| Top Page |

Introduction Enter a mathematical function, and this program will render the function in a 3D space. You can change viewpoint arbitrary with an intuitive operation. The function you input is a function of 'x', 'y' and 't'. 'x','y' represent the axis of coord the function is defined.And 't' represent time. For example the wave propagation in the direction of axis x is     sin(10*x-t) If the function you enter is a function of time, like previous example, you can stop or restart the time with "Pose" or "Play" button.

	Rotation		Drug the middle button of mouse
	Parallel displacement		��������
	Zoom In / Out		[Pg Up] Key for zoom in, [Pg Dn] Key for zoom out
	The distance of viewpoint		[End] Key to switch the distance is finit / infinit If the distance id finit, press Shift Key with [Pg Up] Key for shorter distance, and Press Shift Key with [Pg Dn] Key for longer distance
	Reset		[Home] Key initialize the Viewpoint

	Ripple
	0.05/(sqrt(x*x+y*y)+0.1)*sin(15*sqrt(x*x+y*y)-2*t)

	Operands
		x Coordinate x y Coordinate y t Time PI circle ratio
	Binary Operators
		+ Addition - Substraction * Multiplication / Division ^ Exponation
	Unary Operators
		+x sign + -x sign - abs(x) Absolute value floor(x) Maximum integral not exceed x sqrt(x) x^0.5 exp(x) e^x log(x) Natural Logalithm sin(x) Sine cos(x) Cosine