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/*
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city-reflection.cfdg
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by AK, Jan 2009
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city.cfdg with reflections
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Variants: IOH, XCZ, ...
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*/
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startshape city
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background { b -0.90 h 270 sat 0.5 }
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/** city has horizontal "skyline" strips vanishing into
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distance **/
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rule city {
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skyline{y -20}
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city { s -0.9 0.85 0.9 }
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}
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rule city 0.1{} // on average 10 skyline strips
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rule skyline{ // each strip consists of two half-strips
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back-to-back
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semiskyline{ x 9 }
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semiskyline { x 3 flip 90 }
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}
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rule semiskyline 2 {
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building_site{}
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semiskyline { x 15 }
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}
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rule semiskyline 2 {
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building_site{}
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semiskyline { x 20 }
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}
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rule semiskyline{} // on average 5 building sites per
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semiskyline
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/*************** building sites: some occupied, some vacant
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***********/
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rule building_site 2{
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building{s 10 10 10} // building drawn in the plane
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z=10 with reflection drawn in the plane z=-10
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G{s 50 5 b 0 sat 1 h 60}
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haze {z 9.9 }
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haze {z 10.1 }
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}
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rule building_site 1{
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G{s 50 5 b 0 sat 1 h 60}
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haze {z 9.9 }
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}
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/* Each building has a random number of +/- 20% rescaling
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steps applied to it. */
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rule building 3{building{ s 1 0.8}}
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rule building 3{building {s 1 1.2}}
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rule building 2{building{ s 0.8 1}}
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rule building 2{building {s 1.2 1}}
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/* There are three types of buildings, of height 1, 2 or 4
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units.
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Each has a matching reflection that is proportional
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to the building. */
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rule building{ B1{ z 1} R1{z -1} }
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rule building{ B2{z 1} R2{z -1} }
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rule building{ B3{z 1} R3{z -1} }
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rule B1{BOX{}}
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rule B2{B1{y 1}B1{}}
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rule B3{B2{y 2}B2{}}
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/* There are three different styles of reflection possible
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*/
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// Style 1: reflections on rough water
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rule R1{RF{ s 1.2 -1.4 y -0.5 b 0.5 sat 0.3 h 180}}
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rule R2{RF{ s 1.2 -2.8 y -0.5 b 0.7 sat 0.3 h 180}}
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rule R3{RF{ s 1.2 -5.6 y -0.5 b 0.9 sat 0.3 h 180}}
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/* vvv----------- unused code --------vvv
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// Style 2: reflections on smooth water - not so good as
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different windows are lit
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rule R1{B1{h 240 sat 0.5 b -0.5 s -1}}
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rule R2{B2{h 240 sat 0.5 b -0.5 s -1}}
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rule R3{B3{h 240 sat 0.5 b -0.5 s -1}}
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// Style 3: tapered reflections on smooth water
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rule R1{BOX{h 240 sat 0.5 b -0.5 s -1}}
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rule R2{R1{ y -1 s 0.8 1} R1{ s 1.2 1} }
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rule R3{R2{ y -2 s 0.64 1 } R2{ s 1.44 1}}
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^^^----------- unused code -----------^^^ */
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/* This is the element from which buildings are built. A
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box with windows. */
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rule BOX{
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SQUARE{ y 0.5 }
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wa{ y 0.5 s 0.8 1 z 0.1}
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}
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/* get windows on BOX by progressive subdivision */
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rule wa{ wb { s 1 0.5 y -0.25 } wb{ s 1 0.5 y 0.25 } }
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rule wb{ wc{ s 1 0.5 y -0.25 } wc{ s 1 0.5 y 0.25 } }
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rule wc{ wd{ s 0.5 1 x -0.25 } wd { s 0.5 1 x 0.25 }}
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rule wd{ we{ s 0.5 1 x -0.25 } we { s 0.5 1 x 0.25 }}
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/* but only some windows are lit */
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rule we 2 {}
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rule we{ win{}}
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/* some alternative window subdivision pathways that give
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all or no lit windows on a floor */
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rule wc 0.1{ wdx{ s 0.5 1 x -0.25 } wdx { s 0.5 1 x 0.25 }}
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rule wc 0.1{}
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rule wdx{ win{ s 0.5 1 x -0.25 } win { s 0.5 1 x 0.25 }}
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/* possibly tweak window colour and brightness */
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rule win 3{ win {b 0.2 }}
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rule win 3{ win {b -0.2 }}
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rule win { win {h 20 }}
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/* a window */
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rule win{
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SQUARE { size .8 0.7 b .5 sat +0.2 }
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SQUARE { s 0.1 0.8 b -1} // vertical divider
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// SQUARE { s 0.8 0.1 b -1} // horizontal divider
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}
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/* Reflection on rough water.
