept { return { x * scaleFactor, y * scaleFactor, z * scaleFactor }; }
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Vector3D operator/ (Type scaleFactor) const noexcept { return { x / scaleFactor, y / scaleFactor, z / scaleFactor }; }
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Vector3D operator-() const noexcept { return { -x, -y, -z }; }
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/** Returns the dot-product of these two vectors. */
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Type operator* (Vector3D other) const noexcept { return x * other.x + y * other.y + z * other.z; }
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/** Returns the cross-product of these two vectors. */
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Vector3D operator^ (Vector3D other) const noexcept { return { y * other.z - z * other.y, z * other.x - x * other.z, x * other.y - y * other.x }; }
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Type length() const noexcept { return std::sqrt (lengthSquared()); }
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Type lengthSquared() const noexcept { return x * x + y * y + z * z; }
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Vector3D normalised() const noexcept { return *this / length(); }
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/** Returns true if the vector is practically equal to the origin. */
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bool lengthIsBelowEpsilon() const noexcept
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{
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auto epsilon = std::numeric_limits<Type>::epsilon();
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return ! (x < -epsilon || x > epsilon || y < -epsilon || y > epsilon || z < -epsilon || z > epsilon);
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}
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Type x, y, z;
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};
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} // namespace juce
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