зеркало из https://github.com/mozilla/pjs.git
226 строки
7.3 KiB
C++
226 строки
7.3 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
|
|
* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
* 1.1 (the "License"); you may not use this file except in compliance with
|
|
* the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is Mozilla Corporation code.
|
|
*
|
|
* The Initial Developer of the Original Code is Oracle Corporation.
|
|
* Portions created by the Initial Developer are Copyright (C) 2005
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
* Bas Schouten <bschouten@mozilla.com
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either the GNU General Public License Version 2 or later (the "GPL"), or
|
|
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
#ifndef GFX_3DMATRIX_H
|
|
#define GFX_3DMATRIX_H
|
|
|
|
#include <gfxTypes.h>
|
|
#include <gfxMatrix.h>
|
|
#include <math.h>
|
|
|
|
/**
|
|
* This class represents a 3D transformation. The matrix is laid
|
|
* out as follows:
|
|
*
|
|
* _11 _12 _13 _14
|
|
* _21 _22 _23 _24
|
|
* _31 _32 _33 _34
|
|
* _41 _42 _43 _44
|
|
*
|
|
* This matrix is treated as row-major. Assuming we consider our vectors row
|
|
* vectors, this matrix type will be identical in memory to the OpenGL and D3D
|
|
* matrices. OpenGL matrices are column-major, however OpenGL also treats
|
|
* vectors as column vectors, the double transposition makes everything work
|
|
* out nicely.
|
|
*/
|
|
class THEBES_API gfx3DMatrix
|
|
{
|
|
public:
|
|
/**
|
|
* Create matrix.
|
|
*/
|
|
inline gfx3DMatrix(void);
|
|
|
|
/**
|
|
* Matrix multiplication.
|
|
*/
|
|
inline gfx3DMatrix operator*(const gfx3DMatrix &aMatrix);
|
|
|
|
/**
|
|
* Return true if this matrix and |aMatrix| are the same matrix.
|
|
*/
|
|
inline bool operator==(const gfx3DMatrix& aMatrix) const;
|
|
|
|
/**
|
|
* Create a 3D matrix from a gfxMatrix 2D affine transformation.
|
|
*
|
|
* \param aMatrix gfxMatrix 2D affine transformation.
|
|
*/
|
|
static inline gfx3DMatrix From2D(const gfxMatrix &aMatrix);
|
|
|
|
/**
|
|
* Returns true if the matrix is isomorphic to a 2D affine transformation
|
|
* (i.e. as obtained by From2D). If it is, optionally returns the 2D
|
|
* matrix in aMatrix.
|
|
*/
|
|
PRBool Is2D(gfxMatrix* aMatrix = nsnull) const;
|
|
|
|
/**
|
|
* Returns true if the matrix is the identity matrix. The most important
|
|
* property we require is that gfx3DMatrix().IsIdentity() returns true.
|
|
*/
|
|
inline PRBool IsIdentity() const;
|
|
|
|
/**
|
|
* Create a translation matrix.
|
|
*
|
|
* \param aX Translation on X-axis.
|
|
* \param aY Translation on Y-axis.
|
|
* \param aZ Translation on Z-axis.
|
|
*/
|
|
static inline gfx3DMatrix Translation(float aX, float aY, float aZ);
|
|
|
|
/**
|
|
* Create a scale matrix. Scales uniformly along all axes.
|
|
*
|
|
* \param aScale Scale factor
|
|
*/
|
|
static inline gfx3DMatrix Scale(float aFactor);
|
|
|
|
/**
|
|
* Create a scale matrix.
