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class GranularPile : public Scene
{
public:
GranularPile(const char* name) : Scene(name) {}
virtual void Initialize()
{
// granular pile
float radius = 0.075f;
Vec3 lower(8.0f, 4.0f, 2.0f);
CreateParticleShape(GetFilePathByPlatform("../../data/sphere.ply").c_str(), lower, 1.0f, 0.0f, radius, 0.0f, 0.f, true, 1.0f, NvFlexMakePhase(1, 0), true, 0.00f);
g_numSolidParticles = g_buffers->positions.size();
CreateParticleShape(GetFilePathByPlatform("../../data/sandcastle.obj").c_str(), Vec3(-2.0f, -radius*0.15f, 0.0f), 4.0f, 0.0f, radius*1.0001f, 0.0f, 1.0f, false, 0.0f, NvFlexMakePhase(0, eNvFlexPhaseSelfCollide), false, 0.00f);
g_numSubsteps = 2;
g_params.radius = radius;
g_params.staticFriction = 1.0f;
g_params.dynamicFriction = 0.5f;
g_params.viscosity = 0.0f;
g_params.numIterations = 12;
g_params.particleCollisionMargin = g_params.radius*0.25f; // 5% collision margin
g_params.sleepThreshold = g_params.radius*0.25f;
g_params.shockPropagation = 6.f;
g_params.restitution = 0.2f;
g_params.relaxationFactor = 1.f;
g_params.damping = 0.14f;
g_params.numPlanes = 1;
// draw options
g_drawPoints = true;
g_warmup = false;
// hack, change the color of phase 0 particles to 'sand'
g_colors[0] = Colour(0.805f, 0.702f, 0.401f);
}
void Update()
{
// launch ball after 3 seconds
if (g_frame == 180)
{
for (int i=0; i < g_numSolidParticles; ++i)
{
g_buffers->positions[i].w = 0.9f;
g_buffers->velocities[i] = Vec3(-15.0f, 0.0f, 0.0f);
}
}
}
};
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