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examples: fix indentation

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This commit is contained in:
Matthias Schiffer 2016-02-02 08:23:02 +01:00
parent d28929a69b
commit df096b4b4e
11 changed files with 231 additions and 231 deletions
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32
examples/checkers.frag
View file

@ -11,29 +11,29 @@ const float PI = 3.14159265358979323846;
mat2 rot(float a) { mat2 rot(float a) {
return mat2( return mat2(
cos(a), -sin(a), cos(a), -sin(a),
sin(a), cos(a) sin(a), cos(a)
); );
} }
void main(void) { void main(void) {
vec2 m = res/2; vec2 m = res/2;
float s = min(m.x, m.y); float s = min(m.x, m.y);
vec2 p = (gl_FragCoord.xy - m) / s; vec2 p = (gl_FragCoord.xy - m) / s;
float repeat = 8.0; float repeat = 8.0;
float time_mod = mod(time / 200, repeat); float time_mod = mod(time / 200, repeat);
float w = 20 * pow(2, time_mod); float w = 20 * pow(2, time_mod);
float f = time_mod / repeat; float f = time_mod / repeat;
vec2 pr = p * rot(f * PI/2); vec2 pr = p * rot(f * PI/2);
float tp = mod(floor(log2(abs(pr.x/w)) + floor(log2(abs(pr.y/w)))), 2); float tp = mod(floor(log2(abs(pr.x/w)) + floor(log2(abs(pr.y/w)))), 2);
float darken = min(min(abs(pr.x), abs(pr.y)) / 0.01, 1.0); float darken = min(min(abs(pr.x), abs(pr.y)) / 0.01, 1.0);
float scene = tp * darken; float scene = tp * darken;
fragColor = vec4(vec3(1, 1, 1) * scene, 1); fragColor = vec4(vec3(1, 1, 1) * scene, 1);
} }

46
examples/polygon.frag
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@ -11,44 +11,44 @@ const float PI = 3.14159265358979323846;
mat2 rot(float a) { mat2 rot(float a) {
return mat2( return mat2(
cos(a), -sin(a), cos(a), -sin(a),
sin(a), cos(a) sin(a), cos(a)
); );
} }
float poly(float n, vec2 m, float r, float rt, vec2 p) { float poly(float n, vec2 m, float r, float rt, vec2 p) {
vec2 diff = (m - p) * rot(rt); vec2 diff = (m - p) * rot(rt);
float d = length(diff); float d = length(diff);
float alpha = PI / n; float alpha = PI / n;
float gamma = mod(abs(atan(diff.x, diff.y)), alpha*2); float gamma = mod(abs(atan(diff.x, diff.y)), alpha*2);
if (gamma > alpha) if (gamma > alpha)
gamma -= 2*alpha; gamma -= 2*alpha;
float r2 = r * cos(alpha) / cos(gamma); float r2 = r * cos(alpha) / cos(gamma);
return clamp((r2 - d)*sharpness, 0.0, 1.0); return clamp((r2 - d)*sharpness, 0.0, 1.0);
} }
float poly_d(float n, vec2 m, float r, float rt, vec2 p) { float poly_d(float n, vec2 m, float r, float rt, vec2 p) {
return poly(n, m, r, rt, p) - poly(n, m, r - 1/sharpness, rt, p); return poly(n, m, r, rt, p) - poly(n, m, r - 1/sharpness, rt, p);
} }
void main(void) { void main(void) {
vec2 m = res/2; vec2 m = res/2;
float s = min(m.x, m.y); float s = min(m.x, m.y);
vec2 p = (gl_FragCoord.xy - m) / s; vec2 p = (gl_FragCoord.xy - m) / s;
float scene = 0; float scene = 0;
float c; float c;
c = poly_d(5 - 3*cos(time/1000), vec2(0, 0), 0.5, PI * time/1000, p); c = poly_d(5 - 3*cos(time/1000), vec2(0, 0), 0.5, PI * time/1000, p);
scene = abs(scene - c); scene = abs(scene - c);
c = poly_d(5 - 3*cos(time/1000), vec2(0, 0), 0.5, -PI * time/1000, p); c = poly_d(5 - 3*cos(time/1000), vec2(0, 0), 0.5, -PI * time/1000, p);
scene = abs(scene - c); scene = abs(scene - c);
fragColor = vec4(vec3(1, 1, 1) * scene, 1); fragColor = vec4(vec3(1, 1, 1) * scene, 1);
} }

