To load the pre-drawn curve, load .txt file to the editor.
To edit the existing curve, drag the green points of the curve on the canvas.
To duplicate the curve, click any control point of the curve you want to duplicate, and then click duplicate button to make a copy of the curve.
To add new curve, click "Add New" button. The initial curve has 4 control points. Click on the screen to add more control points.
When finish adding control points, click "Finish" button.
To undo, click "Undo".
To redo, click "Redo".
To delete a curve, click the "Delete OFF" button. When the button changes to "Delete ON", click.
any of the end points that belong to the curve that you want to delete, and the curve will be deleted.
If you want to delete control points, click a control point (not end point) and the control point will be deleted.
To see the location of any point, click any point and the xy coordinate will be displayed after "Location:".
To save the workspace to local device, type in the file name in "Save to file" input field and click "Save object data".
To restore any workspace from local file, click "Choose File" button, select the object file, and click "Load Selected File".
To hide the green control points, click "Hide Control Points" button to hide the points. Click again to show the points.
Instruction for 3d viewer
After each edit, the 3d model of the bezier curves will automatically rendered in the viewer
Use the "Rotate" slider to rotate the model along x-axis
Click "Animate" button to see the motion of the model move along a bezier curve
Select the material you would like the model to have