placement.cpp

This is an example of how to position objects in a scene. Using both primitives and CIvfComposite classes.

// ------------------------------------------------------------
//
// Ivf++ Object placement/rotation sample
//
// ------------------------------------------------------------
//
// Author: Jonas Lindemann
//

// ------------------------------------------------------------
// Include files
// ------------------------------------------------------------

#include <ivfui/IvfApplication.h>
#include <ivfui/IvfWindow.h>

#include <ivf/IvfCamera.h>
#include <ivf/IvfCube.h>
#include <ivf/IvfSphere.h>
#include <ivf/IvfCylinder.h>
#include <ivf/IvfCone.h>
#include <ivf/IvfAxis.h>
#include <ivf/IvfComposite.h>
#include <ivf/IvfLighting.h>
#include <ivf/IvfLight.h>
#include <ivf/IvfMaterial.h>

// ------------------------------------------------------------
// Window class definition
// ------------------------------------------------------------

IvfSmartPointer(CExampleWindow);

class CExampleWindow: public CIvfWindow {
private:

        // Camera movement state variables

        int m_beginX;
        int m_beginY;

        double m_angleX;
        double m_angleY;
        double m_moveX;
        double m_moveY;
        double m_zoomX;
        double m_zoomY;

        CIvfCameraPtr           m_camera;
        CIvfCompositePtr        m_scene;
        CIvfLightPtr            m_light;
public:
        CExampleWindow(int X, int Y, int W, int H)
                :CIvfWindow(X, Y, W, H) {};

        virtual void onInit(int width, int height);
        virtual void onResize(int width, int height);
        virtual void onRender();

        // Mouse event methods

        virtual void onMouseDown(int x, int y);
        virtual void onMouseMove(int x, int y);
        virtual void onMouseUp(int x, int y);
};

// ------------------------------------------------------------
// Window class implementation
// ------------------------------------------------------------

void CExampleWindow::onInit(int width, int height)
{
    // State variables

    m_angleX = 0.0f;
    m_angleY = 0.0f;
    m_moveX = 0.0f;
    m_moveY = 0.0f;
    m_zoomX = 0.0f;
    m_zoomY = 0.0f;

        // Initialize Ivf++ camera

        m_camera = new CIvfCamera();
        m_camera->setPosition(0.0, 4.0, 9.0);
        m_camera->setPerspective(45.0, 0.1, 100.0);

        // Create a materials

        CIvfMaterialPtr redMaterial = new CIvfMaterial();
        redMaterial->setDiffuseColor(1.0f, 0.0f, 0.0f, 1.0f);
        redMaterial->setSpecularColor(1.0f, 1.0f, 1.0f, 1.0f);
        redMaterial->setAmbientColor(0.5f, 0.0f, 0.0f, 1.0f);

        CIvfMaterialPtr greenMaterial = new CIvfMaterial();
        greenMaterial->setDiffuseColor(0.0f, 1.0f, 0.0f, 1.0f);
        greenMaterial->setSpecularColor(1.0f, 1.0f, 1.0f, 1.0f);
        greenMaterial->setAmbientColor(0.0f, 0.5f, 0.0f, 1.0f);
        
        CIvfMaterialPtr blueMaterial = new CIvfMaterial();
        blueMaterial->setDiffuseColor(0.0f, 0.0f, 1.0f, 1.0f);
        blueMaterial->setSpecularColor(1.0f, 1.0f, 1.0f, 1.0f);
        blueMaterial->setAmbientColor(0.0f, 0.0f, 0.5f, 1.0f);

        CIvfMaterialPtr yellowMaterial = new CIvfMaterial();
        yellowMaterial->setDiffuseColor(1.0f, 1.0f, 0.0f, 1.0f);
        yellowMaterial->setSpecularColor(1.0f, 1.0f, 1.0f, 1.0f);
        yellowMaterial->setAmbientColor(0.5f, 0.5f, 0.0f, 1.0f);

