transfer functions

A3/camera.cpp

@@ -45,7 +45,7 @@ void Camera::setupCamera(GLdouble aspect )
     if(persp){
         perspective(45.0,aspect,0.01,100.0);
     } else {
-        int size = 4;
+        int size = 2;
         glOrtho(-size*aspect,size*aspect,-size,size,0.01,100.0);
     }
 

A3/controler.cpp

@@ -10,6 +10,7 @@ Controler::Controler(MainWindow *mainwindow,Scene *scene)
     this->mainwindow = mainwindow;
     this->scene = scene;
     viewMode = CAMERA;
+
 }
 
 void Controler::mousePressed(GLView* view, QMouseEvent *event)
@@ -37,7 +38,7 @@ void Controler::mouseMoveEvent(GLView* view, QMouseEvent *event)
     }
 }
 
- void Controler::wheelEvent(GLView* view, QWheelEvent *event ) {
+void Controler::wheelEvent(GLView* view, QWheelEvent *event ) {
     activeView = view;
     mainwindow->setActiveView(view);
 
@@ -59,7 +60,7 @@ void Controler::mouseMoveEvent(GLView* view, QMouseEvent *event)
     }
 
     mainwindow->updateGL();
- }
+}
 
 
 QVector3D* Controler::trackballPoint(int x, int y){
@@ -173,6 +174,12 @@ void Controler::addVolume(QString filePath){
 
     char ***data = new char**[z];
 
+    int* histogram = new int[256];
+
+    for(int i = 0; i < 256; i++)
+    {
+        histogram[i] = 0;
+    }
 
     int count = 0;
     //  std::cout<<std::hex;
@@ -187,9 +194,12 @@ void Controler::addVolume(QString filePath){
             data[k][j] = new char[x];
             for(int i = 0; i < x; i++)
             {
-                data[k][j][i] = rawdata.at(count++);
+                uchar value = rawdata.at(count++);
+                data[k][j][i] = value;
+                histogram[value]++;
+
                 if(k == printLine ){
-                    int temp = ((uchar)data[k][j][i])*9/256;
+                    int temp = value*9/256;
                     std::cout<<temp;
                 }
             }
@@ -199,6 +209,8 @@ void Controler::addVolume(QString filePath){
         }
     }
 
+
+
     //qDebug()<<file.readData(data,file.size()-file.pos());
     int type = GL_UNSIGNED_BYTE;
     if(rawdata.size()>x*y*z)
@@ -211,8 +223,27 @@ void Controler::addVolume(QString filePath){
 
     scene->addSceneObjectTaActive(volume);
 
-
     file.close();
+
+    uchar *trans = new uchar[4*256];
+
+    for(int i = 0; i < 256; i+=1){
+        int index = i*4;
+        trans[index] = i;
+        trans[index+1] = i;
+        trans[index+2] = i;
+        trans[index+3] = i;
+    }
+
+   for(int i = 0; i < 4; i++){
+     //  mainwindow->getViews()[i]->loadTransfer(trans);
+   }
+
+   this->mainwindow->transEditor->setHistogram(histogram);
+   // this->mainwindow->transEditor->setTransferFunction(trans);
+
+
+
     qDebug()<<"File Read finish";
 
 

A3/cubewidget.cpp

@@ -255,8 +255,6 @@ void CubeWidget::mousePressEvent(QMouseEvent *event )
     lastSpeherePos = trackballPoint(event->pos().x(),event->pos().y());
     lastScreenPos = new QPointF(event->screenPos());
     event->accept();
-
-
 }
 
 void CubeWidget::mouseMoveEvent(QMouseEvent *event )
@@ -312,7 +310,6 @@ QVector3D* CubeWidget::trackballPoint(int x, int y){
     zo = qMax(qCos(M_PI_2*d),qreal(0.0)); //qMin(d,1.0f)
 
 
-
     QVector3D *pos = new QVector3D(xo,yo,zo);
     pos->normalize();
     //  qDebug()<<"x:"<< xo << " y:"<<yo<<" z:"<<zo;

A3/display.frag

@@ -17,9 +17,10 @@ float stepsize = 0.001;
 
 
 vec4 transfer(float scalar){
-    float pos = (scalar*255.0/256.0 + 0.5*256.0);
-    return vec4(scalar);
-    //return texture1D(transferData,pos);
+    float pos = (scalar*255.0/256.0 + 1/256.0/2);
+    //return vec4(scalar);
+    //return vec4(pos);
+    return texture1D(transferData,pos);
 }
 
 vec3 phong(vec3 color, vec3 normal){
@@ -101,10 +102,9 @@ void main(void)
         }
 
