CSE 325 Computer Science and Sculpture Prof George

CSE 325 Computer Science and Sculpture Prof. George Hart

Lecture 5 Organic Polyhedral Forms New operations: • Subdivide, Average Vertices, Smooth • Creating openings • “Keep faces together” while extruding • Convert Selection, Expand Selection • Extrude with twist

Hyperbolic Icosahedron From www. mathworld. com Maya version

Hyperbolic Icosahedron • Subdivide icosahedron three times with quads • Select the original 12 vertices • Invert Selection (so all but corners can move) • Average Vertices many times

Stylized Cube

Steps to make “Stylized Cube” 1. Subdivide a cube to 1/8 the edge length 2. In face mode, delete all but edge facets. An orthogonal view makes it easy to select front and back. 3. Polygon | Tool Options | Keep faces together Extrude faces slightly. 4. In vertex mode, select all vertices except the corners. Average vertices several times. 5. Smooth

Soft Dodecahedron

Soft Dodecahedron • Subdivide dodecahedron, first with triangles, then twice with quads. • Select vertices at centers of faces. • Convert selection to faces. • Expand selection twice. • Delete the selected faces. • Extrude (keep faces together) • Smooth twice.

Chimney by Antonio Gaudi Cameron Browne’s reconstruction Park Guell, Barcelona

Gaudi-Style Chimney • Select top face of a cube • Extrude Face □ window: – – – The columns are: U, V, Normal Translate 3 in Normal direction Rotate 720 about Normal axis Scale 0. 3 in U and V direction Set 50 divisions. Apply. • On another cube, do -720 rotation (Translate the 1 st with the channel box to move it away temporarily. ) • Union the two and Smooth