- Q and W: rotate the arm.
- E and R: move along the arm.
- A and Z: lift and decline the claw.
- S and D: rotate the claw
- X and C: open and close the claw
- O and P: ortho and perspective view
- 1, 2 and 3: switch between different views.
- space: the claw grabs.
Given a set of vertices of lines, draw the lines along with outlines.
- Click on the display window to draw triangles.
- Click on the color panel at the bottom of the display window to choose a color.
- Click on a triangle to select it, and drag it to move it.
- Click on a vertex to selcet it, and drag it to move it.
- Use w a s d keys for translating the view or the selected triangle.
- Use c v keys for scaling the view or the selected triangle.
- Use the z key to restore the view to its original state.
- Use e r keys for rotating the selected triangle.
- W and S to move.
- A and D to rotate by 90 degrees horizantally.
- Draging mouse to change the point of view by any degrees.
- One of the exhibition is interactable.


