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Make shine rays pulsate

master
Fabien Freling 2018-11-04 18:14:21 +01:00
parent 0294800e6b
commit a12a8e6193
2 changed files with 12 additions and 14 deletions
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3
models/flag.glb.import
View File

@ -7,7 +7,10 @@ path="res://.import/flag.glb-0b6fa3c4b5180c1221a26057702dcf53.scn"
[deps]
source_file="res://models/flag.glb"
source_md5="6c4291e2219e6d5042a96bf9bb78d31e"
dest_files=[ "res://.import/flag.glb-0b6fa3c4b5180c1221a26057702dcf53.scn" ]
dest_md5="8e9acf5ce51013ce35e065b6c13566fd"
[params]

23
scenes/Goal.tscn
View File

@ -22,15 +22,8 @@ void vertex() {
float shine_ray(vec2 center_coords, float time, float offset, float speed) {
// atan() is in [-pi, pi[
float angle = atan(center_coords.x, center_coords.y) + offset;
if (angle > PI) {
angle -= 2.0 * PI;
}
if (angle < -PI) {
angle += 2.0 * PI;
}
float t = mod(-time * speed, 2.0 * PI) - PI; // [-pi, pi[
bool on_ray = abs(angle - t) < 0.05;
float angle = atan(center_coords.x, center_coords.y);
bool on_ray = abs(angle - offset) < 0.1;
if (!on_ray) {
return 0.0;
@ -38,7 +31,7 @@ float shine_ray(vec2 center_coords, float time, float offset, float speed) {
float max_dist = 0.5; // maximum orthogonal distance from center in a [0,1] rectangle
float center_dist = sqrt(pow(center_coords.x, 2) + pow(center_coords.y, 2)) / max_dist;
float intensity = 1.0;
float intensity = 1.0 + (sin(time * 3.0) / 3.0);
return clamp((1.0 - center_dist) * intensity, 0.0, 1.0);
}
@ -47,10 +40,12 @@ void fragment() {
vec2 center_coords = vec2(UV.x - 0.5, UV.y - 0.5);
ALPHA = clamp(
shine_ray(center_coords, TIME, 0.0, 0.3) +
shine_ray(center_coords, TIME, PI, 0.3) +
shine_ray(center_coords, TIME, 0.0, 0.5) +
shine_ray(center_coords, TIME, PI, 0.4),
shine_ray(center_coords, TIME, 0.5 * PI, 0.3) +
shine_ray(center_coords, TIME, (-1.0 + 0.5) * PI, 0.3) +
shine_ray(center_coords, TIME, 0.3 * PI, 0.5) +
shine_ray(center_coords, TIME, (-1.0 + 0.3) * PI, 0.4) +
shine_ray(center_coords, TIME, 0.8 * PI, 0.5) +
shine_ray(center_coords, TIME, (-1.0 + 0.8) * PI, 0.4),
0.0, 1.0);
}
"