TextureProjectorNode::TextureProjectorNode( Texture* texture, SceneManagerptr sceneManagerPtr, Nodeptr parent )
:Node(parent , sceneManagerPtr)
{
this->texture = texture;
projectionPolicy = PROJECTION_POLICY_PROJECTOR;
projectorPosition.x = 15.0f; projectorPosition.y = 16.0f; projectorPosition.z = -12.0f;
projectorTarget.x = 0.0f; projectorTarget.y = 0.0f; projectorTarget.z = 0.0f;
projectorUp.x = 0.0f; projectorUp.y =1.0f; projectorUp.z = 0.0f;
textureProjector = new TextureProjector(sceneManager->getActiveCamera() , projectorPosition, projectorTarget, projectorUp);
projectorUpdator = new ProjectorUpdater(textureProjector);
addAnimator(projectorUpdator);
projectorTexUnitState = new TextureUnitState(texture);
projectorTexUnitState->getTextureAttributes()->texture_mode = ETEXM_MODULATE;
projectorTexUnitState->getTexCoordGeneration()->bEnable = true;
projectorTexUnitState->getTexCoordGeneration()->texGenMode = ETGM_EYE_LINEAR;
projectorTexUnitState->getTexCoordGeneration()->texComponentFormat = ETCF_4;
projectorUpdator->projectorTextureAttributes = projectorTexUnitState->getTextureAttributes();
Vector3 dir, right, upVector;
dir.sub( projectorTarget, projectorPosition);
dir.normalize();
CameraNode* camera = sceneManager->getActiveCamera();
float fov = camera->getFOV();
dir.scale( camera->getNearPlane() );
Matrix4f& view = textureProjector->getViewMatrix();
right.x = view.m00; right.y = view.m01;right.z = view.m02;
upVector.x = view.m10; upVector.x = view.m11; upVector.x = view.m12;
float height = 2.0f*camera->getNearPlane()*tan(fov/2.0f);
float width = height* camera->getAspectRatio();
width = height = 1.0f;
n1.x = projectorPosition.x + dir.x + 0.5f*width*right.x + 0.5f*height*upVector.x;
n1.y = projectorPosition.y + dir.y + 0.5f*width*right.y + 0.5f*height*upVector.y;
n1.z = projectorPosition.z + dir.z + 0.5f*width*right.z + 0.5f*height*upVector.z;
n2.x = projectorPosition.x + dir.x + 0.5f*width*right.x - 0.5f*height*upVector.x;
n2.y = projectorPosition.y + dir.y + 0.5f*width*right.y - 0.5f*height*upVector.y;
n2.z = projectorPosition.z + dir.z + 0.5f*width*right.z - 0.5f*height*upVector.z;
n3.x = projectorPosition.x + dir.x - 0.5f*width*right.x + 0.5f*height*upVector.x;
n3.y = projectorPosition.y + dir.y - 0.5f*width*right.y + 0.5f*height*upVector.y;
n3.z = projectorPosition.z + dir.z - 0.5f*width*right.z + 0.5f*height*upVector.z;
n4.x = projectorPosition.x + dir.x - 0.5f*width*right.x - 0.5f*height*upVector.x;
n4.y = projectorPosition.y + dir.y - 0.5f*width*right.y - 0.5f*height*upVector.y;
n4.z = projectorPosition.z + dir.z - 0.5f*width*right.z - 0.5f*height*upVector.z;
}
