* Adjustment: Update Bullet version to 3.24.

2026-03-28 16:49:43 +00:00 · 2022-06-27 10:01:08 -04:00 · 2022-06-27 10:01:08 -04:00 · 4a3f31df2a
commit 4a3f31df2a
parent 35de012ee7
6148 changed files with 2112532 additions and 56873 deletions
--- a/Engine/lib/bullet/examples/RenderingExamples/RenderInstancingDemo.cpp
+++ b/Engine/lib/bullet/examples/RenderingExamples/RenderInstancingDemo.cpp
@ -0,0 +1,139 @@
+#ifndef RENDER_INSTANCING_DEMO_H
+#define RENDER_INSTANCING_DEMO_H
+
+#include "../CommonInterfaces/CommonGraphicsAppInterface.h"
+#include "Bullet3Common/b3Quaternion.h"
+#include "Bullet3Common/b3AlignedObjectArray.h"
+#include "../CommonInterfaces/CommonRenderInterface.h"
+#include "../CommonInterfaces/CommonExampleInterface.h"
+#include "../CommonInterfaces/CommonGUIHelperInterface.h"
+
+///quick demo showing the right-handed coordinate system and positive rotations around each axis
+class RenderInstancingDemo : public CommonExampleInterface
+{
+	CommonGraphicsApp* m_app;
+	float m_x;
+	float m_y;
+	float m_z;
+	b3AlignedObjectArray<int> m_movingInstances;
+	enum
+	{
+		numCubesX = 20,
+		numCubesY = 20
+	};
+
+public:
+	RenderInstancingDemo(CommonGraphicsApp* app)
+		: m_app(app),
+		  m_x(0),
+		  m_y(0),
+		  m_z(0)
+	{
+		m_app->setUpAxis(2);
+
+		{
+			b3Vector3 extents = b3MakeVector3(100, 100, 100);
+			extents[m_app->getUpAxis()] = 1;
+
+			int xres = 20;
+			int yres = 20;
+
+			b3Vector4 color0 = b3MakeVector4(0.1, 0.1, 0.1, 1);
+			b3Vector4 color1 = b3MakeVector4(0.6, 0.6, 0.6, 1);
+			m_app->registerGrid(xres, yres, color0, color1);
+		}
+
+		{
+			int boxId = m_app->registerCubeShape(0.1, 0.1, 0.1);
+
+			for (int i = -numCubesX / 2; i < numCubesX / 2; i++)
+			{
+				for (int j = -numCubesY / 2; j < numCubesY / 2; j++)
+				{
+					b3Vector3 pos = b3MakeVector3(i, j, j);
+					pos[app->getUpAxis()] = 1;
+					b3Quaternion orn(0, 0, 0, 1);
+					b3Vector4 color = b3MakeVector4(0.3, 0.3, 0.3, 1);
+					b3Vector3 scaling = b3MakeVector3(1, 1, 1);
+					int instanceId = m_app->m_renderer->registerGraphicsInstance(boxId, pos, orn, color, scaling);
+					m_movingInstances.push_back(instanceId);
+				}
+			}
+		}
+
+		m_app->m_renderer->writeTransforms();
+	}
+	virtual ~RenderInstancingDemo()
+	{
+	}
+
+	virtual void physicsDebugDraw(int debugDrawMode)
+	{
+	}
+	virtual void initPhysics()
+	{
+	}
+	virtual void exitPhysics()
+	{
+	}
+	virtual void stepSimulation(float deltaTime)
+	{
+		m_x += 0.01f;
+		m_y += 0.01f;
+		m_z += 0.01f;
+		int index = 0;
+		for (int i = -numCubesX / 2; i < numCubesX / 2; i++)
+		{
+			for (int j = -numCubesY / 2; j < numCubesY / 2; j++)
+			{
+				b3Vector3 pos = b3MakeVector3(i, j, j);
+				pos[m_app->getUpAxis()] = 1 + 1 * b3Sin(m_x + i - j);
+				float orn[4] = {0, 0, 0, 1};
+				m_app->m_renderer->writeSingleInstanceTransformToCPU(pos, orn, m_movingInstances[index++]);
+			}
+		}
+		m_app->m_renderer->writeTransforms();
+	}
+	virtual void renderScene()
+	{
+		m_app->m_renderer->renderScene();
+	}
+
+	virtual void physicsDebugDraw()
+	{
+	}
+	virtual bool mouseMoveCallback(float x, float y)
+	{
+		return false;
+	}
+	virtual bool mouseButtonCallback(int button, int state, float x, float y)
+	{
+		return false;
+	}
+	virtual bool keyboardCallback(int key, int state)
+	{
+		return false;
+	}
+
+	virtual void resetCamera()
+	{
+		float dist = 13;
+		float pitch = -13;
+		float yaw = 50;
+		float targetPos[3] = {-1, 0, -0.3};
+		if (m_app->m_renderer && m_app->m_renderer->getActiveCamera())
+		{
+			m_app->m_renderer->getActiveCamera()->setCameraDistance(dist);
+			m_app->m_renderer->getActiveCamera()->setCameraPitch(pitch);
+			m_app->m_renderer->getActiveCamera()->setCameraYaw(yaw);
+			m_app->m_renderer->getActiveCamera()->setCameraTargetPosition(targetPos[0], targetPos[1], targetPos[2]);
+		}
+	}
+};
+
+class CommonExampleInterface* RenderInstancingCreateFunc(struct CommonExampleOptions& options)
+{
+	return new RenderInstancingDemo(options.m_guiHelper->getAppInterface());
+}
+
+#endif  //RENDER_INSTANCING_DEMO_H