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//
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// KRMat4.h
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// Kraken
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//
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// Copyright 2017 Kearwood Gilbert. All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other materials
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// provided with the distribution.
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//
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// THIS SOFTWARE IS PROVIDED BY KEARWOOD GILBERT ''AS IS'' AND ANY EXPRESS OR IMPLIED
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// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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// FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL KEARWOOD GILBERT OR
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// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// The views and conclusions contained in the software and documentation are those of the
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// authors and should not be interpreted as representing official policies, either expressed
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// or implied, of Kearwood Gilbert.
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//
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#include "Vector3.h"
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#include "Vector4.h"
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#ifndef KRAKEN_MATRIX4_H
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#define KRAKEN_MATRIX4_H
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namespace kraken {
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typedef enum {
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X_AXIS,
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Y_AXIS,
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Z_AXIS
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} AXIS;
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class KRQuaternion;
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class KRMat4 {
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public:
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float c[16]; // Matrix components, in column-major order
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// Default constructor - Creates an identity matrix
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KRMat4();
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KRMat4(float *pMat);
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KRMat4(const Vector3 &axis_x, const Vector3 &axis_y, const Vector3 &axis_z, const Vector3 &trans);
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// Destructor
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~KRMat4();
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// Copy constructor
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KRMat4(const KRMat4 &m);
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// Overload assignment operator
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KRMat4& operator=(const KRMat4 &m);
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// Overload comparison operator
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bool operator==(const KRMat4 &m) const;
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// Overload compound multiply operator
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KRMat4& operator*=(const KRMat4 &m);
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float& operator[](unsigned i);
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float operator[](unsigned i) const;
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// Overload multiply operator
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//KRMat4& operator*(const KRMat4 &m);
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KRMat4 operator*(const KRMat4 &m) const;
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float *getPointer();
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void perspective(float fov, float aspect, float nearz, float farz);
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void ortho(float left, float right, float top, float bottom, float nearz, float farz);
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void translate(float x, float y, float z);
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void translate(const Vector3 &v);
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void scale(float x, float y, float z);
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void scale(const Vector3 &v);
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void scale(float s);
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void rotate(float angle, AXIS axis);
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void rotate(const KRQuaternion &q);
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void bias();
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bool invert();
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void transpose();
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static Vector3 DotNoTranslate(const KRMat4 &m, const Vector3 &v); // Dot product without including translation; useful for transforming normals and tangents
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static KRMat4 Invert(const KRMat4 &m);
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static KRMat4 Transpose(const KRMat4 &m);
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static Vector3 Dot(const KRMat4 &m, const Vector3 &v);
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static Vector4 Dot4(const KRMat4 &m, const Vector4 &v);
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static float DotW(const KRMat4 &m, const Vector3 &v);
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static Vector3 DotWDiv(const KRMat4 &m, const Vector3 &v);
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static KRMat4 LookAt(const Vector3 &cameraPos, const Vector3 &lookAtPos, const Vector3 &upDirection);
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static KRMat4 Translation(const Vector3 &v);
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static KRMat4 Rotation(const Vector3 &v);
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static KRMat4 Scaling(const Vector3 &v);
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};
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} // namespace kraken
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#endif // KRAKEN_MATRIX4_H
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