There is a main window to show a 3D model.

• Please drag the model with the left mouse button to rotate it.
• Use the 3D Model pull-down menu to change the 3D model. There are 17 models. They are Bunny, Dragon, Hand, Cessna, Fandisk, Elephant, Atenea, Bunny0 - 5, and Tiger0 - 5.
  NOTICE: The polygon numbers of Bunny4 - 5 and Tiger4 - 5 are too large to be executed.
• Use the Render Method pull-down menu to change the rendering method.
• Push the Level Control button will open the Level Control Window.
• Push the Simplify button will simplify the current model with specified threshold and open the Mesh Control Window. If the model has been simplified, to push this button will only open the control window.
• Push the Reset button will make all settings return to the initial states.

Use Level Control Window

• Select the threshold by using the scrollbar.
• Click the Display button will show the model's base-edge if the model has not been simplified and the current rendering method is set to be showing that. Otherwise, the current simplified model will be re-loaded and simplified again by using the selected threshold.
• Click the Close button will close this control window.

Use Mesh Control Window

• Select the steps of streaming mesh by using the scrollbar.
• Click the Display button will show the model with the selected step.
• Select the Real-time Rendering check-box will show the model as soon as changing the steps. Please check the performance of the client machine before selecting this item.
• Click the Close button will close this control window.