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The tear-drop shape comes from a shape
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being scaled non-proportionally
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while progressively shifted. */
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rule RF{
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SPARKLE{ s 2 0.1 x 1}
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SPARKLE{ s 2 0.1 b 0.2}
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RF[ y 1 s -0.9 0.96 y -1 b -0.02]
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}
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rule SPARKLE{ // shiny filler
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CIRCLE{ s 1.5 0.5 a -0.98}
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6 * {r 60} SPARK { s 0.15 x 0.5 a -0.8}
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}
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rule SPARK{TRIANGLE{}}
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rule SPARK 5{SPARK{r 222}}
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rule SPARK 2{SPARK{x 1}}
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rule SPARKLE 5 {SPARKLE{r 223}}
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rule SPARKLE 2{
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SPARKLE{s 0.7 x 0.5}
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SPARKLE{s 0.7 x -0.5}
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}
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rule SPARKLE 0.5{}
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/* Ground - a generic blobby shape */
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rule G{ CIRCLE{} }
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rule G{ CIRCLE{}
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G{ y -0.5 s 0.7 0.7 r 60}
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G{ y -0.5 s 0.7 0.7 r -60} }
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rule G{ G {r 10}}
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rule G{G { flip 90}}
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rule G 0.2{}
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/* ------------ Ground level haze ------------*/
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rule haze { haze { x .1 }}
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rule haze { haze { x -.1 }}
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rule haze {
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hazecircle { }
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haze { s 1 0.3 x .5 b .3}
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haze { s 1 0.3 x -.5 b .3}
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}
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rule haze .5{}
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rule hazecircle { hazecircle { r 10 }}
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rule hazecircle { hazecircle { flip 90 }}
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rule hazecircle {
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CIRCLE { s 30 20 z 0.1 h 40 b 0.5 sat .2 a -0.98 }
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}
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@ -0,0 +1,145 @@
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startshape Scene
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CF::Impure = 1
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//CF::Background = [b -0.8 sat 1 h 200]
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CF::Background = [b -0.8]
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CF::Size = [s 3]
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//random variable that controls how straight the path is
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bend = -5..-1
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shape Scene {
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// Storm
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Path(29.5,0,160..200,0) [s (1/60)]
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// Square
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//loop 10 [s 0.998 a -0.2] Frame [s 0.5 z 1000 b 1 sat 0.4 h 180]
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loop 10 [s 0.998 a -0.2] Frame [s 0.5 z 1000 b 0.96 sat 0.81 h 38]
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// Outer square
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//loop 10 [s 1.003 a -0.2] Frame [s 0.5 z 1000 b 1 sat 0.4 h 180]
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loop 10 [s 1.003 a -0.2] Frame [s 0.5 z 1000 b 0.96 sat 0.81 h 38]
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// Backgroud glow
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//Glow []
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}
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path Frame
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{
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MOVETO(1,1)
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LINETO(-1,1)
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LINETO(-1,-1)
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LINETO(1,-1)
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CLOSEPOLY()
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STROKE(0.01) []
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}
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shape Path (number px, number py, number pr, number idx)
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rule 4000 {
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// number of steps to take
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if (idx < 2000) {
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if (max(abs(px),abs(py)) < 30 ) {
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//change the values in rand to
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//alter the behaviour of the beam
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Path( px + cos(pr), py + sin(pr), pr + rand(bend,2), idx + 1 ) []
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// glowing beam
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transform [x px y py r pr ] {
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loop 10 [s 1 1.5 a -0.4] SQUARE [
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// notranje strele
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b 0.96 sat 0.81 h 38 s 0.85 0.08]
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//b 1 sat 0.4 h 180 s 0.85 0.08]
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}
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}
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else {
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Flash[x px y py z 1 s 1.5]
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//detect which edge we have crossed and reflect
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if (px > 30) {
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Path(px/1.004 - cos(pr), py+sin(pr), 180-pr, idx +1) []
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Lightning [ x px y py r -5..5]
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}
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if (px < -30) {
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Path(px/1.004 - cos(pr), py+sin(pr), 180-pr, idx +1) []
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Lightning [[ x px y py r -5..5 r 180]]
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}
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if (py > 30) {
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Path(px + cos(pr), py/1.004 - sin(pr), pr*-1, idx +1) []
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Lightning [[ x px y py r -5..5 r 90]]
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}
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if (py < -30) {
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Path(px + cos(pr), py/1.004 - sin(pr), pr*-1, idx +1) []
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Lightning [[ x px y py r -5..5 r -90]]
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}
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}
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}
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// done iterating, draw the particle!