 
-        // gl_FragColor = vec4(gl_TexCoord[0].xyz,1);
-        //gl_FragColor = vec4(vec3(count),1);
-        //gl_FragColor = vec4(normalize(step),1);
-        //gl_FragColor = vec4(normalize(gl_ModelViewProjectionMatrixInverse*vec4(0,1,0,0.0)));
+        //gl_FragColor = vec4(texture1D(transferData,front.x));
+
+        //gl_FragColor = vec4(gl_TexCoord[0].xyz,1);
         //gl_FragColor = vec4(texture3D(volumeData,vec3(front.xy,0.5)).x);
     }
 }

A3/glview.cpp

@@ -12,6 +12,7 @@ GLView::GLView(Scene *scene,Camera * camera,Controler *controler )
     gridStepSize = 1;
     isGridEnabled = false;
     MIP = false;
+    afterInit = false;
 }
 
 QSize GLView::minimumSizeHint() const
@@ -53,6 +54,7 @@ void GLView::initializeGL ( ) {
     //Shader Setup
     initShader();
     shader->bind();
+    afterInit = true;
 }
 
 void GLView::initShader()
@@ -432,18 +434,23 @@ void GLView::loadData(int width, int height, int depth, char* data, int type  )
 
 void GLView::loadTransfer(uchar* data )
 {
+//    uchar *test = new uchar[4*256];
 
+//    for(int i = 0; i< 4*256;i++){
+//       test[i] = data[i];
+//    }
     glGenTextures( 1, &transferFunction );
     glBindTexture(GL_TEXTURE_1D, transferFunction);
 
     // Filtering
-    glTexParameteri( GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
-    glTexParameteri( GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
+    glTexParameteri( GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_NEAREST );
+    glTexParameteri( GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_NEAREST );
 
     // Wrap
     glTexParameteri( GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, GL_CLAMP );
 
     glTexImage1D(GL_TEXTURE_1D,0,GL_RGBA,256,0,GL_RGBA,GL_UNSIGNED_BYTE,data);
+   if(afterInit) updateGL();
 }
 
 

A3/glview.h

@@ -44,6 +44,7 @@ public:
     Camera *getCamera();
 
 private:
+    bool afterInit;
     QGLShaderProgram *shader;
     QGLShaderProgram *displayShader;
     Scene *scene;

A3/hellocube.pro

@@ -25,7 +25,8 @@ SOURCES += main.cpp\
     sceneobject.cpp \
     scenenode.cpp \
     treedelegate.cpp \
-    scenevolume.cpp
+    scenevolume.cpp \
+    transferfunctioneditor.cpp
 
 HEADERS  += mainwindow.h \
     cubewidget.h \
@@ -38,7 +39,8 @@ HEADERS  += mainwindow.h \
     scenenode.h \
     glut.h \
     treedelegate.h \
-    scenevolume.h
+    scenevolume.h \
+    transferfunctioneditor.h
 
 RESOURCES += \
     hellocube.qrc
@@ -48,3 +50,6 @@ DISTFILES += \
     phong.vert \
     display.frag \
     display.vert
+
+FORMS += \
+    transferui.ui

A3/mainwindow.cpp

@@ -279,6 +279,8 @@ MainWindow::MainWindow(QWidget *parent)
 
 
 
+
+
     // Assemble Menus
     fileMenu->addAction(exitAction);
     menuBar->addMenu(fileMenu);
@@ -325,9 +327,92 @@ void MainWindow::initDoc()
 
     dock->setWidget(sceneView);
 
