@Override
public void create() {
Arrays.fill(heights, defaultHeight);
Core.interval(.0005).onEvent(this::step).addChild(this);
// onUpdate(dt -> {
// Util.repeat(detail, i -> heights[i] += dt * speeds[i]);
// Util.repeat(detail - 1, i -> {
// deltas[i] = heights[i + 1] - heights[i];
// speeds[i] += deltas[i] * dt * 3000;
// speeds[i + 1] -= deltas[i] * dt * 3000;
// });
// Util.repeat(detail, i -> speeds[i] = speeds[i] * Math.pow(.1, dt * dt) + dt * 10 *
// (defaultHeight - heights[i]));
// Util.repeat(detail - 1, i -> {
// heights[i] += deltas[i] * dt;
// heights[i + 1] -= deltas[i] * dt;
// });
// });
onRender(
() -> {
glDisable(GL_TEXTURE_2D);
glBegin(GL_TRIANGLE_STRIP);
Util.repeat(
detail,
i -> {
double x = position.x + width * (2. * i / detail - 1);
new Color4(0, 0, .6).glColor();
new Vec2(x, bottom).glVertex();
new Color4(0, .2, 1).glColor();
new Vec2(x, heights[i]).glVertex();
});
glEnd();
});
Core.renderLayer(1)
.onEvent(
() -> {
glDisable(GL_TEXTURE_2D);
glBegin(GL_TRIANGLE_STRIP);
Util.repeat(
detail,
i -> {
double x = position.x + width * (2. * i / detail - 1);
new Color4(0, 0, .6, .5).glColor();
new Vec2(x, bottom).glVertex();
new Color4(0, .2, 1, .5).glColor();
new Vec2(x, heights[i]).glVertex();
});
glEnd();
})
.addChild(this);
}
@Override
public void createInner() {
List<Particle> particles = new LinkedList();
for (int i = 0; i < 2500; i++) {
particles.add(
new Particle(Window3D.pos.add(Vec3.randomSquare(MAX_DIST)), Math.random() * .04 + .06));
}
onUpdate(
dt -> {
Iterator<Particle> it = particles.iterator();
while (it.hasNext()) {
Particle p = it.next();
p.pos = p.pos.add(Vec3.randomSquare(dt / 5).add(new Vec3(0, 0, -dt)));
p.pos =
Window3D.pos.add(
p.pos
.subtract(Window3D.pos)
.perComponent(d -> (d + 3 * MAX_DIST) % (2 * MAX_DIST) - MAX_DIST));
}
});
Sprite s = new Sprite("snowflake2");
Core.renderLayer(.2)
.onEvent(
() -> {
glEnable(GL_TEXTURE_2D);
s.getTexture().bind();
WHITE.glColor();
glBegin(GL_QUADS);
particles.forEach(
p -> {
if (CubeMap.rayCastStream(p.pos, new Vec3(0, 0, 1))
.anyMatch(cd -> cd.c != null)) {
return;
}
;
Vec3 towards = p.pos.subtract(Window3D.pos);
Vec3 side = towards.cross(Window3D.UP).withLength(p.size / 2);
Vec3 snowUp = towards.cross(side).withLength(p.size / 2);
Graphics3D.drawQuadFastT(
p.pos.add(side).add(snowUp),
p.pos.subtract(side).add(snowUp),
p.pos.subtract(side).subtract(snowUp),
p.pos.add(side).subtract(snowUp));
});
glEnd();
})
.addChild(this);
}