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else { Flash[[ x px y py z 1 r pr s 1.5 0.4 ]] }
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}
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// Pike na kvadratu
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shape Flash{
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loop 10 [s 1.4 a -0.4]
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//CIRCLE[b 1 sat 0.4 h 180 s 0.6..1]
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CIRCLE[b 0.96 sat 0.81 h 38 s 0.6..1]
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}
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shape Lightning
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rule 10{
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LightningUnit []
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Lightning [x 1]
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Glow2 [s 2 a -0.5]
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}
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rule 1.5 {
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Lightning[r 30..45]
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Glow2 [s 4 a -0.5]
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}
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rule 1.5 {
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Lightning[r -30..-45]
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Glow2 [s 4 a -0.5]
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}
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rule 1 {
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// s 0.6 normally
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Lightning[r 20..45 s 0.6 0.8 a -0.5]
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Lightning[r -20..-45 s 0.4 0.8 a -0.5]
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Glow2 [s 4 a -0.5]
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}
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// Strele zunaj
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shape LightningUnit {
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loop 20 [s 1 1.1 a -0.2]
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//SQUARE [b 1 sat 0.4 h 180 s 0.89 0.1 x 0.5]
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SQUARE [b 0.96 sat 0.81 h 38 s 0.89 0.1 x 0.5]
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}
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shape Glow {
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loop 30 [s 0.97 a -0.04 ]
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//CIRCLE [s 2.3..2.5 x -0.1..0.1 y -0.1..0.1 b 1 sat 0.6 h 180 a -0.97]
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CIRCLE [s 2.3..2.5 x -0.1..0.1 y -0.1..0.1 b 0.96 sat 0.81 h 38 a -0.97]
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}
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shape Glow2 {
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loop 5 [s 0.7 a -0.4 ]
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//CIRCLE [s 2.3..2.5 x -0.1..0.1 y -0.1..0.1 b 1 sat 0.4 h 180 a -0.99]
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CIRCLE [s 2.3..2.5 x -0.1..0.1 y -0.1..0.1 b 0.96 sat 0.81 h 38 a -0.99]
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}
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// BNR AKL ABD VFF VFJ VFL VFP
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@ -0,0 +1,14 @@
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background{b -.95 sat 1 h 270}
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startshape init
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rule init{turn{sat -1 b 1 a -.995 |sat -1}}
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rule turn{
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CIRCLE{x 1.77 y .13 s .5} SQUARE{x .5 y -.05 s 1 .1 sat
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-1}
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turn{ |sat .05 sat 1| a .1 z 1 r -2.072 s 0.299}
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turn{ |sat .05 sat 1| a .1 z 1 x 1 r 45.928 s
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(1/sqrt(.85)*0.299)}
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turn{ |sat .05 sat -1 h 144 z 1 x
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(1+1/sqrt(.85)*cos(48)) y (1/sqrt(.85)*sin(48)) r -48 s
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(sqrt(.85))}
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}
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@ -0,0 +1,19 @@
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startshape r0
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background {b -1}
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rule r0{16*{a -0.2}r1{b 1}}
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rule r1 {r2[] r2[s 0.5 x 2.5] r1[x 2.5]}
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rule r1 {r2[] r2[s 0.5 y 2.5] r1[y 2.5]}
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rule r1 {r1[skew 0 5]}
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rule r1 {r1[skew 0 -5]}
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rule r1 0.3 {r1 {f 0} r1 {f 45}}
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rule r1 {r1[s 0.8]}
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rule r2 {r4{a -100 b -100 } r3{}}
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rule r4 {CIRCLE[a 0.008 b 0.8 s 10]}
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rule r3 { CIRCLE{}}
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rule r3 { TRIANGLE{}}
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rule r3 { SQUARE{}}
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rule r3 { r3{b 1} r3{r 45 b -1 s 0.8}}
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rule r3 4 {r3{s 0.9}}
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