namespace dragonBones
{
Matrix __MatrixMake(float a, float b, float c, float d, float tx, float ty)
{
Matrix t;
t.a = a; t.b = b;
t.c = c; t.d = d;
t.tx = tx; t.ty = ty;
return t;
}
Point __PointApplyMatrix(const Point& point, const Matrix& t)
{
Point p;
p.x = (float)((double)t.a * point.x + (double)t.c * point.y + t.tx);
p.y = (float)((double)t.b * point.x + (double)t.d * point.y + t.ty);
return p;
}
Matrix MatrixMakeIdentity()
{
return __MatrixMake(1.0, 0.0, 0.0, 1.0, 0.0, 0.0);
}
extern const Matrix MatrixIdentity = MatrixMakeIdentity();
Matrix MatrixTranslate(const Matrix& t, float tx, float ty)
{
return __MatrixMake(t.a, t.b, t.c, t.d, t.tx + t.a * tx + t.c * ty, t.ty + t.b * tx + t.d * ty);
}
Matrix MatrixScale(const Matrix& t, float sx, float sy)
{
return __MatrixMake(t.a * sx, t.b * sx, t.c * sy, t.d * sy, t.tx, t.ty);
}
Matrix MatrixRotate(const Matrix& t, float anAngle)
{
float fSin = sin(anAngle);
float fCos = cos(anAngle);
return __MatrixMake(t.a * fCos + t.c * fSin,
t.b * fCos + t.d * fSin,
t.c * fCos - t.a * fSin,
t.d * fCos - t.b * fSin,
t.tx, t.ty);
}
Matrix MatrixConcat(const Matrix& t1, const Matrix& t2)
{
return __MatrixMake(t1.a * t2.a + t1.b * t2.c, t1.a * t2.b + t1.b * t2.d, //a, b
t1.c * t2.a + t1.d * t2.c, t1.c * t2.b + t1.d * t2.d, //c, d
t1.tx * t2.a + t1.ty * t2.c + t2.tx, //tx
t1.tx * t2.b + t1.ty * t2.d + t2.ty); //ty
}
bool MatrixEqualToTransform(const Matrix& t1, const Matrix& t2)
{
return (t1.a == t2.a && t1.b == t2.b && t1.c == t2.c && t1.d == t2.d && t1.tx == t2.tx && t1.ty == t2.ty);
}
Matrix MatrixInvert(const Matrix& t)
{
float determinant = 1 / (t.a * t.d - t.b * t.c);
return __MatrixMake(determinant * t.d, -determinant * t.b, -determinant * t.c, determinant * t.a,
determinant * (t.c * t.ty - t.d * t.tx), determinant * (t.b * t.tx - t.a * t.ty));
}
};
namespace dragonBones
{
Matrix __MatrixMake(float a, float b, float c, float d, float tx, float ty)
{
Matrix t;
t.a = a; t.b = b; t.c = c; t.d = d; t.tx = tx; t.ty = ty;
return t;
}
Point __PointApplyMatrix(const Point& point, const Matrix& t)
{
Point p;
p.x = (float)((double)t.a * point.x + (double)t.c * point.y + t.tx);
p.y = (float)((double)t.b * point.x + (double)t.d * point.y + t.ty);
return p;
}
Matrix MatrixMakeIdentity()
{
return __MatrixMake(1.0, 0.0, 0.0, 1.0, 0.0, 0.0);
}
extern const Matrix MatrixIdentity = MatrixMakeIdentity();
//
//CCRect CCRectApplyMatrix(const CCRect& rect, const Matrix& anMatrix)
//{
// float top = rect.getMinY();
// float left = rect.getMinX();
// float right = rect.getMaxX();
// float bottom = rect.getMaxY();
//
// Point topLeft = PointApplyMatrix(PointMake(left, top), anMatrix);
// Point topRight = PointApplyMatrix(PointMake(right, top), anMatrix);
// Point bottomLeft = PointApplyMatrix(PointMake(left, bottom), anMatrix);
// Point bottomRight = PointApplyMatrix(PointMake(right, bottom), anMatrix);
//
// float minX = min(min(topLeft.x, topRight.x), min(bottomLeft.x, bottomRight.x));
// float maxX = max(max(topLeft.x, topRight.x), max(bottomLeft.x, bottomRight.x));
// float minY = min(min(topLeft.y, topRight.y), min(bottomLeft.y, bottomRight.y));
// float maxY = max(max(topLeft.y, topRight.y), max(bottomLeft.y, bottomRight.y));
//
// return CCRectMake(minX, minY, (maxX - minX), (maxY - minY));
//}
Matrix MatrixTranslate(const Matrix& t, float tx, float ty)
{
return __MatrixMake(t.a, t.b, t.c, t.d, t.tx + t.a * tx + t.c * ty, t.ty + t.b * tx + t.d * ty);
}
Matrix MatrixScale(const Matrix& t, float sx, float sy)
{
return __MatrixMake(t.a * sx, t.b * sx, t.c * sy, t.d * sy, t.tx, t.ty);
}
Matrix MatrixRotate(const Matrix& t, float anAngle)
{
float fSin = sin(anAngle);
float fCos = cos(anAngle);
return __MatrixMake( t.a * fCos + t.c * fSin,
t.b * fCos + t.d * fSin,
t.c * fCos - t.a * fSin,
t.d * fCos - t.b * fSin,
t.tx,
t.ty);
}
/* Concatenate `t2' to `t1' and return the result:
t' = t1 * t2 */
Matrix MatrixConcat(const Matrix& t1, const Matrix& t2)
{
return __MatrixMake( t1.a * t2.a + t1.b * t2.c, t1.a * t2.b + t1.b * t2.d, //a,b
t1.c * t2.a + t1.d * t2.c, t1.c * t2.b + t1.d * t2.d, //c,d
t1.tx * t2.a + t1.ty * t2.c + t2.tx, //tx
t1.tx * t2.b + t1.ty * t2.d + t2.ty); //ty
}
/* Return true if `t1' and `t2' are equal, false otherwise. */
bool MatrixEqualToTransform(const Matrix& t1, const Matrix& t2)
{
return (t1.a == t2.a && t1.b == t2.b && t1.c == t2.c && t1.d == t2.d && t1.tx == t2.tx && t1.ty == t2.ty);
}
Matrix MatrixInvert(const Matrix& t)
{
float determinant = 1 / (t.a * t.d - t.b * t.c);
return __MatrixMake(determinant * t.d, -determinant * t.b, -determinant * t.c, determinant * t.a,
determinant * (t.c * t.ty - t.d * t.tx), determinant * (t.b * t.tx - t.a * t.ty) );
}
};
