//------------------------------
GenCamera* CameraImporter::createCamera( const COLLADAFW::Camera* camera )
{
// TODO TARGETED_CAMERA
GenCamera* maxCamera = getMaxImportInterface()->CreateCameraObject( FREE_CAMERA );
float targetDistance = 100; // we don't have a target, therefore we need to set anything
maxCamera->SetTDist(0, targetDistance);
if (camera->getCameraType() == COLLADAFW::Camera::PERSPECTIVE)
{
// Perspective camera
maxCamera->SetOrtho(FALSE);
switch ( camera->getDescriptionType() )
{
case COLLADAFW::Camera::SINGLE_X:
case COLLADAFW::Camera::X_AND_Y:
case COLLADAFW::Camera::ASPECTRATIO_AND_X:
maxCamera->SetFOVType(0);
maxCamera->SetFOV(0, COLLADABU::Math::Utils::degToRadF( (float)camera->getXFov()));
break;
case COLLADAFW::Camera::SINGLE_Y:
case COLLADAFW::Camera::ASPECTRATIO_AND_Y:
{
float aspectRatio = getMaxInterface()->GetRendImageAspect();
maxCamera->SetFOVType(1);
float yfov = COLLADABU::Math::Utils::degToRadF( (float)camera->getYFov());
float xfov = 2 * atan( aspectRatio * tan(yfov/2));
maxCamera->SetFOV(0, xfov);
break;
}
}
}
else
{
// Orthographic camera
maxCamera->SetOrtho(TRUE);
// Consider only the correct magnification and the target distance,
// which is kept constant, to calculate the FOV.
switch ( camera->getDescriptionType() )
{
case COLLADAFW::Camera::SINGLE_X:
case COLLADAFW::Camera::X_AND_Y:
case COLLADAFW::Camera::ASPECTRATIO_AND_X:
{
maxCamera->SetFOVType(0);
float fov = 2 * (float)atan( camera->getXMag()/targetDistance );
maxCamera->SetFOV(0, fov);
break;
}
case COLLADAFW::Camera::SINGLE_Y:
case COLLADAFW::Camera::ASPECTRATIO_AND_Y:
{
float aspectRatio = getMaxInterface()->GetRendImageAspect();
maxCamera->SetFOVType(1);
float yfov = 2 * (float)atan( camera->getYMag()/targetDistance );
float xfov = 2 * atan( aspectRatio * tan(yfov/2));
maxCamera->SetFOV(0, xfov );
break;
}
}
}
// Common camera parameters: nearZ, farZ
// The "Far Clip " animatable parameter intentionally has an extra space in the definition.
maxCamera->SetClipDist(0, CAM_HITHER_CLIP, (float)camera->getNearClippingPlane());
maxCamera->SetClipDist(0, CAM_YON_CLIP, (float)camera->getFarClippingPlane());
maxCamera->SetManualClip(TRUE);
maxCamera->Enable(TRUE);
return maxCamera;
}
