Ejemplo n.º 1
0
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);
}
Ejemplo n.º 2
0
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));
    }
}