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108 lines
1.9 KiB
JavaScript
108 lines
1.9 KiB
JavaScript
// freej script to test randomness
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// this also shows keyboard interactivity
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// and smart use of function pointers
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// (C)2005 Denis Jaromil Rojo - GNU GPL
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// W = get_width();
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// H = get_height();
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W = 400;
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H = 300;
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scr = new Screen("sdl");
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scr.init(W,H);
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add_screen(scr);
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function draw_pixels(rand_geo) {
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var x, y;
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x = rand()%W;
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y = rand()%H;
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if(x<0) x = -x;
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if(y<0) y = -y;
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rand_geo.pixel(x,y);
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}
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function draw_triangles(rand_geo) {
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var x1, x2, x3;
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var y1, y2, y3;
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x1 = rand()%W;
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x2 = rand()%W;
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x3 = rand()%W;
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y1 = rand()%H;
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y2 = rand()%H;
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y3 = rand()%H;
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if(x1<0) x1 = -x1;
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if(x2<0) x2 = -x2;
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if(x3<0) x3 = -x3;
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if(y1<0) y1 = -y1;
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if(y2<0) y2 = -y2;
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if(y3<0) y3 = -y3;
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rand_geo.trigon_fill(x1,y1,x2,y2,x3,y3);
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}
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function draw_ellipses(rand_geo) {
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var x, y;
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var rx, ry;
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x = rand()%W;
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y = rand()%H;
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rx = rand()%(W/2);
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ry = rand()%(H/2);
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if(x<0) x = -x;
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if(y<0) y = -y;
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if(rx<0) rx = -rx;
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if(ry<0) ry = -ry;
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rand_geo.ellipse_fill(x, y, rx, ry);
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}
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function randomize_color(rand_geo) {
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var r, g, b;
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r = rand() % 255;
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g = rand() % 255;
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b = rand() % 255;
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if(r<0) r = -r;
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if(g<0) g = -g;
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if(b<0) b = -b;
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rand_geo.color(r,g,b,150);
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}
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rand_geo = new GeometryLayer(W,H);
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//rand_geo.set_blit("alpha");
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//rand_geo.set_blit_value(0.5);
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//rand_geo.activate(true);
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//geo.set_fps(24);
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rand_geo.start();
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scr.add_layer(rand_geo);
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running = true;
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rand_kbd = new KeyboardController();
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rand_kbd.released_q = function() { quit(); }
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rand_kbd.released_p = function() { drawer = draw_pixels; }
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rand_kbd.released_t = function() { drawer = draw_triangles; }
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rand_kbd.released_e = function() { drawer = draw_ellipses; }
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register_controller( rand_kbd );
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drawer = draw_triangles;
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rand_bang = new TriggerController();
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rand_bang.frame = function() {
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randomize_color(rand_geo);
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drawer(rand_geo);
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}
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register_controller(rand_bang);
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