// Update is called once per frame
void Update()
{
if (Input.GetKeyUp(KeyCode.Space))
{
Vector3[] particles = new Vector3[amount];
for (int i = 0; i < particles.Length; i++)
{
particles[i] = 5 * new Vector3(Random.value, Random.value, Random.value);
}
Color[] colors = new Color[amount];
for (int i = 0; i < colors.Length; i++)
{
colors[i] = Random.ColorHSV();
}
Vector3[] scales = new Vector3[amount];
Vector3 baseSize = 0.01f * Vector3.one;
for (int i = 0; i < particles.Length; i++)
{
scales[i] = 0.05f * (new Vector3(Random.value, Random.value, Random.value)) + baseSize;
}
manager.AddPoints(particles, scales: scales, colors: colors);
}
if (Input.GetKeyUp(KeyCode.Delete))
{
manager.Clear();
}
}
void GenerateGpuParticles(int num_particles)
{
Debug.Log("Generating GPU Particles: " + num_particles);
Vector3[] positions = new Vector3[num_particles];
//Vector3[] scales = new Vector3[num_particles];
Color[] colors = new Color[num_particles];
Vector3 center_offset = new Vector3(cumulative_row_densities.Length * 0.5f, 0, marginal_cumulative_col.GetLength(1) * 0.5f);
float tileRadiusBase = center_offset.magnitude;
float tileRadiusSqr1 = (center_offset * 0.25f).sqrMagnitude;
float tileRadiusSqr2 = (center_offset * 2).sqrMagnitude;
cellSize = 3.0f / tileRadiusBase;
float fudgeFactor1 = tileRadiusBase / 15;
float fudgeFactor2 = tileRadiusBase / 75;
for (int i = 0; i < num_particles; i++)
{
float rand1 = Random.value, rand2 = Random.value;
int row;
for (row = 1; row < cumulative_row_densities.Length; row++)
{
if (cumulative_row_densities[row] > rand1)
{
break;
}
}
row -= 1;
int col, width = marginal_cumulative_col.GetLength(1);
for (col = 1; col < width; col++)
{
if (marginal_cumulative_col[row, col] > rand2)
{
break;
}
}
col -= 1;
Vector3 unit_position = new Vector3(row + Random.value, 0, col + Random.value);
float y_range_1 = Mathf.Exp(-(unit_position - center_offset).sqrMagnitude / tileRadiusSqr1) * fudgeFactor1;
float y_range_2 = Mathf.Exp(-(unit_position - center_offset).sqrMagnitude / tileRadiusSqr2) * fudgeFactor2;
positions[i] = cellSize * (new Vector3(unit_position.x, sampleGaussian(0, Mathf.Max(y_range_1, y_range_2)), unit_position.z) - center_offset);
float hue_mean = h_mean[row, col];
float hue_std = h_std[row, col];
float hue_sample = sampleGaussian(hue_mean, hue_std);
float sat_mean = s_mean[row, col];
float sat_std = s_std[row, col];
float sat_sample = sampleGaussian(sat_mean, sat_std);
float value_mean = v_mean[row, col];
float value_std = v_std[row, col];
float value_sample = sampleGaussian(value_mean, value_std);
colors[i] = Color.HSVToRGB(hue_sample, sat_sample, value_sample);
//colors[i] = Color.white;
//scales[i] = 0.01f * Vector3.one;
}
gpu_particles_manager.AddPoints(positions, colors: colors);
}