Appendix - An Introduction to Computer Graphics for Artists - page 289

Supplies/materials required :

• Clean Geometry checklist

• Drawing supplies

Instructions :

• Select a drawing by Leonardo DaVinci from his engineering drawings of mecha-

nical devices

- Giant crossbow

- Cannon

- Multiple crossbolt launcher

• Determine approximate dimensions of subject using geometric reduction tech-
nique combined with knowledge of real-world dimensions.

• Make plans of subject

• Construct polygonal replica of subject

- All models must be built at 100:1 scale (1 m = 1 cm)

- Build all parts fully in the round. This should have as many pieces as possible,

so that it may be rigged and animated

• Apply texture coordinates to model

• Apply reference map to model to check for distortion

• Check model against checklist and fi x all errors

• Deliver an archived fi le containing the following:

- Scene fi le

- Reference map

- A screen capture of the fi nished project with the object displayed in wire-

frame on shaded mode .

Criteria :

The project should be complete, delivered on time, resemble the source drawing and
be built to an acceptable standard of fi nish. All checklist errors are cause to reduce
the grade. The degree to which the submitted project does not resemble the source
drawing will cause a grade reduction.
Texture distortion is not allowed. If there is distortion, the grade will be lowered.
The reference map must be adequate to its purpose. If it is not designed in a way that
allows for easy distortion checking, the grade will be reduced.

Polygon Modeling 3: Alignment Illusion

Project type : Homework and workshop