public void SetColor(ref Color color, int index)
{
//float velocity = VectorFuncts.Length(this.vecX[i], this.vecY[i]);
//byte alpha = (byte) TweenFuncts.Linear(velocity, 0, 4, 127, 255);
//var HLSColor = ColorFuncts.HSLToRGB(TweenFuncts.Linear(angle, (float) -Math.PI, (float) Math.PI, 0, 359), 60, 40, 255);
float angle = (float)Math.Atan2(this.vecX[index], this.vecY[index]);
if (angle > 0)
{
color.R = (byte)TweenFuncts.Linear(angle, 0, (float)Math.PI, 0, 255);
}
else
{
color.R = (byte)TweenFuncts.Linear(angle, (float)-Math.PI, 0, 255, 0);
}
color.G = 64;
color.B = 127;
color.A = 255;
}
public void Update(float deltaTime)
{
deltaTime *= 8;
/*for (int i = 0; i < this.gridSize; i++) {
* for (int j = 0; j < this.gridSize; j++) {
* float avgX = this.vfVecX[MathFuncts.Mod(i - 1, this.gridSize), MathFuncts.Mod(j - 1, this.gridSize)] + this.vfVecX[i, MathFuncts.Mod(j - 1, this.gridSize)] + this.vfVecX[MathFuncts.Mod(i + 1, this.gridSize), MathFuncts.Mod(j - 1, this.gridSize)] + this.vfVecX[MathFuncts.Mod(i - 1, this.gridSize), j] + this.vfVecX[i, j] + this.vfVecX[MathFuncts.Mod(i + 1, this.gridSize), j] + this.vfVecX[MathFuncts.Mod(i - 1, this.gridSize), MathFuncts.Mod(j + 1, this.gridSize)] + this.vfVecX[i, MathFuncts.Mod(j + 1, this.gridSize)] + this.vfVecX[MathFuncts.Mod(i + 1, this.gridSize), MathFuncts.Mod(j + 1, this.gridSize)];
* avgX /= 9f;
* float avgY = this.vfVecY[MathFuncts.Mod(i - 1, this.gridSize), MathFuncts.Mod(j - 1, this.gridSize)] + this.vfVecY[i, MathFuncts.Mod(j - 1, this.gridSize)] + this.vfVecY[MathFuncts.Mod(i + 1, this.gridSize), MathFuncts.Mod(j - 1, this.gridSize)] + this.vfVecY[MathFuncts.Mod(i - 1, this.gridSize), j] + this.vfVecX[i, j] + this.vfVecY[MathFuncts.Mod(i + 1, this.gridSize), j] + this.vfVecY[MathFuncts.Mod(i - 1, this.gridSize), MathFuncts.Mod(j + 1, this.gridSize)] + this.vfVecY[i, MathFuncts.Mod(j + 1, this.gridSize)] + this.vfVecY[MathFuncts.Mod(i + 1, this.gridSize), MathFuncts.Mod(j + 1, this.gridSize)];
* avgY /= 9f;
*
* this.vfVecX[i, j] = avgX;
* this.vfVecY[i, j] = avgY;
* }
* }*/
Parallel.For((long)0, this.pointSize, index => {
int gridWidthIndex = (int)Math.Clamp(Math.Floor((this.gridSize - 1) / (float)this.width * this.posX[index]), 0, this.gridSize - 1);
int gridHeightIndex = (int)Math.Clamp(Math.Floor((this.gridSize - 1) / (float)this.height * this.posY[index]), 0, this.gridSize - 1);
this.vecX[index] += this.vfVecX[gridWidthIndex, gridHeightIndex] * this.vfFriction * 1f;
this.vecY[index] += this.vfVecY[gridWidthIndex, gridHeightIndex] * this.vfFriction * 1f;
this.vfVecX[gridWidthIndex, gridHeightIndex] += this.vecX[index] * this.pointFriction * deltaTime;
this.vfVecY[gridWidthIndex, gridHeightIndex] += this.vecY[index] * this.pointFriction * deltaTime;
