more tests

examples/testbed/tests/hull_contact_test.h

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+/*
+* Copyright (c) 2016-2016 Irlan Robson http://www.irlan.net
+*
+* This software is provided 'as-is', without any express or implied
+* warranty.  In no event will the authors be held liable for any damages
+* arising from the use of this software.
+* Permission is granted to anyone to use this software for any purpose,
+* including commercial applications, and to alter it and redistribute it
+* freely, subject to the following restrictions:
+* 1. The origin of this software must not be misrepresented; you must not
+* claim that you wrote the original software. If you use this software
+* in a product, an acknowledgment in the product documentation would be
+* appreciated but is not required.
+* 2. Altered source versions must be plainly marked as such, and must not be
+* misrepresented as being the original software.
+* 3. This notice may not be removed or altered from any source distribution.
+*/
+
+#ifndef HULL_CONTACT_TEST_H
+#define HULL_CONTACT_TEST_H
+
+class HullContactTest : public Test
+{
+public:
+	HullContactTest()
+	{
+		{
+			b3BodyDef bdef;
+			bdef.type = b3BodyType::e_staticBody;
+
+			b3Body* body = m_world.CreateBody(bdef);
+
+			b3HullShape hs;
+			hs.m_hull = &m_groundHull;
+
+			b3ShapeDef sdef;
+			sdef.shape = &hs;
+			sdef.friction = 1.0f;
+
+			body->CreateShape(sdef);
+		}
+
+		static b3QHull hulls[2];
+		
+		for (u32 i = 0; i < 2; ++i)
+		{
+			b3QHull* hull = hulls + i;
+
+			const u32 count = B3_MAX_HULL_VERTICES / 4;
+			b3Vec3 points[count];
+
+			for (u32 j = 0; j < count; ++j)
+			{
+				// Clamp to force coplanarities.
+				// This will stress the generation code.
+				float32 x = 3.0f * RandomFloat(-1.0f, 1.0f);
+				float32 y = 3.0f * RandomFloat(-1.0f, 1.0f);
+				float32 z = 3.0f * RandomFloat(-1.0f, 1.0f);
+
+				x = b3Clamp(x, -1.5f, 1.5f);
+				y = b3Clamp(y, -1.5f, 1.5f);
+				z = b3Clamp(z, -1.5f, 1.5f);
+
+				b3Vec3 p(x, y, z);
+
+				points[j] = p;
+			}
+
+			hull->Set(points, count);
+		}
+
+		{
+			b3BodyDef bdef;
+			bdef.type = b3BodyType::e_dynamicBody;
+			bdef.position.Set(0.0f, 5.0f, 0.0f);
+
+			b3Body* body = m_world.CreateBody(bdef);
+
+			b3HullShape hs;
+			hs.m_hull = hulls + 0;
+
+			b3ShapeDef sdef;
+			sdef.density = 0.1f;
+			sdef.friction = 0.1f;
+			sdef.shape = &hs;
+
+			body->CreateShape(sdef);
+		}
+		
+		{
+			b3BodyDef bdef;
+			bdef.type = b3BodyType::e_dynamicBody;
+			bdef.position.Set(0.0f, 10.0f, 0.0f);
+
+			b3Body* body = m_world.CreateBody(bdef);
+
+			b3HullShape hs;
+			hs.m_hull = hulls + 1;
+
+			b3ShapeDef sdef;
+			sdef.density = 0.1f;
+			sdef.friction = 0.1f;
+			sdef.shape = &hs;
+
+			body->CreateShape(sdef);
+		}
+	}
+
+	static Test* Create()
+	{
+		return new HullContactTest();
+	}
+};
+
+#endif