34
examples/snail.frag
View file

@ -8,34 +8,34 @@ uniform float time;
const float sharpness = 300; const float sharpness = 300;
mat2 rot(float a) { mat2 rot(float a) {
return mat2( return mat2(
cos(a), -sin(a), cos(a), -sin(a),
sin(a), cos(a) sin(a), cos(a)
); );
} }
float circle(vec2 m, float r, vec2 p) { float circle(vec2 m, float r, vec2 p) {
vec2 diff = m - p; vec2 diff = m - p;
float d = sqrt(dot(diff, diff)); float d = sqrt(dot(diff, diff));
return clamp((r - d)*sharpness, 0.0, 1.0); return clamp((r - d)*sharpness, 0.0, 1.0);
} }
float circle_d(vec2 m, float r, vec2 p) { float circle_d(vec2 m, float r, vec2 p) {
return circle(m, r, p) - circle(m, r - 1/sharpness, p); return circle(m, r, p) - circle(m, r - 1/sharpness, p);
} }
void main(void) { void main(void) {
vec2 m = res/2; vec2 m = res/2;
float s = min(m.x, m.y); float s = min(m.x, m.y);
vec2 p = (gl_FragCoord.xy - m) / s; vec2 p = (gl_FragCoord.xy - m) / s;
float scene = 0; float scene = 0;
for (int i = 1; i <= 50; i++) { for (int i = 1; i <= 50; i++) {
float c = circle_d(vec2(0.5, 0) * rot(time/500/i), 0.1 + 0.005*i, p); float c = circle_d(vec2(0.5, 0) * rot(time/500/i), 0.1 + 0.005*i, p);
scene = abs(scene - c); scene = abs(scene - c);
} }
fragColor = vec4(vec3(1, 1, 1) * scene, 1); fragColor = vec4(vec3(1, 1, 1) * scene, 1);
} }

62
examples/square-in-circle.frag
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@ -11,56 +11,56 @@ const float PI = 3.14159265358979323846;
mat2 rot(float a) { mat2 rot(float a) {
return mat2( return mat2(
cos(a), -sin(a), cos(a), -sin(a),
sin(a), cos(a) sin(a), cos(a)
); );
} }
float circle(vec2 m, float r, vec2 p) { float circle(vec2 m, float r, vec2 p) {
vec2 diff = m - p; vec2 diff = m - p;
float d = sqrt(dot(diff, diff)); float d = sqrt(dot(diff, diff));
return clamp((r - d)*sharpness, 0.0, 1.0); return clamp((r - d)*sharpness, 0.0, 1.0);
} }
float circle_d(vec2 m, float r, vec2 p) { float circle_d(vec2 m, float r, vec2 p) {
return circle(m, r, p) - circle(m, r - 1/sharpness, p); return circle(m, r, p) - circle(m, r - 1/sharpness, p);
} }
float square(vec2 m, float a, float r, vec2 p) { float square(vec2 m, float a, float r, vec2 p) {
vec2 diff = abs((m - p) * rot(r)); vec2 diff = abs((m - p) * rot(r));
float d = max(diff.x, diff.y); float d = max(diff.x, diff.y);
return clamp((a - d)*sharpness, 0.0, 1.0); return clamp((a - d)*sharpness, 0.0, 1.0);
} }
void main(void) { void main(void) {
vec2 m = res/2; vec2 m = res/2;
float s = min(m.x, m.y); float s = min(m.x, m.y);
vec2 p = (gl_FragCoord.xy - m) / s; vec2 p = (gl_FragCoord.xy - m) / s;
float scene = 0; float scene = 0;
int n = 20; int n = 20;
float b = 1; float b = 1;
float alpha = 0; float alpha = 0;
for (int i = 0; i < n; i++) { for (int i = 0; i < n; i++) {
float c; float c;
c = circle_d(vec2(0, 0), b, p); c = circle_d(vec2(0, 0), b, p);
scene = abs(scene - c); scene = abs(scene - c);
float delta = mod(time/5000, PI/2); float delta = mod(time/5000, PI/2);
alpha = mod(alpha + delta, PI/2); alpha = mod(alpha + delta, PI/2);
b /= sqrt(2); b /= sqrt(2);
c = square(vec2(0, 0), b, alpha, p); c = square(vec2(0, 0), b, alpha, p);
scene = abs(scene - c); scene = abs(scene - c);
c = square(vec2(0, 0), b, -alpha, p); c = square(vec2(0, 0), b, -alpha, p);
scene = abs(scene - c); scene = abs(scene - c);
} }
fragColor = vec4(vec3(1, 1, 1) * scene, 1); fragColor = vec4(vec3(1, 1, 1) * scene, 1);
} }

