Algorithm (Workflow)

This function, updategco, updates a graphics object with new coordinates. It is part of the SolidGeometry library and is used in the fourBarLinkageplotanimui function.

Input Parameters

• h: Handle to the graphics object. If not provided, the current graphics object is used.
• PL: New point list. If not provided, an empty list is assumed.

Algorithm Steps

1. Retrieve the handle h from the input parameters or use the current graphics object if h is empty.
2. Retrieve the new point list PL from the input parameters.
3. Determine the type of the graphics object using get(h, 'type').
4. Use a switch statement to handle different types of graphics objects:
• Case 'line':
  • Convert the point list PL to a 3D format using VLaddz(CPLofPL(PL)).
  • Update the XData, YData, and ZData properties of the line object with the new coordinates.
• Case 'polygon':
  • If PL has two columns, create a polyshape object with the points and set it to the Shape property of the polygon object.
  • If PL has more than two columns, directly set PL to the Shape property.

Example Usage

The function can be used as follows:

SGfigure; 
h = PLplot(PLcircle(10), 'b--', 4); 
updategco(h, PLsquare(4, 5));

This example creates a figure, plots a circle, and then updates the plot with a square.