SwDimension

typedef struct _swDimension{
	float w;
	float h;
}swDimension;

swDimension* swDimensionCreate(float w,float h);
void swDimensionDestroy(swDimension *dimension);
void swDimensionSet(swDimension *p,float w,float h);
void swDimensionCopy(swDimension *copy,swDimension *real);
swDimension* swDimensionClone(swDimension *real);
bool swDimensionEquals(swDimension *dimension1,swDimension *dimension2);