72
examples/square-in-square.frag
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@ -11,64 +11,64 @@ const float PI = 3.14159265358979323846;
mat2 rot(float a) { mat2 rot(float a) {
return mat2( return mat2(
cos(a), -sin(a), cos(a), -sin(a),
sin(a), cos(a) sin(a), cos(a)
); );
} }
float circle(vec2 m, float r, vec2 p) { float circle(vec2 m, float r, vec2 p) {
vec2 diff = m - p; vec2 diff = m - p;
float d = sqrt(dot(diff, diff)); float d = sqrt(dot(diff, diff));
return clamp((r - d)*sharpness, 0.0, 1.0); return clamp((r - d)*sharpness, 0.0, 1.0);
} }
float circle_d(vec2 m, float r, vec2 p) { float circle_d(vec2 m, float r, vec2 p) {
return circle(m, r, p) - circle(m, r - 1/sharpness, p); return circle(m, r, p) - circle(m, r - 1/sharpness, p);
} }
float square(vec2 m, float a, float r, vec2 p) { float square(vec2 m, float a, float r, vec2 p) {
vec2 diff = abs((m - p) * rot(r)); vec2 diff = abs((m - p) * rot(r));
float d = max(diff.x, diff.y); float d = max(diff.x, diff.y);
return clamp((a - d)*sharpness, 0.0, 1.0); return clamp((a - d)*sharpness, 0.0, 1.0);
} }
float square_d(vec2 m, float a, float r, vec2 p) { float square_d(vec2 m, float a, float r, vec2 p) {
return square(m, a, r, p) - square(m, a - 1/sharpness, r, p); return square(m, a, r, p) - square(m, a - 1/sharpness, r, p);
} }
void main(void) { void main(void) {
vec2 m = res/2; vec2 m = res/2;
float s = min(m.x, m.y); float s = min(m.x, m.y);
vec2 p = (gl_FragCoord.xy - m) / s; vec2 p = (gl_FragCoord.xy - m) / s;
float scene = 0; float scene = 0;
int n = 20; int n = 20;
float b = 1; float b = 1;
float alpha = 0; float alpha = 0;
for (int i = 0; i < n; i++) { for (int i = 0; i < n; i++) {
float delta = mod(time/5000, PI/2); float delta = mod(time/5000, PI/2);
alpha = mod(alpha + delta, PI/2); alpha = mod(alpha + delta, PI/2);
b /= (sin(delta) + cos(delta)); b /= (sin(delta) + cos(delta));
float c = square(vec2(0, 0), b, alpha, p); float c = square(vec2(0, 0), b, alpha, p);
scene = abs(scene - c); scene = abs(scene - c);
} }
b = 1; b = 1;
alpha = 0; alpha = 0;
for (int i = 0; i < n; i++) { for (int i = 0; i < n; i++) {
float delta = mod(-time/5000, PI/2); float delta = mod(-time/5000, PI/2);
alpha = mod(alpha + delta, PI/2); alpha = mod(alpha + delta, PI/2);
b /= (sin(delta) + cos(delta)); b /= (sin(delta) + cos(delta));
float c = square(vec2(0, 0), b, alpha, p); float c = square(vec2(0, 0), b, alpha, p);
scene = abs(scene - c); scene = abs(scene - c);
} }
fragColor = vec4(vec3(1, 1, 1) * scene, 1); fragColor = vec4(vec3(1, 1, 1) * scene, 1);
} }

34
examples/square-ring.frag
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@ -11,31 +11,31 @@ const float PI = 3.14159265358979323846;
mat2 rot(float a) { mat2 rot(float a) {
return mat2( return mat2(
cos(a), -sin(a), cos(a), -sin(a),
sin(a), cos(a) sin(a), cos(a)
); );
} }
float square(vec2 m, float a, float r, vec2 p) { float square(vec2 m, float a, float r, vec2 p) {
vec2 diff = abs((m - p) * rot(r)); vec2 diff = abs((m - p) * rot(r));
float d = max(diff.x, diff.y); float d = max(diff.x, diff.y);
return clamp((a - d)*sharpness, 0.0, 1.0); return clamp((a - d)*sharpness, 0.0, 1.0);
} }
void main(void) { void main(void) {
vec2 m = res/2; vec2 m = res/2;
float s = min(m.x, m.y); float s = min(m.x, m.y);
vec2 p = (gl_FragCoord.xy - m) / s; vec2 p = (gl_FragCoord.xy - m) / s;
float scene = 0; float scene = 0;
int n = 10; int n = 10;
for (int i = 1; i <= n; i++) { for (int i = 1; i <= n; i++) {
float c = square(vec2(0, 0), 0.5, PI/2*i/n - time/500, p); float c = square(vec2(0, 0), 0.5, PI/2*i/n - time/500, p);
scene = abs(scene - c); scene = abs(scene - c);
} }
fragColor = vec4(vec3(1, 1, 1) * scene, 1); fragColor = vec4(vec3(1, 1, 1) * scene, 1);
} }

