2003 Web3D 00P249
2003 : 00P249,,, CG
1 1 1.1................................. 1 1.2................................. 3 1.3.............................. 3 2 4 2.1............................... 4 2.2..................... 7 3 8 3.1............................... 8 3.2............................... 9 3.3............................ 10 3.3.1.................... 10 3.3.2........................ 10 4 12 4.1............................. 12 4.2................................. 15 4.2.1............... 15 4.2.2........................... 16 4.3......................... 16 5 22 5.1................................... 22 5.2................................... 24 6 26 6.1............................ 26 27 I
II 28
1 1.1 CG [1] [2] [3] CG [4] [5] [6] PC 3D 1
CG 2 [7] [8] [9] [10] 2
1.2 CG 1.3 3
2 2.1 2 540 20 [11][12] 4
[13] 2.1 ( ) 5
2.1: ( ) c [14] [15] 2.2 6
2.2: ( ) c 2.2 [16] 7
3 3.1 [13] [17] 8
3.2 3.1: c [18] 9
3.3 3.3.1 [19] 1:2 [11] 3.3.2 2 [20] 2 10
3.2: c ( ) [21] 3.2 CG 11
4 4.1 [9] 4.1 D(n) D(n) = β(cos αn + 1.0) (4.1) α β 12
4.1: 4.2, 4.3 13
4.2: 4.3: 14
4.2 4.2.1 4.4 4.4: 15
4.2.2 4.3 4.5 16
4.5: 1. T[s] t[s] r[-] A[cm 2 ] δx[cm] p[g/cm 3 ] E[g/s2 cm] k[-] ( Section ) l i (0)[cm] δf δx 17
δf = k δx (4.2) 2. x y t r(t) T R r(t) = R t T (4.3) 3. F F i = k i r i r j r i r j ( r i r j l i (0)) (4.4) 1 r i r j 4. / δf F i < δf Stable( ) (4.5) 5. k i i 18
l i (t) = k i l i (0) (4.6) (4.6) l i (t) l i (0) t Section l i (t) l i (0) 3 2 3 3 3 19
1 1/2 1/2 4 4.6 1 4.6: 1 2 2 4.7 2 4.7: 2 20
3 3 1 2 3 4.8 3 4.8: 3 21
5 4 5.1 3D FK System[22] 4 5.1-5.4 5.1: 1 Section 22
5.2: 2 60 Section 5.3: 3 100 Section 23
5.4: 4 150 Section 5.1-5.4 5.4 5.2 24
2000 25
6 6.1 26
( ) 27
[1] Julie Dorsey Modeling and Rendering of Metallic Patinas, SIG- GRAPH, pp. 387-396, 1996. [2] Julie Dorsey Modeling and Rendering of Weathered Stone, SIG- GRAPH, pp. 225-234, 1999. [3],,,, Vol2 No.1 pp.31-39, 2003. [4], http://ew.hitachi-system.co.jp/w/vr.html. [5], http://www.jfp.co.jp/garden/index1-2.htm. [6], http://www.kenken.go.jp/japanese/contents/topics/ urban/keikan/simula/panel.htm. [7],, Vol.1, No.3, pp.108-110, 2002. 28
[8],, Vol41, No.3, pp.586-593, 2000. [9],, Vol.35, No.3, pp.461-467, 1994. [10],, Vol37, No.12, pp.2235-2242, 1996. [11], http://www.d8.dion.ne.jp/ log/kinohanasi.htm. [12] Part2, http://www.powerstage.com/ kenmokujyu/dictio/cisiki/default 2.html. [13], http://dougukan.jp/bunka/b11.html. [14], http://f030091.ffpri.affrc.go.jp/index1.html. [15], http://www.tokusen.info/minoru/material/01.html. [16],,,, 2001. [17], http://www.recpas.or.jp/jigyo/report web/html 0023/hon023 020.htm. [18], http://homepage2.nifty.com/mokuseisha/ki nenrin.htm. [19], C.,, 1999. 29
[20], http://www.pref.ehime.jp/060nourinsuisan/080ringyou/ 00001461021016/3 rinsan/18.19.htm. [21], http://www.ad.wakwak.com/ za-daiku/yomoyama7-3.htm. [22] FK Toolkit System, http://www.teu.ac.jp/media/ earth/fk/. 30