REBOL [ Title: {"Star Wars" reminiscent intro} Date: 29-Jun-2005 Author: "Bohdan Lechnowsky" File: %swintro.r Purpose: { To demonstrate AGG and 3D-type calculations using Rebol } Notes: { Thanks to Anton Rolls via AltME Rebol3 world for his excellent modifications } Library: [ level: 'intermediate platform: 'all type: [demo fun] domain: [graphics visualization] tested-under: none support: none license: none see-also: none ] ] fovsz: 640x480 ;system/view/screen-face/size layout compose [starfield: image (fovsz) black] starfield: to-image starfield loop 1000 [ col: random 255 starcol: to-tuple reduce [col col col] poke starfield random fovsz/x * fovsz/y starcol ] view/new layout/offset/origin compose [ b: image starfield effect [draw []] rate 30 feel [ engage: func [face action event][ if action = 'time [update-image] ] ] ] either fovsz = system/view/screen-face/size [0x0][20x20] 0x0 hvector: func [x y v][ (fovsz/x / fov) * (fov / 2 + either zero? pos/2 - y [90][arctangent (pos/1 - x) / (pos/2 - y)]) ] vvector: func [y z v][ (fovsz/y / fov) * (fov / 4 + either zero? pos/2 - y [90][arctangent (pos/3 - z) / (pos/2 - y)]) ] map: parse/all trim/auto {A New Beginning Rebol HQ, led by their jedi leader, Carl Sassenrath, has begun preparations to strike back against Darth Gates at the Redmond system during a time of growing unrest among the netizens of the Empire. As the Empire works to complete construction of their hailed planetary domination device, code named "Longhorn Death Star", small centers of resistance continue to gain support among the oppressed masses. Even with mounting support, only One is powerful enough to overcome the dark side of the Force -- Rebol/View 1.3 } "^/" mapimg: copy [] foreach line map [ b1: layout/origin compose/deep [text (line) 840 center font-size 48 sky black (either any [line = map/1 line = last map]['bold][])] 0x0 append mapimg to-image b1 ] pos: [0 30 20] dir: [0 0] fov: 45 l: pos/2 update-image: does [ agg: clear [] x: 0 y: 0 foreach item mapimg [ y: y + 5 if y < pos/2 [ append agg compose [ image (item) (to-pair reduce [hvector x + 15 y dir/1 vvector y 0 dir/2]) (to-pair reduce [hvector x - 15 y dir/1 vvector y 0 dir/2]) (to-pair reduce [hvector x - 15 y + 5 dir/1 vvector y + 5 0 dir/2]) (to-pair reduce [hvector x + 15 y + 5 dir/1 vvector y + 5 0 dir/2]) black ] ] ] b/effect/draw: agg show b pos/2: l either l < 200 [l: l + 0.2][quit] ] do-events