public void addForce(float x, float y, float dx, float dy, colorP5 drawColor, int particleNum, float colorMult, float randomRange)
{
float speed = dx * dx + dy * dy * aspectRatio2; // balance the x and y components of speed with the screen aspect ratio
if (speed > 0)
{
if (x < 0)
{
x = 0;
}
else if (x > 1)
{
x = 1;
}
if (y < 0)
{
y = 0;
}
else if (y > 1)
{
y = 1;
}
//float colorMult = 5;
float velocityMult = 30.0f;
int index = fluidSolver.getIndexForNormalizedPosition(x, y);
if (particleNum > 0)
{
fluidSolver.rOld [index] += red(drawColor) * colorMult;
fluidSolver.gOld [index] += green(drawColor) * colorMult;
fluidSolver.bOld [index] += blue(drawColor) * colorMult;
p5particleSystem.addParticles(x * width, y * height, particleNum, drawColor.m_color, randomRange);
}
fluidSolver.uOld [index] += dx * velocityMult;
fluidSolver.vOld [index] += dy * velocityMult;
}
}
//public float angle = 0.0f;
//public Vector3 renderV;
public void update()
{
updateAppearAnime();
alpha = t_alpha * _alpha_per;
// only update if particle is visible
if (alpha == 0)
{
return;
}
// spark
if (isSpark)
{
//alpha *= (Mathf.Sin(randomV + Time.realtimeSinceStartup * (20.0f * 1.0f/mass)) + 1.0f) / 2.0f + 0.4f;
//alpha *= (Mathf.Sin((randomV + Time.realtimeSinceStartup) * 20.0f * (mass * mass)) + 1.0f) / 2.0f + 0.4f;
alpha *= (Mathf.Sin((randomV + Time.realtimeSinceStartup) * 10.0f * 1.0f / (mass * mass)) + 1.0f) / 2.0f + 0.4f;
}
if (fluidSolver == null)
{
return;
}
// read fluid info and add to velocity
int fluidIndex = fluidSolver.getIndexForNormalizedPosition(x * MSAFluid.invWidth, y * MSAFluid.invHeight);
/*
* vx = fluidSolver.u[fluidIndex] * height * mass * FLUID_FORCE + vx * MOMENTUM;
* vy = fluidSolver.v[fluidIndex] * height * mass * FLUID_FORCE + vy * MOMENTUM;
*/
float t_vx = fluidSolver.u [fluidIndex] * height * mass * FLUID_FORCE + vx * MOMENTUM;
float t_vy = fluidSolver.v [fluidIndex] * height * mass * FLUID_FORCE + vy * MOMENTUM;
//vx += (t_vx - vx)*V_SMOOTH;
//vy += (t_vy - vy)*V_SMOOTH;
vx = t_vx;
vy = t_vy;
vMagnitude = (new Vector3(vx, vy, 0)).magnitude;
/*
* Vector3 v = new Vector3(vx, vy, 0);
* float tt_angle = Vector3.Angle(new Vector3(1,0,0), v);
* angle += (tt_angle - angle)*0.025f;
* renderV = new Vector3(Mathf.Cos(angle * Mathf.Deg2Rad), Mathf.Sin(angle * Mathf.Deg2Rad), 0)*vMagnitude;
*/
//if(Mathf.Abs(vx) < 0.075f && Mathf.Abs(vy) < 0.075f){
if (vMagnitude < P5ParticleSystemRenderer.MIN_MAGNITUDE)
{
/*
* // この処理は無くしたほうがいい？
* // TODO: あったほうがいいけれど、タイトルのとき消えてしまうので処理を再考する
* if(!isAppearAnime){
* _alpha_per *= alphaDelta;
* if(_alpha_per < 0.05f) _alpha_per = 0;
* }
*/
//vx = 0;
//vy = 0;
return;
}
/*
* vx += ((fluidSolver.u[fluidIndex] * height * mass * FLUID_FORCE + vx * MOMENTUM) - vx) * 0.1f;
* vy += ((fluidSolver.v[fluidIndex] * height * mass * FLUID_FORCE + vy * MOMENTUM) - vy) * 0.1f;
*/
// update position
x += vx;
y += vy;
/*
* // bounce of edges
* if(x<0-boundaryOffset) {
* x = 0-boundaryOffset;
* vx *= -1;
* }
* else if(x > width+boundaryOffset) {
* x = width+boundaryOffset;
* vx *= -1;
* }
*
* if(y<0-boundaryOffset) {
* y = 0-boundaryOffset;
* vy *= -1;
* }
* else if(y > height+boundaryOffset) {
* y = height+boundaryOffset;
* vy *= -1;
* }
*/
/*
* // hackish way to make particles glitter when the slow down a lot
* if(vx * vx + vy * vy < 0.001f) {
* vx = Random.Range(-1, 1) * 0.0025f;
* vy = Random.Range(-1, 1) * 0.0025f;
* }
*/
// fade out a bit (and kill if alpha == 0);
if (!isStay)
{
if (x < 0 - boundaryOffset)
{
//x = width+boundaryOffset;
//vx *= 0.5f;
_alpha_per = 0;
}
else if (x > width + boundaryOffset)
{
//x = 0-boundaryOffset;
//vx *= 0.5f;
_alpha_per = 0;
}
if (y < 0 - boundaryOffset)
{
//y = height+boundaryOffset;
//vy *= 0.5f;
_alpha_per = 0;
}
else if (y > height + boundaryOffset)
{
//y = 0-boundaryOffset;
//vy *= 0.5f;
_alpha_per = 0;
}
if (!isAppearAnime)
{
_alpha_per *= alphaDelta;
if (_alpha_per < 0.05f)
{
_alpha_per = 0;
}
}
}
else
{
// stay
if (x < 0 - boundaryOffset || x > width + boundaryOffset)
{
reset();
}
if (y < 0 - boundaryOffset || y > height + boundaryOffset)
{
reset();
}
if (!isAppearAnime)
{
_alpha_per *= 0.99f + 0.009f * randomValue;
if (_alpha_per < 0.05f)
{
reset();
}
}
}
}
