Add ResetScale too fit window function.(After First render and MPR change)

src/src/base/infinitiViewer.cxx

@@ -665,7 +665,38 @@ void infinitiViewer::SetZoomScale(double scale) {
 	}
 }
 
-void infinitiViewer::SetPanOffset(double* p) {
+void infinitiViewer::ResetZoomScaleToFitWindowSize() {
+    vtkImageData * inputData = nullptr;
+    if (Renderer && (inputData = GetInput())){
+        double proj[4] ={0,0,0,1};
+        Renderer->GetActiveCamera()->GetDirectionOfProjection(proj);
+        double viewUp[4]= {0,0,0,1};
+        this->Renderer->GetActiveCamera()->GetViewUp(viewUp);
+        double viewRight[4]= {0,0,0,1};
+        vtkMath::Cross(viewUp,proj,viewRight);
+        int upIndex = (int) abs(round(1.0*viewUp[1]+2.0*viewUp[2]));
+        int rightIndex = (int)abs(round(1.0*viewRight[1]+2.0*viewRight[2]));
+        int* size = this->RenderWindow->GetSize();
+        double whFactor = 0.5;
+        double ws = 1.0* size[0];
+        double hs = 1.0* size[1];
+        double hp = 1.0 * inputData->GetBounds()[upIndex*2+1];
+        double wp = 1.0 * inputData->GetBounds()[rightIndex*2+1];
+        //because Parallel Scale is campare with half height
+        if(wp/hp>ws/hs){
+            double aspect = hs/ws;
+            SetZoomScale((wp)*aspect*0.5+3.0);
+        }
+        else{
+            SetZoomScale((hp)*0.5+3.0);
+        }
+    }
+    else{
+        SetZoomScale(1.0);
+    }
+}
+
+void infinitiViewer::SetPanOffset(const double* p) {
 	double fp[3] = { 0.0,0.0,0.0 };
 	Renderer->GetActiveCamera()->GetPosition(fp);
 	fp[0] = fp[0] + p[0];
@@ -969,7 +1000,8 @@ void infinitiViewer::Render()
 				//camera->GetPosition(cameraPosition);
 				int currentIndex = ImageMapper->GetSliceNumber();
 				if (currentIndex != lastIndex) this->SetSlice(lastIndex);
-				this->Renderer->GetActiveCamera()->SetParallelScale(xs < 150 ? 75 : (xs - 1) / 2.0);
+                ResetZoomScaleToFitWindowSize();
+//				this->Renderer->GetActiveCamera()->SetParallelScale(xs < 150 ? 75 : (xs - 1) / 2.0);
 				//calibration of image by VFlip
 				//this->Renderer->GetActiveCamera()->Elevation(-180);
 				//this->Renderer->GetActiveCamera()->Roll(180);
@@ -1165,9 +1197,8 @@ void infinitiViewer::SetSliceOrientation(int orientation)
 
     if (this->Renderer && this->GetInput())
     {
-        double scale = this->Renderer->GetActiveCamera()->GetParallelScale();
         this->Renderer->ResetCamera();
-        this->Renderer->GetActiveCamera()->SetParallelScale(scale);
+        ResetZoomScaleToFitWindowSize();
     }
     // first render to update imageMapper slice
     this->Render();

src/src/base/infinitiViewer.h

@@ -160,7 +160,8 @@ public:
 	//@}
 
 	void SetZoomScale(double scale);
-	void SetPanOffset(double* point);
+	void SetPanOffset(const double* point);
+	void ResetZoomScaleToFitWindowSize();
 	//@{
 	/**
 	 * Get the position (x and y) of the rendering window in
@@ -393,7 +394,8 @@ private:
     bool rulerActive = false;
     void RenderRuler();
     int currentPresetIndex=1;
-
+    int viewUpIndex = 0;
+    int viewRightIndex = 1;
 	DicomCornerInfo m_cornerInfo;
 	char SOP_UID[20]={0};
     vtkNew<vtkMatrix4x4> matrix;

src/src/view/dicomimageview.cpp

@@ -1,4 +1,4 @@
-#include "view/dicomimageview.h"
+#include "view/dicomimageview.h"
 #include <QMessageBox>
 #include <QDebug>
 #include "view/thumbnailImage.h"
@@ -566,13 +566,9 @@ void DicomImageView::SetPanOffset(double * pan)
 //FIXME:这个函数有问题,会导致MPR显示出错！！！
 void DicomImageView::ResetPanZoom()
 {
-    return;
     if (HasSeries())
     {
-        //necessary to reset pan
-        _ImageViewer->GetRenderer()->ResetCamera();
-        //necessary to reset zoom
-        _ImageViewer->GetRenderer()->GetActiveCamera()->SetParallelScale(_Series->GetExtent());
+        _ImageViewer->ResetZoomScaleToFitWindowSize();
 
     }
 }
@@ -622,7 +618,6 @@ void DicomImageView::HFlip()
 {
     if (HasSeries()) {
         int slice = _ImageViewer->GetSlice();
-        ResetPanZoom();
         //HFlip
         //_ImageViewer->GetRenderer()->GetActiveCamera()->SetViewUp(0, 1, 0);
         _ImageViewer->GetRenderer()->GetActiveCamera()->Azimuth(180);
@@ -643,7 +638,6 @@ void DicomImageView::VFlip()
         //double scale = _ImageViewer->GetRenderer()->GetActiveCamera()->GetParallelScale();
 
         int slice = _ImageViewer->GetSlice();
-        ResetPanZoom();
         //Method 2: Order matters
         _ImageViewer->GetRenderer()->GetActiveCamera()->Elevation(-180);
         _ImageViewer->GetRenderer()->GetActiveCamera()->Roll(180);
@@ -664,7 +658,6 @@ void DicomImageView::Rotate(double angle, TransFormType operation)
 {
     if (HasSeries()) {
         int slice = _ImageViewer->GetSlice();
-        ResetPanZoom();
         _ImageViewer->GetRenderer()->GetActiveCamera()->Roll(angle);
         //to avoid black out problem during slicing
         //slcing is related with rotation, you have to recalculate to get it right
@@ -843,6 +836,7 @@ void DicomImageView::SetSliceOrientation(int orientation) {
     _scrollBar->setValue(0);
 }
 
+
 int DicomImageView::GetSliceOrientation() {
     return slice_orientation;
 }