void CameraZoomOut(KFbxScene* pScene, int dY)
{
KFbxCamera* lCamera = GetCurrentCamera(pScene);
if (lCamera)
{
if (lCamera->ProjectionType.Get() == KFbxCamera::ePERSPECTIVE)
{
double lOriginalAperture = sqrt(lCamera->GetApertureWidth());
double lApertureTransform = lOriginalAperture+dY/400.0;
if (lApertureTransform <0.25)
{
lApertureTransform =0.25;
}
if (lApertureTransform*lApertureTransform >179)
{
lApertureTransform = sqrt(179.0);
}
double lApertureH = lApertureTransform/lOriginalAperture*sqrt(lCamera->GetApertureHeight());
double lApertureWidthOrig = lCamera->GetApertureWidth();
double lApertureHeightOrig = lCamera->GetApertureHeight();
if (lCamera->GetApertureMode() == KFbxCamera::eFOCAL_LENGTH) {
double lFLOrig = lCamera->FocalLength.Get();
double lFOVOrig = lCamera->ComputeFieldOfView(lFLOrig); // recompute to be sure.
lCamera->SetApertureWidth(lApertureTransform * lApertureTransform);
lCamera->SetApertureHeight(lApertureH * lApertureH);
double lFLNew = lCamera->ComputeFocalLength(lFOVOrig);
double lFOVNew = lCamera->ComputeFieldOfView(lFLNew);
lCamera->FocalLength.Set(lFLNew);
lCamera->FieldOfView.Set(lFOVNew);
} else if (lCamera->GetApertureMode() == KFbxCamera::eVERTICAL
|| lCamera->GetApertureMode() == KFbxCamera::eHORIZONTAL) {
double lFOVOrig = lCamera->FieldOfView.Get();
double lFLOrig = lCamera->ComputeFocalLength(lFOVOrig); // recompute to be sure.
lCamera->SetApertureWidth(lApertureTransform * lApertureTransform);
lCamera->SetApertureHeight(lApertureH * lApertureH);
double lFOVNew = lCamera->ComputeFieldOfView(lFLOrig);
double lFLNew = lCamera->ComputeFocalLength(lFOVNew);
lCamera->FieldOfView.Set(lFOVNew);
lCamera->FocalLength.Set(lFLNew);
} else if (lCamera->GetApertureMode() == KFbxCamera::eHORIZONTAL_AND_VERTICAL) {
double lFOVOrig = lCamera->FieldOfViewY.Get();
double lFLOrig = lCamera->ComputeFocalLength(lFOVOrig); // recompute to be sure.
lCamera->SetApertureWidth(lApertureTransform * lApertureTransform);
lCamera->SetApertureHeight(lApertureH * lApertureH);
double lFOVNew = lCamera->ComputeFieldOfView(lFLOrig);
double lFLNew = lCamera->ComputeFocalLength(lFOVNew);
lCamera->FieldOfViewY.Set(lFOVNew);
lCamera->FocalLength.Set(lFLNew);
}
lCamera->SetApertureWidth(lApertureWidthOrig);
lCamera->SetApertureHeight(lApertureHeightOrig);
}
else
{
gsOrthoCameraScale *= 1.25;
}
}
}
// Set the view to the current camera settings.
