Exemplo n.º 1
0
 public virtual void SetTransformStruct(NSAffineTransformStruct val)
 {
     _matrix = val;
     _isIdentity = false;
     _isFlipY = false;
     if (_matrix.m11 == 1.0 && _matrix.m12 == 0.0 && _matrix.m21 == 0.0)
     {
         if (_matrix.m22 == 1.0)
         {
             _isIdentity = true;
         }
         else if (_matrix.m22 == -1.0)
         {
             _isFlipY = true;
         }
     }
     //check();
 }
Exemplo n.º 2
0
 private static NSAffineTransformStruct matrix_multiply(NSAffineTransformStruct MA, NSAffineTransformStruct MB)
 {
     NSAffineTransformStruct MC;
     MC.m11 = MA.m11 * MB.m11 + MA.m12 * MB.m21;
     MC.m12 = MA.m11 * MB.m12 + MA.m12 * MB.m22;
     MC.m21 = MA.m21 * MB.m11 + MA.m22 * MB.m21;
     MC.m22 = MA.m21 * MB.m12 + MA.m22 * MB.m22;
     MC.tX = MA.tX * MB.m11 + MA.tY * MB.m21 + MB.tX;
     MC.tY = MA.tX * MB.m12 + MA.tY * MB.m22 + MB.tY;
     return MC;
 }
Exemplo n.º 3
0
        public virtual void ScaleBy(double scale)
        {
            NSAffineTransformStruct scam = IdentityTransform;

            scam.m11 = scale;
            scam.m22 = scale;
            _matrix = matrix_multiply(scam, _matrix);
            _isIdentity = false;
            _isFlipY = false;
            //check();
        }
Exemplo n.º 4
0
        public virtual void RotateByRadians(double angleRad)
        {
            if (angleRad != 0.0)
            {
                double sine;
                double cosine;
                NSAffineTransformStruct rotm;

                sine = Math.Sin(angleRad);
                cosine = Math.Cos(angleRad);
                rotm.m11 = cosine;
                rotm.m12 = sine;
                rotm.m21 = -sine;
                rotm.m22 = cosine;
                rotm.tX = rotm.tY = 0;
                _matrix = matrix_multiply(rotm, _matrix);
                _isIdentity = false;
                _isFlipY = false;
                //check();
            }
        }
Exemplo n.º 5
0
        public virtual void PrependTransform(ref NSAffineTransform aTransform)
        {
            //valid(aTransform);

            if (aTransform._isIdentity)
            {
                double newTX;

                newTX = aTransform._matrix.tX * _matrix.m11 + aTransform._matrix.tY * _matrix.m21 + _matrix.tX;
                _matrix.tY = aTransform._matrix.tX * _matrix.m12 + aTransform._matrix.tY * _matrix.m22 + _matrix.tY;
                _matrix.tX = newTX;
                //check();
                return;
            }

            if (aTransform._isFlipY)
            {
                double newTX;

                newTX = aTransform._matrix.tX * _matrix.m11 + aTransform._matrix.tY * _matrix.m21 + _matrix.tX;
                _matrix.tY = aTransform._matrix.tX * _matrix.m12 + aTransform._matrix.tY * _matrix.m22 + _matrix.tY;
                _matrix.tX = newTX;
                _matrix.m21 = -_matrix.m21;
                _matrix.m22 = -_matrix.m22;
                if (_isIdentity)
                {
                    _isFlipY = true;
                    _isIdentity = false;
                }
                else if (_isFlipY)
                {
                    _isFlipY = false;
                    _isIdentity = true;
                }
                //check();
                return;
            }

            if (_isIdentity)
            {
                _matrix.m11 = aTransform._matrix.m11;
                _matrix.m12 = aTransform._matrix.m12;
                _matrix.m21 = aTransform._matrix.m21;
                _matrix.m22 = aTransform._matrix.m22;
                _matrix.tX += aTransform._matrix.tX;
                _matrix.tY += aTransform._matrix.tY;
                _isIdentity = false;
                _isFlipY = aTransform._isFlipY;
                //check();
                return;
            }

            if (_isFlipY)
            {
                _matrix.m11 = aTransform._matrix.m11;
                _matrix.m12 = -aTransform._matrix.m12;
                _matrix.m21 = aTransform._matrix.m21;
                _matrix.m22 = -aTransform._matrix.m22;
                _matrix.tX += aTransform._matrix.tX;
                _matrix.tY -= aTransform._matrix.tY;
                _isIdentity = false;
                _isFlipY = false;
                //check();
                return;
            }

            _matrix = matrix_multiply(aTransform._matrix, _matrix);
            _isIdentity = false;
            _isFlipY = false;
            //check();
        }
Exemplo n.º 6
0
 public virtual id InitWithTransform(ref NSAffineTransform aTransform)
 {
     id self = this;
     _matrix = aTransform._matrix;
     _isIdentity = aTransform._isIdentity;
     _isFlipY = aTransform._isFlipY;
     return self;
 }
Exemplo n.º 7
0
        public override id Init()
        {
            id self = this;

            _matrix = IdentityTransform;
            _isIdentity = true;

            return self;
        }