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5d602d0ba0
we shouldn't never specify a specific screen implementation in the examples, otherwise they won't run on platforms where that implementation is not available. We should always try asking for the default implemenation for the platform we are running on (by omitting the argument when requesting for the screen pointer)
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();
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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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