void SetCamera(KFbxScene* pScene,
KTime& pTime,
KFbxAnimLayer* pAnimLayer,
KArrayTemplate<KFbxNode*>& pCameraArray)
{
KFbxCamera* lCamera = GetCurrentCamera(pScene, pTime, pCameraArray);
KFbxNode* lCameraNode = lCamera ? lCamera->GetNode() : NULL;
KFbxVector4 lEye(0,0,1);
KFbxVector4 lCenter(0,0,0);
KFbxVector4 lUp(0,1,0);
KFbxVector4 lForward, lRight;
if (lCamera)
{
lEye = lCamera->Position.Get();
lUp = lCamera->UpVector.Get();
}
if (lCameraNode && lCameraNode->GetTarget())
{
lCenter = GetGlobalPosition(lCameraNode->GetTarget(), pTime).GetT();
}
else
{
if (!lCameraNode || IsProducerCamera(pScene, lCamera))
{
if (lCamera)
lCenter = lCamera->InterestPosition.Get();
}
else
{
KFbxXMatrix lGlobalRotation;
KFbxVector4 lRotationVector(GetGlobalPosition(lCameraNode, pTime).GetR());
lGlobalRotation.SetR(lRotationVector);
KFbxVector4 lInterestPosition(lCamera->InterestPosition.Get());
KFbxVector4 lCameraGlobalPosition(GetGlobalPosition(lCameraNode, pTime).GetT());
double lLength = (KFbxVector4(lInterestPosition - lCameraGlobalPosition).Length());
lRotationVector = KFbxVector4(1.0,0,0);
lCenter = lGlobalRotation.MultT(lRotationVector);
lCenter *= lLength;
lCenter += lEye;
lRotationVector = KFbxVector4(0,1.0,0);
lUp = lGlobalRotation.MultT(lRotationVector);
}
}
lForward = lCenter - lEye;
lForward.Normalize();
lRight = lForward.CrossProduct(lUp);
lRight.Normalize();
lUp = lRight.CrossProduct(lForward);
lUp.Normalize();
double lRadians = 0;
if (lCamera)
lRadians = 3.1416 * lCamera->Roll.Get() / 180.0;
lUp *= cos(lRadians);
lRight *= sin(lRadians);
lUp = lUp + lRight;
double lNearPlane = 0.01;
if (lCamera)
lNearPlane = lCamera->GetNearPlane();
double lFarPlane = 1000.0;
if (lCamera)
lFarPlane = lCamera->GetFarPlane();
if (lCamera && lCamera->ProjectionType.Get() == KFbxCamera::ePERSPECTIVE)
{
double lFieldOfViewY=0.0;
double lAspect = lCamera->GetApertureWidth() * lCamera->GetSqueezeRatio() / lCamera->GetApertureHeight();
if (lCamera->GetApertureMode() == KFbxCamera::eHORIZONTAL
|| lCamera->GetApertureMode() == KFbxCamera::eVERTICAL) {
lFieldOfViewY = lCamera->FieldOfView.Get();
if (lCamera->GetApertureMode() == KFbxCamera::eHORIZONTAL)
lFieldOfViewY /= lAspect;
} else if (lCamera->GetApertureMode() == KFbxCamera::eFOCAL_LENGTH) {
lFieldOfViewY = lCamera->ComputeFieldOfView(lCamera->FocalLength.Get());
lFieldOfViewY /= lAspect;
} else if (lCamera->GetApertureMode() == KFbxCamera::eHORIZONTAL_AND_VERTICAL) {
lFieldOfViewY = lCamera->FieldOfViewY.Get();
}
GlSetCameraPerspective(lFieldOfViewY,
lAspect,
lNearPlane,
lFarPlane,
lEye,
lCenter,
lUp);
}
else
{
double lPixelRatio = 1.0;
if (lCamera)
lPixelRatio = lCamera->GetPixelRatio();
int lWidth, lHeight;
double lLeftPlane, lRightPlane, lBottomPlane, lTopPlane;
GlGetWindowSize(lWidth, lHeight);
if(lWidth < lHeight)
{
lLeftPlane = -gsOrthoCameraScale * lPixelRatio;
lRightPlane = gsOrthoCameraScale * lPixelRatio;
lBottomPlane = -gsOrthoCameraScale * lHeight / lWidth;
lTopPlane = gsOrthoCameraScale * lHeight / lWidth;
}
else
{
lWidth *= (int) lPixelRatio;
lLeftPlane = -gsOrthoCameraScale * lWidth / lHeight;
lRightPlane = gsOrthoCameraScale * lWidth / lHeight;
lBottomPlane = -gsOrthoCameraScale;
lTopPlane = gsOrthoCameraScale;
}
GlSetCameraOrthogonal(lLeftPlane,
lRightPlane,
lBottomPlane,
lTopPlane,
lNearPlane,
lFarPlane,
lEye,
lCenter,
lUp);
}
}