|
|
*/
|
|
static inline gfx3DMatrix Scale(float aX, float aY, float aZ);
|
|
|
|
/** Matrix elements */
|
|
float _11, _12, _13, _14;
|
|
float _21, _22, _23, _24;
|
|
float _31, _32, _33, _34;
|
|
float _41, _42, _43, _44;
|
|
};
|
|
|
|
inline
|
|
gfx3DMatrix::gfx3DMatrix(void)
|
|
{
|
|
_11 = _22 = _33 = _44 = 1.0f;
|
|
_12 = _13 = _14 = 0.0f;
|
|
_21 = _23 = _24 = 0.0f;
|
|
_31 = _32 = _34 = 0.0f;
|
|
_41 = _42 = _43 = 0.0f;
|
|
}
|
|
|
|
inline gfx3DMatrix
|
|
gfx3DMatrix::operator*(const gfx3DMatrix &aMatrix)
|
|
{
|
|
gfx3DMatrix matrix;
|
|
|
|
matrix._11 = _11 * aMatrix._11 + _12 * aMatrix._21 + _13 * aMatrix._31 + _14 * aMatrix._41;
|
|
matrix._21 = _21 * aMatrix._11 + _22 * aMatrix._21 + _23 * aMatrix._31 + _24 * aMatrix._41;
|
|
matrix._31 = _31 * aMatrix._11 + _32 * aMatrix._21 + _33 * aMatrix._31 + _34 * aMatrix._41;
|
|
matrix._41 = _41 * aMatrix._11 + _42 * aMatrix._21 + _43 * aMatrix._31 + _44 * aMatrix._41;
|
|
matrix._12 = _11 * aMatrix._12 + _12 * aMatrix._22 + _13 * aMatrix._32 + _14 * aMatrix._42;
|
|
matrix._22 = _21 * aMatrix._12 + _22 * aMatrix._22 + _23 * aMatrix._32 + _24 * aMatrix._42;
|
|
matrix._32 = _31 * aMatrix._12 + _32 * aMatrix._22 + _33 * aMatrix._32 + _34 * aMatrix._42;
|
|
matrix._42 = _41 * aMatrix._12 + _42 * aMatrix._22 + _43 * aMatrix._32 + _44 * aMatrix._42;
|
|
matrix._13 = _11 * aMatrix._13 + _12 * aMatrix._23 + _13 * aMatrix._33 + _14 * aMatrix._43;
|
|
matrix._23 = _21 * aMatrix._13 + _22 * aMatrix._23 + _23 * aMatrix._33 + _24 * aMatrix._43;
|
|
matrix._33 = _31 * aMatrix._13 + _32 * aMatrix._23 + _33 * aMatrix._33 + _34 * aMatrix._43;
|
|
matrix._43 = _41 * aMatrix._13 + _42 * aMatrix._23 + _43 * aMatrix._33 + _44 * aMatrix._43;
|
|
matrix._14 = _11 * aMatrix._14 + _12 * aMatrix._24 + _13 * aMatrix._34 + _14 * aMatrix._44;
|
|
matrix._24 = _21 * aMatrix._14 + _22 * aMatrix._24 + _23 * aMatrix._34 + _24 * aMatrix._44;
|
|
matrix._34 = _31 * aMatrix._14 + _32 * aMatrix._24 + _33 * aMatrix._34 + _34 * aMatrix._44;
|
|
matrix._44 = _41 * aMatrix._14 + _42 * aMatrix._24 + _43 * aMatrix._34 + _44 * aMatrix._44;
|
|
|
|
return matrix;
|
|
}
|
|
|
|
inline bool
|
|
gfx3DMatrix::operator==(const gfx3DMatrix& o) const
|
|
{
|
|
// XXX would be nice to memcmp here, but that breaks IEEE 754 semantics
|
|
return _11 == o._11 && _12 == o._12 && _13 == o._13 && _14 == o._14 &&
|
|
_21 == o._21 && _22 == o._22 && _23 == o._23 && _24 == o._24 &&
|
|
_31 == o._31 && _32 == o._32 && _33 == o._33 && _34 == o._34 &&
|
|
_41 == o._41 && _42 == o._42 && _43 == o._43 && _44 == o._44;
|
|
}
|
|
|
|
inline gfx3DMatrix
|
|
gfx3DMatrix::From2D(const gfxMatrix &aMatrix)
|
|
{
|
|
gfx3DMatrix matrix;
|
|
matrix._11 = (float)aMatrix.xx;
|
|
matrix._12 = (float)aMatrix.yx;
|
|
matrix._21 = (float)aMatrix.xy;
|
|
matrix._22 = (float)aMatrix.yy;
|
|
matrix._41 = (float)aMatrix.x0;
|
|
matrix._42 = (float)aMatrix.y0;
|
|
return matrix;
|
|
}
|
|
|
|
inline PRBool
|
|
gfx3DMatrix::IsIdentity() const
|
|
{
|
|
return _11 == 1.0f && _12 == 0.0f && _13 == 0.0f && _14 == 0.0f &&
|
|
_21 == 0.0f && _22 == 1.0f && _23 == 0.0f && _24 == 0.0f &&
|
|
_31 == 0.0f && _32 == 0.0f && _33 == 1.0f && _34 == 0.0f &&
|
|
_41 == 0.0f && _42 == 0.0f && _43 == 0.0f && _44 == 1.0f;
|
|
}
|
|
|
|
inline gfx3DMatrix
|
|
gfx3DMatrix::Translation(float aX, float aY, float aZ)
|
|
{
|
|
gfx3DMatrix matrix;
|
|
|
|
matrix._41 = aX;
|
|
matrix._42 = aY;
|
|
matrix._43 = aZ;
|
|
return matrix;
|
|
}
|
|
|
|
inline gfx3DMatrix
|
|
gfx3DMatrix::Scale(float aFactor)
|
|
{
|
|
gfx3DMatrix matrix;
|
|
|
|
matrix._11 = matrix._22 = matrix._33 = aFactor;
|
|
return matrix;
|
|
}
|
|
|
|
inline gfx3DMatrix
|
|
gfx3DMatrix::Scale(float aX, float aY, float aZ)
|
|
{
|
|
gfx3DMatrix matrix;
|
|
|
|
matrix._11 = aX;
|
|
matrix._22 = aY;
|
|
matrix._33 = aZ;
|
|
|
|
return matrix;
|
|
}
|
|
|
|
#endif /* GFX_3DMATRIX_H */
|