grid

helloqube/helloqube.pro.user

 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE QtCreatorProject>
-<!-- Written by QtCreator 3.5.1, 2015-11-23T17:08:38. -->
+<!-- Written by QtCreator 3.5.1, 2015-11-23T22:09:40. -->
 <qtcreator>
  <data>
   <variable>EnvironmentId</variable>

helloqube/mainwindow.cpp

@@ -220,6 +220,21 @@ MainWindow::MainWindow(QWidget *parent)
     }
 
 
+    gridSizeInput = new QSpinBox(toolBar);
+    gridSizeInput->setRange(0,100);
+    gridSizeInput->setValue(5);
+    toolBar->addWidget(gridSizeInput);
+    gridSizeInput->setToolTip("Grid Size");
+
+    gridStepInput = new QSpinBox(toolBar);
+    gridStepInput->setRange(1,10);
+    toolBar->addWidget(gridStepInput);
+    gridStepInput->setToolTip("Grid Step Size");
+
+    for(int i = 0; i < 4; i++){
+        connect(gridSizeInput,SIGNAL(valueChanged(int)),allWidgets[i],SLOT(setGridSize(int)));
+        connect(gridStepInput,SIGNAL(valueChanged(int)),allWidgets[i],SLOT(setGridStepSize(int)));
+    }
 
     qDebug("Done initializing");
 

helloqube/mainwindow.h

@@ -23,6 +23,7 @@
 #include <QDockWidget>
 #include <QLineEdit>
 #include <QInputDialog>
+#include <QSpinBox>
 class MainWindow : public QMainWindow
 {
     Q_OBJECT
@@ -92,6 +93,9 @@ private:
 
     QLineEdit* textInput;
 
+    QSpinBox* gridSizeInput;
+    QSpinBox* gridStepInput;
+
 public slots :
 void showAboutBox ( ) ;
 void showTextEditBox();

helloqube/myglwidget.cpp

@@ -21,6 +21,9 @@ MyGLWidget::MyGLWidget(int index, Controller* c, bool isPerspective, QQuaternion
 
     scene = controller->getSceneGraph();
     scene->registerView(this);
+
+    gridSize = 5;
+    gridStepSize = 1;
 }
 
 MyGLWidget::~MyGLWidget()
@@ -222,6 +225,8 @@ void MyGLWidget::paintGL(){
     glTranslatef(camRotCenter.x(),camRotCenter.y(),camRotCenter.z());
 //    scene->drawAll();
 
+    drawGrid();
+
     const QList<RigidBodyTransformation*> graph = scene->getGraph();
     QList<RigidBodyTransformation*>::const_iterator i;
     for (i = graph.begin(); i != graph.end(); ++i){
@@ -428,7 +433,6 @@ void MyGLWidget::drawBox(int tesselation){
 
     //4.1.1 Unit Qube + Tesselation + Diffuse Material
 
-
     GLfloat specularColor[] = { 1, 1, 1 };
     GLfloat shininess[] = { 128 };//specular exponent
     glMaterialfv(GL_FRONT, GL_SPECULAR, specularColor);
@@ -587,3 +591,68 @@ void MyGLWidget::drawTorus(int tesselation){
 
     glEnd();
 }
+
+void MyGLWidget::drawGrid(){
+    GLfloat specularColor[] = {0,0,0};
+    GLfloat shininess[] = {128};
+    glMaterialfv(GL_FRONT,GL_SPECULAR,specularColor);
+    glMaterialfv(GL_FRONT,GL_SHININESS, shininess);
+    GLfloat grey[] = {1,0.5,0.5};
+    glMaterialfv(GL_FRONT,GL_DIFFUSE,grey);
+    glNormal3f(0,1,0);
+
+    phongShader->release();
+
+    glDisable(GL_LIGHTING);
+    glEnable(GL_COLOR_MATERIAL);
+
+    glLineWidth(1);
+    glPolygonMode(GL_FRONT_AND_BACK,GL_LINES);
+    glBegin(GL_LINES);
+    float stepSize = gridStepSize;
+    float x = stepSize;
+    float y = stepSize;
+    if (stepSize <= 0) stepSize = 1;
+
+    for(; x < gridSize; x += stepSize){
+            glVertex3f(x,0,-gridSize);
+            glVertex3f(x,0,gridSize);
+            glVertex3f(-x,0,-gridSize);
+            glVertex3f(-x,0,gridSize);
+    }
+    for (; y < gridSize; y += stepSize){
+            glVertex3f(-gridSize, 0, y);
+            glVertex3f(gridSize,0,y);
+        glVertex3f(-gridSize,0,-y);
+        glVertex3f(gridSize,0,-y);
+    }
+    glEnd();
+
+    GLfloat red[] = {1,0,0};
+    glMaterialfv(GL_FRONT_AND_BACK,GL_DIFFUSE,red);
+    glBegin(GL_LINES);
+    glVertex3f(0,0,-gridSize);
+    glVertex3f(0,0,gridSize);
+    glEnd();
+    GLfloat green[] = {0,1,0};
+    glMaterialfv(GL_FRONT_AND_BACK,GL_DIFFUSE,green);
+    glBegin(GL_LINES);
+    glVertex3f(-gridSize,0,0);
+    glVertex3f(gridSize,0,0);
+    glEnd();
+
+
+    glPolygonMode(GL_FRONT,GL_FILL);
+    glEnable(GL_LIGHTING);
+    phongShader->bind();
+}
+
+void MyGLWidget::setGridSize(int size){
+    gridSize = size;
+    updateGL();
+}
+
+void MyGLWidget::setGridStepSize(int stepSize){
+    gridStepSize = stepSize;
+    updateGL();
+}

helloqube/myglwidget.h

@@ -102,9 +102,15 @@ private:
     void drawCylinder(int tesselation);
     void drawCone(int tesselation);
     void drawTorus(int tesselation);
+    void drawGrid();
+
+    int gridSize;
+    int gridStepSize;
 public slots:
     //4.1.1 slots for shading modes
     void resetCamera();
+    void setGridSize(int size);
+    void setGridStepSize(int stepSize);
 };
 
 #endif // GLWIDGET_H