void AnimatingScene::CreateScene()
{
ResourceCache* cache = GetSubsystem<ResourceCache>();
scene_ = new Scene(context_);
// Create the Octree component to the scene so that drawable objects can be rendered. Use default volume
// (-1000, -1000, -1000) to (1000, 1000, 1000)
scene_->CreateComponent<Octree>();
// Create a Zone component into a child scene node. The Zone controls ambient lighting and fog settings. Like the Octree,
// it also defines its volume with a bounding box, but can be rotated (so it does not need to be aligned to the world X, Y
// and Z axes.) Drawable objects "pick up" the zone they belong to and use it when rendering; several zones can exist
Node* zoneNode = scene_->CreateChild("Zone");
Zone* zone = zoneNode->CreateComponent<Zone>();
// Set same volume as the Octree, set a close bluish fog and some ambient light
zone->SetBoundingBox(BoundingBox(-1000.0f, 1000.0f));
zone->SetAmbientColor(Color(0.05f, 0.1f, 0.15f));
zone->SetFogColor(Color(0.1f, 0.2f, 0.3f));
zone->SetFogStart(10.0f);
zone->SetFogEnd(100.0f);
// Create randomly positioned and oriented box StaticModels in the scene
const unsigned NUM_OBJECTS = 2000;
for (unsigned i = 0; i < NUM_OBJECTS; ++i)
{
Node* boxNode = scene_->CreateChild("Box");
boxNode->SetPosition(Vector3(Random(200.0f) - 100.0f, Random(200.0f) - 100.0f, Random(200.0f) - 100.0f));
// Orient using random pitch, yaw and roll Euler angles
boxNode->SetRotation(Quaternion(Random(360.0f), Random(360.0f), Random(360.0f)));
StaticModel* boxObject = boxNode->CreateComponent<StaticModel>();
boxObject->SetModel(cache->GetResource<Model>("Models/Box.mdl"));
boxObject->SetMaterial(cache->GetResource<Material>("Materials/Stone.xml"));
// Add our custom Rotator component which will rotate the scene node each frame, when the scene sends its update event.
// The Rotator component derives from the base class LogicComponent, which has convenience functionality to subscribe
// to the various update events, and forward them to virtual functions that can be implemented by subclasses. This way
// writing logic/update components in C++ becomes similar to scripting.
// Now we simply set same rotation speed for all objects
Rotator* rotator = boxNode->CreateComponent<Rotator>();
rotator->SetRotationSpeed(Vector3(10.0f, 20.0f, 30.0f));
}
// Create the camera. Let the starting position be at the world origin. As the fog limits maximum visible distance, we can
// bring the far clip plane closer for more effective culling of distant objects
cameraNode_ = scene_->CreateChild("Camera");
Camera* camera = cameraNode_->CreateComponent<Camera>();
camera->SetFarClip(100.0f);
// Create a point light to the camera scene node
Light* light = cameraNode_->CreateComponent<Light>();
light->SetLightType(LIGHT_POINT);
light->SetRange(30.0f);
}
void RenderToTexture::CreateScene()
{
ResourceCache* cache = GetSubsystem<ResourceCache>();
{
// Create the scene which will be rendered to a texture
rttScene_ = new Scene(context_);
// Create octree, use default volume (-1000, -1000, -1000) to (1000, 1000, 1000)
rttScene_->CreateComponent<Octree>();
// Create a Zone for ambient light & fog control
Node* zoneNode = rttScene_->CreateChild("Zone");
Zone* zone = zoneNode->CreateComponent<Zone>();
// Set same volume as the Octree, set a close bluish fog and some ambient light
zone->SetBoundingBox(BoundingBox(-1000.0f, 1000.0f));
zone->SetAmbientColor(Color(0.05f, 0.1f, 0.15f));
zone->SetFogColor(Color(0.1f, 0.2f, 0.3f));
zone->SetFogStart(10.0f);
zone->SetFogEnd(100.0f);
// Create randomly positioned and oriented box StaticModels in the scene
const unsigned NUM_OBJECTS = 2000;
for (unsigned i = 0; i < NUM_OBJECTS; ++i)
{
Node* boxNode = rttScene_->CreateChild("Box");
boxNode->SetPosition(Vector3(Random(200.0f) - 100.0f, Random(200.0f) - 100.0f, Random(200.0f) - 100.0f));
// Orient using random pitch, yaw and roll Euler angles
boxNode->SetRotation(Quaternion(Random(360.0f), Random(360.0f), Random(360.0f)));
StaticModel* boxObject = boxNode->CreateComponent<StaticModel>();
boxObject->SetModel(cache->GetResource<Model>("Models/Box.mdl"));
boxObject->SetMaterial(cache->GetResource<Material>("Materials/Stone.xml"));
// Add our custom Rotator component which will rotate the scene node each frame, when the scene sends its update event.
