Function RenderDebug

demo/main.cpp:1419–1544

}

void RenderDebug()
{
	if (g_mouseParticle != -1)
	{
		// draw mouse spring
		BeginLines();
		DrawLine(g_mousePos, Vec3(g_buffers->positions[g_mouseParticle]), Vec4(1.0f));
		EndLines();
	}

	// springs
	if (g_drawSprings)
	{
		Vec4 color;

		if (g_drawSprings == 1)
		{
			// stretch 
			color = Vec4(0.0f, 0.0f, 1.0f, 0.8f);
		}
		if (g_drawSprings == 2)
		{
			// tether
			color = Vec4(0.0f, 1.0f, 0.0f, 0.8f);
		}

		BeginLines();

		int start = 0;

		for (int i = start; i < g_buffers->springLengths.size(); ++i)
		{
			if (g_drawSprings == 1 && g_buffers->springStiffness[i] < 0.0f)
				continue;
			if (g_drawSprings == 2 && g_buffers->springStiffness[i] > 0.0f)
				continue;

			int a = g_buffers->springIndices[i * 2];
			int b = g_buffers->springIndices[i * 2 + 1];

			DrawLine(Vec3(g_buffers->positions[a]), Vec3(g_buffers->positions[b]), color);
		}

		EndLines();
	}

	// visualize contacts against the environment
	if (g_drawContacts)
	{
		const int maxContactsPerParticle = 6;

		NvFlexVector<Vec4> contactPlanes(g_flexLib, g_buffers->positions.size()*maxContactsPerParticle);
		NvFlexVector<Vec4> contactVelocities(g_flexLib, g_buffers->positions.size()*maxContactsPerParticle);
		NvFlexVector<int> contactIndices(g_flexLib, g_buffers->positions.size());
		NvFlexVector<unsigned int> contactCounts(g_flexLib, g_buffers->positions.size());

		NvFlexGetContacts(g_flex, contactPlanes.buffer, contactVelocities.buffer, contactIndices.buffer, contactCounts.buffer);