        // Create scene composite

        m_scene = new CIvfComposite();

        // Create objects
        
        CIvfCubePtr cube = new CIvfCube();
        cube->setMaterial(redMaterial);
        cube->setPosition(2.0, 0.0, 2.0);
        m_scene->addChild(cube);

        CIvfSpherePtr sphere = new CIvfSphere();
        sphere->setMaterial(greenMaterial);
        sphere->setPosition(-2.0, 0.0, 2.0);
        m_scene->addChild(sphere);

        CIvfCylinderPtr cylinder = new CIvfCylinder();
        cylinder->setMaterial(blueMaterial);
        cylinder->setPosition(-2.0, 0.0, -2.0);
        m_scene->addChild(cylinder);

        CIvfConePtr cone = new CIvfCone();
        cone->setMaterial(yellowMaterial);
        cone->setPosition(2.0, 0.0, -2.0);
        cone->setRotationQuat(0.0, 0.0, 1.0, 45.0);
        m_scene->addChild(cone);

        CIvfAxisPtr axis = new CIvfAxis();
        m_scene->addChild(axis);
        
        // Create a light

        CIvfLightingPtr lighting = CIvfLighting::getInstance();

        m_light = lighting->getLight(0);
        m_light->setLightPosition(1.0, 1.0, 1.0, 0.0);
        m_light->setAmbientColor(0.2f, 0.2f, 0.2f, 1.0f); 
        m_light->enable();
}

// ------------------------------------------------------------
void CExampleWindow::onResize(int width, int height)
{
        m_camera->setViewPort(width, height);
        m_camera->initialize();
}

// ------------------------------------------------------------
void CExampleWindow::onRender()
{
        m_light->render();
        m_camera->render();
        m_scene->render();
}

// ------------------------------------------------------------
void CExampleWindow::onMouseDown(int x, int y)
{
        m_beginX = x;
        m_beginY = y;
}

// ------------------------------------------------------------
void CExampleWindow::onMouseMove(int x, int y)
{
    m_angleX = 0.0;
    m_angleY = 0.0;
    m_moveX = 0.0;
    m_moveY = 0.0;
    m_zoomX = 0.0;
    m_zoomY = 0.0;
        
    if (this->isLeftButtonDown())
    {
        m_angleX = (x - m_beginX);
        m_angleY = (y - m_beginY);
        m_beginX = x;
        m_beginY = y;
                
                m_camera->rotatePositionY(m_angleX/100.0);
                m_camera->rotatePositionX(m_angleY/100.0);
                
        this->redraw();
    }

    if (this->isRightButtonDown())
    {
                if (this->getModifierKey()==CIvfWidgetBase::MT_SHIFT)
                {
            m_zoomX = (x - m_beginX);
            m_zoomY = (y - m_beginY);
        }
        else
        {
            m_moveX = (x - m_beginX);
            m_moveY = (y - m_beginY);
        }

        m_beginX = x;
        m_beginY = y;

                m_camera->moveSideways(m_moveX/100.0);
                m_camera->moveVertical(m_moveY/100.0);
                m_camera->moveDepth(m_zoomY/50.0);
                
        this->redraw();
    }
}

// ------------------------------------------------------------
void CExampleWindow::onMouseUp(int x, int y)
{
        m_angleX = 0.0;
        m_angleY = 0.0;
        m_moveX = 0.0;
        m_moveY = 0.0;
        m_zoomX = 0.0;
        m_zoomY = 0.0;
}

// ------------------------------------------------------------
// Main program
// ------------------------------------------------------------

int main(int argc, char **argv) 
{
        // Create Ivf++ application object.

        CIvfApplicationPtr app = new CIvfApplication(IVF_DOUBLE|IVF_RGB);

        // Create a window

        CExampleWindowPtr window = new CExampleWindow(0, 0, 512, 512);

        // Set window title and show window

        window->setWindowTitle("Ivf++ Object placement example");
        window->show();

        // Enter main application loop

    app->run();

        return 0;
}

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