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CSE325 Computer Science and Sculpture

CSE325 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.

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CSE325 Computer Science and Sculpture

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  1. CSE325 Computer Science and Sculpture Prof. George Hart

  2. 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

  3. Hyperbolic Icosahedron From www.mathworld.com Maya version

  4. 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

  5. Stylized Cube

  6. 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

  7. Soft Dodecahedron

  8. 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.

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

  10. 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 1st with the channel box to move it away temporarily.) • Union the two and Smooth

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