44
examples/square-ring2.frag
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@ -11,37 +11,37 @@ const float PI = 3.14159265358979323846;
mat2 rot(float a) { mat2 rot(float a) {
return mat2( return mat2(
cos(a), -sin(a), cos(a), -sin(a),
sin(a), cos(a) sin(a), cos(a)
); );
} }
float square(vec2 m, float a, float r, vec2 p) { float square(vec2 m, float a, float r, vec2 p) {
vec2 diff = abs((m - p) * rot(r)); vec2 diff = abs((m - p) * rot(r));
float d = max(diff.x, diff.y); float d = max(diff.x, diff.y);
return clamp((a - d)*sharpness, 0.0, 1.0); return clamp((a - d)*sharpness, 0.0, 1.0);
} }
void main(void) { void main(void) {
vec2 m = res/2; vec2 m = res/2;
float s = min(m.x, m.y); float s = min(m.x, m.y);
vec2 p = (gl_FragCoord.xy - m) / s; vec2 p = (gl_FragCoord.xy - m) / s;
float scene = 0; float scene = 0;
int n = 5; int n = 5;
for (int i = 1; i <= n; i++) { for (int i = 1; i <= n; i++) {
float c = square(vec2(0, 0), 0.5, PI/2*i/n - time/3000, p); float c = square(vec2(0, 0), 0.5, PI/2*i/n - time/3000, p);
scene = abs(scene - c); scene = abs(scene - c);
} }
n = 5; n = 5;
for (int i = 1; i <= n; i++) { for (int i = 1; i <= n; i++) {
float c = square(vec2(0, 0), 0.5, PI/2*i/n + time/3000, p); float c = square(vec2(0, 0), 0.5, PI/2*i/n + time/3000, p);
scene = abs(scene - c); scene = abs(scene - c);
} }
fragColor = vec4(vec3(1, 1, 1) * scene, 1); fragColor = vec4(vec3(1, 1, 1) * scene, 1);
} }

38
examples/squares.frag
View file

@ -8,35 +8,35 @@ uniform float time;
const float sharpness = 500; const float sharpness = 500;
mat2 rot(float a) { mat2 rot(float a) {
return mat2( return mat2(
cos(a), -sin(a), cos(a), -sin(a),
sin(a), cos(a) sin(a), cos(a)
); );
} }
float square(vec2 m, float a, float r, vec2 p) { float square(vec2 m, float a, float r, vec2 p) {
vec2 diff = abs((m - p) * rot(r)); vec2 diff = abs((m - p) * rot(r));
float d = max(diff.x, diff.y); float d = max(diff.x, diff.y);
return clamp((a - d)*sharpness, 0.0, 1.0); return clamp((a - d)*sharpness, 0.0, 1.0);
} }
void main(void) { void main(void) {
vec2 m = res/2; vec2 m = res/2;
float s = min(m.x, m.y); float s = min(m.x, m.y);
vec2 p = (gl_FragCoord.xy - m) / s; vec2 p = (gl_FragCoord.xy - m) / s;
float a = atan(p.x, p.y); float a = atan(p.x, p.y);
float x = mod(p.x, 0.1); float x = mod(p.x, 0.1);
float y = mod(p.y, 0.1); float y = mod(p.y, 0.1);
float scene = 0; float scene = 0;
for (int i = 1; i <= 50; i++) { for (int i = 1; i <= 50; i++) {
float c = square(vec2(0.5, 0) * rot(time/500/i), 0.1 + 0.005*i, time/500/i + time/(100*i), p); float c = square(vec2(0.5, 0) * rot(time/500/i), 0.1 + 0.005*i, time/500/i + time/(100*i), p);
scene = abs(scene - c); scene = abs(scene - c);
} }
fragColor = vec4(vec3(1, 1, 1) * scene, 1); fragColor = vec4(vec3(1, 1, 1) * scene, 1);
} }

