98 lines
2.3 KiB
C++
98 lines
2.3 KiB
C++
#ifndef NME_MATRIX_H
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#define NME_MATRIX_H
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#include <Geom.h>
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#include <string.h>
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namespace nme {
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class Matrix
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{
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public:
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Matrix(double inSX=1,double inSY=1, double inTX=0, double inTY=0) :
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m00(inSX), m01(0), mtx(inTX),
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m10(0), m11(inSY), mty(inTY)
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#ifdef NME_S3D
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, mtz(0)
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#endif
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{
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}
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Matrix Mult(const Matrix &inLHS) const;
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bool IsIdentity() const
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{ return m00==1.0 && m01==0.0 && mtx==0.0 &&
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m10==0.0 && m11==1.0 && mty==0.0; }
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bool IsIntTranslation() const
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{ return m00==1.0 && m01==0.0 && mtx==(int)mtx &&
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m10==0.0 && m11==1.0 && mty==(int)mty; }
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bool IsIntTranslation(const Matrix &inRHS,int &outTX,int &outTY) const
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{
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if (m00!=inRHS.m00 || m01!=inRHS.m01 || m10!=inRHS.m10 || m11!=inRHS.m11)
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return false;
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double dx = inRHS.mtx - mtx;
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int idx = (int)dx;
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if (dx!=idx)
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return false;
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double dy = inRHS.mty - mty;
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int idy = (int)dy;
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if (dy!=idy)
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return false;
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outTX = idx;
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outTY = idy;
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return true;
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}
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double GetScaleX() const;
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double GetScaleY() const;
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Matrix &Rotate(double inDeg);
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Matrix &Translate(double inTX, double inTY);
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Matrix Translated(double inTX, double inTY)
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{
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Matrix mat(*this);
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return mat.Translate(inTX,inTY);
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}
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Matrix &Scale(double inSX, double inSY);
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Matrix &operator *= (double inScale);
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Matrix &createGradientBox(double inWidth, double inHeight=0,
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double inRot=0, double inTX=0, double inTY=0 );
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inline bool operator==(const Matrix &inRHS) const
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{ return !memcmp(this,&inRHS,sizeof(*this)); }
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inline bool operator!=(const Matrix &inRHS) const
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{ return memcmp(this,&inRHS,sizeof(*this))!=0; }
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Matrix Invert2x2() const;
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void MatchTransform(double inX,double inY,double inTargetX,double inTargetY);
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UserPoint Apply(float inX,float inY) const;
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void ContravariantTrans(const Matrix &inMtx, Matrix &outTrans) const;
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Matrix Inverse() const;
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UserPoint ApplyInverse(const UserPoint &inPoint) const;
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void GLMult() const;
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Matrix &TranslateData(double inTX, double inTY);
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double m00, m01, mtx;
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double m10, m11, mty;
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#ifdef NME_S3D
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double mtz;
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#endif
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};
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typedef Matrix Matrix3D;
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} // end namespace nme
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#endif
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