// Simply set same rotation speed for all objects
Rotator* rotator = boxNode->CreateComponent<Rotator>();
rotator->SetRotationSpeed(Vector3(10.0f, 20.0f, 30.0f));
}
// Create a camera for the render-to-texture scene. Simply leave it at the world origin and let it observe the scene
rttCameraNode_ = rttScene_->CreateChild("Camera");
Camera* camera = rttCameraNode_->CreateComponent<Camera>();
camera->SetFarClip(100.0f);
// Create a point light to the camera scene node
Light* light = rttCameraNode_->CreateComponent<Light>();
light->SetLightType(LIGHT_POINT);
light->SetRange(30.0f);
}
{
// Create the scene in which we move around
scene_ = new Scene(context_);
// Create octree, use also default volume (-1000, -1000, -1000) to (1000, 1000, 1000)
scene_->CreateComponent<Octree>();
// Create a Zone component for ambient lighting & fog control
Node* zoneNode = scene_->CreateChild("Zone");
Zone* zone = zoneNode->CreateComponent<Zone>();
zone->SetBoundingBox(BoundingBox(-1000.0f, 1000.0f));
zone->SetAmbientColor(Color(0.1f, 0.1f, 0.1f));
zone->SetFogStart(100.0f);
zone->SetFogEnd(300.0f);
// Create a directional light without shadows
Node* lightNode = scene_->CreateChild("DirectionalLight");
lightNode->SetDirection(Vector3(0.5f, -1.0f, 0.5f));
Light* light = lightNode->CreateComponent<Light>();
light->SetLightType(LIGHT_DIRECTIONAL);
light->SetColor(Color(0.2f, 0.2f, 0.2f));
light->SetSpecularIntensity(1.0f);
// Create a "floor" consisting of several tiles
for (int y = -5; y <= 5; ++y)
{
for (int x = -5; x <= 5; ++x)
{
Node* floorNode = scene_->CreateChild("FloorTile");
floorNode->SetPosition(Vector3(x * 20.5f, -0.5f, y * 20.5f));
floorNode->SetScale(Vector3(20.0f, 1.0f, 20.f));
StaticModel* floorObject = floorNode->CreateComponent<StaticModel>();
floorObject->SetModel(cache->GetResource<Model>("Models/Box.mdl"));
floorObject->SetMaterial(cache->GetResource<Material>("Materials/Stone.xml"));
}
}
// Create a "screen" like object for viewing the second scene. Construct it from two StaticModels, a box for the frame
// and a plane for the actual view
{
Node* boxNode = scene_->CreateChild("ScreenBox");
boxNode->SetPosition(Vector3(0.0f, 10.0f, 0.0f));
boxNode->SetScale(Vector3(21.0f, 16.0f, 0.5f));
StaticModel* boxObject = boxNode->CreateComponent<StaticModel>();
boxObject->SetModel(cache->GetResource<Model>("Models/Box.mdl"));
boxObject->SetMaterial(cache->GetResource<Material>("Materials/Stone.xml"));
Node* screenNode = scene_->CreateChild("Screen");
screenNode->SetPosition(Vector3(0.0f, 10.0f, -0.27f));
screenNode->SetRotation(Quaternion(-90.0f, 0.0f, 0.0f));
screenNode->SetScale(Vector3(20.0f, 0.0f, 15.0f));
StaticModel* screenObject = screenNode->CreateComponent<StaticModel>();
screenObject->SetModel(cache->GetResource<Model>("Models/Plane.mdl"));
// Create a renderable texture (1024x768, RGB format), enable bilinear filtering on it
SharedPtr<Texture2D> renderTexture(new Texture2D(context_));
renderTexture->SetSize(1024, 768, Graphics::GetRGBFormat(), TEXTURE_RENDERTARGET);
renderTexture->SetFilterMode(FILTER_BILINEAR);
// Create a new material from scratch, use the diffuse unlit technique, assign the render texture
// as its diffuse texture, then assign the material to the screen plane object
SharedPtr<Material> renderMaterial(new Material(context_));
renderMaterial->SetTechnique(0, cache->GetResource<Technique>("Techniques/DiffUnlit.xml"));
renderMaterial->SetTexture(TU_DIFFUSE, renderTexture);
screenObject->SetMaterial(renderMaterial);
// Get the texture's RenderSurface object (exists when the texture has been created in rendertarget mode)
// and define the viewport for rendering the second scene, similarly as how backbuffer viewports are defined
// to the Renderer subsystem. By default the texture viewport will be updated when the texture is visible
// in the main view
RenderSurface* surface = renderTexture->GetRenderSurface();
SharedPtr<Viewport> rttViewport(new Viewport(context_, rttScene_, rttCameraNode_->GetComponent<Camera>()));
surface->SetViewport(0, rttViewport);
}
// Create the camera which we will move around. Limit far clip distance to match the fog
cameraNode_ = scene_->CreateChild("Camera");
Camera* camera = cameraNode_->CreateComponent<Camera>();
camera->SetFarClip(300.0f);
// Set an initial position for the camera scene node above the plane
cameraNode_->SetPosition(Vector3(0.0f, 7.0f, -30.0f));
}
}