32
examples/supersnail.frag
View file

@ -8,30 +8,30 @@ uniform float time;
const float sharpness = 300; const float sharpness = 300;
mat2 rot(float a) { mat2 rot(float a) {
return mat2( return mat2(
cos(a), -sin(a), cos(a), -sin(a),
sin(a), cos(a) sin(a), cos(a)
); );
} }
float circle(vec2 m, float r, vec2 p) { float circle(vec2 m, float r, vec2 p) {
vec2 diff = m - p; vec2 diff = m - p;
float d = sqrt(dot(diff, diff)); float d = sqrt(dot(diff, diff));
return clamp((r - d)*sharpness, 0.0, 1.0); return clamp((r - d)*sharpness, 0.0, 1.0);
} }
void main(void) { void main(void) {
vec2 m = res/2; vec2 m = res/2;
float s = min(m.x, m.y); float s = min(m.x, m.y);
vec2 p = (gl_FragCoord.xy - m) / s; vec2 p = (gl_FragCoord.xy - m) / s;
float scene = 0; float scene = 0;
for (int i = 1; i <= 100; i++) { for (int i = 1; i <= 100; i++) {
float c = circle(vec2(0.5, 0) * rot(time/200/i), 0.1 + 0.002*i, p); float c = circle(vec2(0.5, 0) * rot(time/200/i), 0.1 + 0.002*i, p);
scene = abs(scene - c); scene = abs(scene - c);
} }
fragColor = vec4(vec3(1, 1, 1) * scene, 1); fragColor = vec4(vec3(1, 1, 1) * scene, 1);
} }

34
examples/symmetry.frag
View file

@ -11,31 +11,31 @@ const float PI = 3.14159265358979323846;
mat2 rot(float a) { mat2 rot(float a) {
return mat2( return mat2(
cos(a), -sin(a), cos(a), -sin(a),
sin(a), cos(a) sin(a), cos(a)
); );
} }
float square(vec2 m, float a, float r, vec2 p) { float square(vec2 m, float a, float r, vec2 p) {
vec2 diff = abs((m - p) * rot(r)); vec2 diff = abs((m - p) * rot(r));
float d = max(diff.x, diff.y); float d = max(diff.x, diff.y);
return clamp((a - d)*sharpness, 0.0, 1.0); return clamp((a - d)*sharpness, 0.0, 1.0);
} }
void main(void) { void main(void) {
vec2 m = res/2; vec2 m = res/2;
float s = min(m.x, m.y); float s = min(m.x, m.y);
vec2 p = (gl_FragCoord.xy - m) / s; vec2 p = (gl_FragCoord.xy - m) / s;
float scene = 0; float scene = 0;
int n = 24; int n = 24;
for (int i = 0; i < n; i++) { for (int i = 0; i < n; i++) {
float c = square(vec2(0.5, 0) * rot(PI/2*(4.0*i/n)) * vec2(1, 1), 0.3, PI/2*(24.0*i/n - time/800), p); float c = square(vec2(0.5, 0) * rot(PI/2*(4.0*i/n)) * vec2(1, 1), 0.3, PI/2*(24.0*i/n - time/800), p);
scene = abs(scene - c); scene = abs(scene - c);
} }
fragColor = vec4(vec3(1, 1, 1) * scene, 1); fragColor = vec4(vec3(1, 1, 1) * scene, 1);
} }

34
examples/torus.frag
View file

@ -11,31 +11,31 @@ const float PI = 3.14159265358979323846;
mat2 rot(float a) { mat2 rot(float a) {
return mat2( return mat2(
cos(a), -sin(a), cos(a), -sin(a),
sin(a), cos(a) sin(a), cos(a)
); );
} }
float square(vec2 m, float a, float r, vec2 p) { float square(vec2 m, float a, float r, vec2 p) {
vec2 diff = abs((m - p) * rot(r)); vec2 diff = abs((m - p) * rot(r));
float d = max(diff.x, diff.y); float d = max(diff.x, diff.y);
return clamp((a - d)*sharpness, 0.0, 1.0); return clamp((a - d)*sharpness, 0.0, 1.0);
} }
void main(void) { void main(void) {
vec2 m = res/2; vec2 m = res/2;
float s = min(m.x, m.y); float s = min(m.x, m.y);
vec2 p = (gl_FragCoord.xy - m) / s; vec2 p = (gl_FragCoord.xy - m) / s;
float scene = 0; float scene = 0;
int n = 48; int n = 48;
for (int i = 1; i <= n; i++) { for (int i = 1; i <= n; i++) {
float c = square(vec2(0.5, 0) * rot(PI/2*(time/8000 + 4.0*i/n)) * vec2(1, 0.5), 0.1, PI/2*(24.0*i/n - time/800), p); float c = square(vec2(0.5, 0) * rot(PI/2*(time/8000 + 4.0*i/n)) * vec2(1, 0.5), 0.1, PI/2*(24.0*i/n - time/800), p);
scene = abs(scene - c); scene = abs(scene - c);
} }
fragColor = vec4(vec3(1, 1, 1) * scene, 1); fragColor = vec4(vec3(1, 1, 1) * scene, 1);
} }