@@ -5,10 +5,12 @@ const examples: Example[] = [
55 code : '(cos(x * t / 5) + sin(y * t / 5)) / 2' ,
66 } ,
77 {
8+ // Radial waves
89 code : '(cos(sqrt(x * x + y * y) - t) + 1) / 2' ,
910 grid : 'hex' ,
1011 } ,
1112 {
13+ // Floral pattern
1214 code : '(cos(sin(x * y) + t * 0.66) + 1) / 2' ,
1315 } ,
1416 {
@@ -18,13 +20,16 @@ const examples: Example[] = [
1820 code : 'sqrt(x*x + y*y) > (cos(x + t) + 1) / 2 * 5 ? noise(x + t, y + t) * 0.3 : 1' ,
1921 } ,
2022 {
23+ // 2d waves
2124 code : 'cos(x + t) > y * 0.3 + 0.5 ? (cos(x + t) + 1) / 4 + 0.5 : 0' , // 'cos(x + t) > y * 0.3 + 0.5 ? 0.8 : 0',
2225 } ,
2326 {
24- code : 'cos(t * 0.5) * 0.5 + 0.5' , // pulse
27+ // Simple pulse
28+ code : 'cos(t * 0.5) * 0.5 + 0.5' ,
2529 animate : 'opacity' ,
2630 } ,
2731 {
32+ // Spinning
2833 code : 'sin(0.5 * x + y * t * 0.8) * sin(t / 4)' ,
2934 grid : 'triangular' ,
3035 } ,
@@ -33,7 +38,7 @@ const examples: Example[] = [
3338 grid : 'hex' ,
3439 } ,
3540 {
36- code : ' sin(t) * sin(x) + cos(t) * cos(y)' ,
41+ code : 'sin(t) * sin(x) + cos(t) * cos(y)' ,
3742 grid : 'triangular' ,
3843 animate : 'opacity' ,
3944 } ,
@@ -42,24 +47,28 @@ const examples: Example[] = [
4247 grid : 'hex' ,
4348 } ,
4449 {
50+ // Windmill
4551 code : 'sin(3 * atan2(y,x) + t)' ,
4652 grid : 'hex' ,
4753 } ,
4854 {
55+ // Rain
4956 code : '1 - (((x + 3) * (x + 4) + y + t * 0.3 * (1 + x * x % 5) * 3) % 36) / 12' ,
5057 animate : 'opacity' ,
5158 } ,
5259 {
60+ // Diagonal wave
5361 code : '1 / abs((x + y) + (t * 4) % 70 - 35)' ,
5462 } ,
5563 {
5664 code : 'abs(sin(t / 3 * x / 2) * exp(1 - sqrt(pow(x / 2, 2) + pow(y / 2, 2))))' ,
5765 } ,
5866 {
67+ // Spinning circle
5968 code : '(3 / sqrt(((x * 1.5) - 6 * cos(t * 0.5)) ** 2 + ((y * 1.5) - 6 * sin(t * 0.5)) ** 2)) ** 2.5' ,
6069 grid : 'hex' ,
6170 } ,
62- /*
71+ /*
6372 https://news.ycombinator.com/item?id=41478068
6473
6574 // This script recognizes 17 regions and paints each region according to
@@ -102,8 +111,48 @@ const examples: Example[] = [
102111 */
103112 {
104113 code : '(abs(x)<5)*(1-t%1)**.3*((c,d)=>c&1&~(c+1?268656721+(d<5)*180268851>>d%5*6+c/2:d==2))((y>4)-5*(x>2)+(y>0)-(y<0)+5*(x<-2)-(y<-4)+5,t%10|0)'
114+ } ,
115+ {
116+ // Spiral wave
117+ // // Calculate the distance from the center
118+ // const distance = Math.sqrt(x * x + y * y);
119+
120+ // // Calculate the angle (in radians) of the point from the center
121+ // const angle = Math.atan2(y, x);
122+
123+ // // Parameters to adjust the spiral effect
124+ // const spiralTightness = 0.5;
125+ // const waveFrequency = 2;
126+ // const contractionSpeed = 0.1;
127+
128+ // // Create a smoother spiral effect
129+ // const spiral = distance + angle * spiralTightness;
130+
131+ // // Use sine to create a wave effect, and make it contract over time
132+ // const wave = Math.sin(spiral * waveFrequency - t * contractionSpeed);
133+
134+ // // Apply a smooth falloff based on distance from center
135+ // const falloff = 1 / (1 + distance * 0.2);
136+
137+ // // Combine wave and falloff, then normalize to 0-1 range
138+ // return (wave * falloff + 1) / 2;
139+ code : '(sin(sqrt(x * x + y * y) + atan2(y, x) * 1 - t) * 1 / (1 + sqrt(x * x + y * y) * 0.2) + 1) / 2'
140+ } ,
141+ {
142+ // Checkered pulse
143+ code : '(sqrt(x*x + y*y) < 6) ? (i % 2 ? 1:-1) * (sin(t * 0.6)) : 0' ,
144+ grid : 'triangular' ,
145+ } ,
146+ // Diamond waves
147+ {
148+ code : '(sin(abs(x) + abs(y) - t * 0.6) + 1) / 2' ,
149+ grid : 'hex' ,
150+ } ,
151+ {
152+ // Christmas tree
153+ code : 'ceil(((abs(t * 0.7)^2)*7) % 120) === i ? 0 : ((abs(y-6) - abs(x*2.3)) * (cos(t * 0.2) * 0.3 + 0.5))' ,
105154 }
106- ] ;
155+ ]
107156
108157export function getRandomExample ( ) : Example {
109158 return {
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