if (RandomFuncts.GetRandomDouble(0, 1) < this.vfRandomReset)
{
this.ResetVectorField(gridWidthIndex, gridHeightIndex);
}
else
{
if (VectorFuncts.Length(this.vfVecX[gridWidthIndex, gridHeightIndex], this.vfVecY[gridWidthIndex, gridHeightIndex]) > this.vfMaxSpeed)
{
TweenFuncts.ExponentialSmoothing(ref this.vfVecX[gridWidthIndex, gridHeightIndex], this.vfSmoothingScalar);
TweenFuncts.ExponentialSmoothing(ref this.vfVecY[gridWidthIndex, gridHeightIndex], this.vfSmoothingScalar);
}
}
if (RandomFuncts.GetRandomDouble(0, 1) < this.pointRandomReset)
{
this.ResetPoint((int)index);
}
else
{
this.posX[index] += this.vecX[index] * deltaTime;
this.posY[index] += this.vecY[index] * deltaTime;
if (VectorFuncts.Length(this.vecX[index], this.vecY[index]) > this.pointMaxSpeed)
{
TweenFuncts.ExponentialSmoothing(ref this.vecX[index], this.pointSmoothingScalar);
TweenFuncts.ExponentialSmoothing(ref this.vecY[index], this.pointSmoothingScalar);
}
}
this.WrapAroundWindow((int)index);
this.SetVertex((int)index);
});
/*for (int i = 0; i < this.pointSize; i++) {
* int gridWidthIndex = (int) Math.Clamp(Math.Floor((this.gridSize - 1) / (float) this.width * this.posX[i]), 0, this.gridSize - 1);
* int gridHeightIndex = (int) Math.Clamp(Math.Floor((this.gridSize - 1) / (float) this.height * this.posY[i]), 0, this.gridSize - 1);
*
* this.vecX[i] += this.vfVecX[gridWidthIndex, gridHeightIndex] * this.vfFriction * 1f;
* this.vecY[i] += this.vfVecY[gridWidthIndex, gridHeightIndex] * this.vfFriction * 1f;
* this.vfVecX[gridWidthIndex, gridHeightIndex] += this.vecX[i] * this.pointFriction * deltaTime;
* this.vfVecY[gridWidthIndex, gridHeightIndex] += this.vecY[i] * this.pointFriction * deltaTime;
*
* if (RandomFuncts.GetRandomDouble(0, 1) < this.vfRandomReset) {
* this.ResetVectorField(gridWidthIndex, gridHeightIndex);
* }
* else {
* if (VectorFuncts.Length(this.vfVecX[gridWidthIndex, gridHeightIndex], this.vfVecY[gridWidthIndex, gridHeightIndex]) > this.vfMaxSpeed) {
* TweenFuncts.ExponentialSmoothing(ref this.vfVecX[gridWidthIndex, gridHeightIndex], this.vfSmoothingScalar);
* TweenFuncts.ExponentialSmoothing(ref this.vfVecY[gridWidthIndex, gridHeightIndex], this.vfSmoothingScalar);
* }
* }
*
* if (RandomFuncts.GetRandomDouble(0, 1) < this.pointRandomReset) {
* this.ResetPoint(i);
* }
* else {
* this.posX[i] += this.vecX[i] * deltaTime;
* this.posY[i] += this.vecY[i] * deltaTime;
*
* if (VectorFuncts.Length(this.vecX[i], this.vecY[i]) > this.pointMaxSpeed) {
* TweenFuncts.ExponentialSmoothing(ref this.vecX[i], this.pointSmoothingScalar);
* TweenFuncts.ExponentialSmoothing(ref this.vecY[i], this.pointSmoothingScalar);
* }
* }
*
* this.WrapAroundWindow(i);
* this.SetVertex(i);
* }*/
}