+
+
+
+    //Transfer Function Doc
+    QDockWidget *transferDock = new QDockWidget("Transfer Function Editor",this);
+    transferDock->setAllowedAreas(Qt::LeftDockWidgetArea | Qt::RightDockWidgetArea);
+
+    transEditor = new TransferFunctionEditor(this);
+
+    connect(transEditor,SIGNAL(dataChanged(uchar*)),perspectiveView,SLOT(loadTransfer(uchar*)));
+    connect(transEditor,SIGNAL(dataChanged(uchar*)),frontView,SLOT(loadTransfer(uchar*)));
+    connect(transEditor,SIGNAL(dataChanged(uchar*)),leftView,SLOT(loadTransfer(uchar*)));
+    connect(transEditor,SIGNAL(dataChanged(uchar*)),topView,SLOT(loadTransfer(uchar*)));
+
+
+
+            QPushButton *save = new QPushButton("Save");
+    connect(save,SIGNAL(released()),transEditor,SLOT(save()));
+    QPushButton *load = new QPushButton("Load");
+    connect(load,SIGNAL(released()),transEditor,SLOT(load()));
+    QPushButton *reset = new QPushButton("Reset");
+    connect(reset,SIGNAL(released()),transEditor,SLOT(reset()));
+    QPushButton *Smooth = new QPushButton("smooth");
+    connect(Smooth,SIGNAL(released()),transEditor,SLOT(smooth()));
+
+    QCheckBox *red = new QCheckBox("red");
+    red->setChecked(true);
+    connect(red,SIGNAL(clicked(bool)),transEditor,SLOT(paintRed(bool)));
+
+    QCheckBox *green = new QCheckBox("green");
+    green->setChecked(true);
+    connect(green,SIGNAL(clicked(bool)),transEditor,SLOT(paintGreen(bool)));
+
+    QCheckBox *blue = new QCheckBox("blue");
+    blue->setChecked(true);
+    connect(blue,SIGNAL(clicked(bool)),transEditor,SLOT(paintBlue(bool)));
+
+    QCheckBox *alpha = new QCheckBox("alpha");
+    alpha->setChecked(true);
+    connect(alpha,SIGNAL(clicked(bool)),transEditor,SLOT(paintAlpha(bool)));
+
+
+    QWidget *all = new QWidget;
+    QWidget *buttons = new QWidget;
+    QWidget *left = new QWidget;
+    QWidget *right = new QWidget;
+
+    QVBoxLayout *checkLayout = new QVBoxLayout;
+    checkLayout->addWidget(red);
+    checkLayout->addWidget(green);
+    checkLayout->addWidget(blue);
+    checkLayout->addWidget(alpha);
+    right->setLayout(checkLayout);
+
+    QGridLayout *butLayout = new QGridLayout;
+    butLayout->addWidget(save,0,0);
+    butLayout->addWidget(load,0,1);
+    butLayout->addWidget(reset,1,0);
+    butLayout->addWidget(Smooth,1,1);
+    left->setLayout(butLayout);
+
+
+
+
+    QHBoxLayout *buttonsLayout = new QHBoxLayout;
+    buttonsLayout->addWidget(left);
+    buttonsLayout->addWidget(right);
+    buttons->setLayout(buttonsLayout);
+
+    QVBoxLayout *allLayout = new QVBoxLayout;
+    allLayout->addWidget(transEditor);
+    allLayout->addWidget(buttons);
+    all->setLayout(allLayout);
+
+    transferDock->setWidget(all);
+
+    transferDock->setSizePolicy(QSizePolicy::Maximum,QSizePolicy::Maximum);
+    addDockWidget(Qt::RightDockWidgetArea, transferDock);
     addDockWidget(Qt::RightDockWidgetArea, dock);
 
 
+
+
+
+
+
 }
 
 void MainWindow::updateStatusBar()

A3/mainwindow.h

@@ -12,11 +12,13 @@
 #include <QStatusBar>
 #include <QSlider>
 #include <QSplitter>
+#include <QPushButton>
 
 #include <glview.h>
 #include <scene.h>
 #include <camera.h>
 #include <controler.h>
+#include <transferfunctioneditor.h>
 
 class MainWindow : public QMainWindow
 {
@@ -80,6 +82,7 @@ private:
     QTimer *timer;
 
 
+
     void initDoc();
 
     void initViews();
@@ -99,6 +102,9 @@ public:
 
     void initPrimitivesMenu();
 
+
+    TransferFunctionEditor *transEditor;
+
 public slots:
     void updateGL();
     void updateStatusBar();

A3/scene.cpp

@@ -122,9 +122,9 @@ void Scene::deletActive()
 
     int pos = active->childNumber();
     //qDebug()<<"Delet Active in Scene"<<parentIndex<<parent->childCount()<<pos;
-    foreach (SceneObject * t, parent->getChildren()) {
+    //foreach (SceneObject * t, parent->getChildren()) {
      //   qDebug()<<t->getName()<<t->childNumber();
-    }
+    //}
 
     beginRemoveRows(parentIndex, pos, pos);
     parent->remove(pos);

A3/sceneobject.cpp

@@ -2,7 +2,7 @@
 #include "scenenode.h"
 
 
-int SceneNode::idCount = 1;
+int SceneObject::idCount = 1;
 
 SceneObject::SceneObject()
 {