public void Init(OpenGL gl)
{
// Init location source
_emitterLocation.Init(0.0f, -15.0f, 0.0f, 30.0f, 30.0f, 0.0f, 0.6f, 0.6f, 0.0f);
// Init colors
setColors();
_colorRotateStopwatch.Start();
float adjustedThickness = BandThickness * 100.0f;
// Particle system init
_particleSystem.AfterParticleInit = ((particle, audioModifier) =>
{
// Which spectrum bar this particle belongs to
int bandIndex = particle.ParticleId % BandCount;
// The x offset of this particle
float offsetX = bandIndex * (BandThickness + BandSpacing);
offsetX = 0.0f;
int color = _colorIndices[0];
// Color
particle.R = Constants.Colors[color, 0];
particle.G = Constants.Colors[color, 1];
particle.B = Constants.Colors[color, 2];
// Start location
particle.X = offsetX + _emitterLocation.X + ((_random.Next((int)(adjustedThickness * 2.0f)) - adjustedThickness) / adjustedThickness);
particle.Y = _emitterLocation.Y + ((_random.Next(200) - 0.0f) / 600.0f);
particle.Z = (_random.Next(200) - 100.0f) / 400.0f;
particle.DieRate = ((_random.Next(100)) + 100.0f) / 4000.0f;
particle.Size = 0.4f + (audioModifier * 0.2f);
particle.Chaos = (_random.Next(200) - 100.0f) * ParticleChaos;
particle.Drag = 0.0f;
particle.Attribute1 = NoiseIntensity + (audioModifier * 0.4f);
particle.Lift = ((_random.Next(200) + 100.0f) / 800.0f) + FixedVelocityModifier + (audioModifier * 0.2f);
//particle.Lift = (particle.ParticleId % 2 == 0 ? 1.0f : -1.0f) * (FixedVelocityModifier + (audioModifier * 0.2f));
// Speed
particle.Xi = 0.0f;
particle.Yi = 0.0f;
particle.Zi = 0.0f;
});
_particleSystem.OverrideParticleUpdate = ((particle, audioModifier) =>
{
if (particle.ParticleId < 0)
{
// Put particle in its place
vec2 potentialFieldLocation = _potentialFieldLocations[particle.ParticleId];
particle.X = potentialFieldLocation.x;
particle.Y = potentialFieldLocation.y;
particle.Z = 0.0f;
// Get noise at location
float noiseValue = _perlinNoise.Noise(particle.X * NoiseSampleScale, particle.Y * NoiseSampleScale, _time) * NoiseIntensity;
particle.Size = noiseValue;
particle.R = noiseValue;
particle.G = noiseValue;
particle.B = noiseValue;
}
else
{
// Which spectrum bar this particle belongs to
int bandIndex = particle.ParticleId % BandCount;
//particle.Size = 0.2f + (_scaledAudioData[bandIndex] * 2.0f);
vec3 curl1 = _perlinNoise.ComputeCurl(particle.X * NoiseSampleScale, particle.Y * NoiseSampleScale, _time, CurlEpsilon, particle.Attribute1);
particle.Xi = (curl1.x * particle.Chaos);
particle.Yi = (curl1.y * particle.Chaos);
particle.Zi = 0.0f;
particle.Yi += particle.Lift;
// Move by speed
particle.X += particle.Xi;
particle.Y += particle.Yi;
particle.Z += particle.Zi;
// Reduce life (opacity)
particle.Life -= particle.DieRate;
}
});
_particleSystem.Init(gl, OpenGL.GL_SRC_ALPHA, ParticleCount, true, false);
}