#include "Screen.h"
#include "screen/ScreenShape.h"

using namespace projection;

/**
 * Constructor.
 *
 * @param pScreen Screen data.
 */
ScreenShape::ScreenShape(Screen* pScreen)
{
    m_pScreen = pScreen;

    m_dlIndex = 0;
    m_bDirty = true;
}

/**
 * Destructor.
 */
ScreenShape::~ScreenShape()
{
    if (glIsList(m_dlIndex))
        glDeleteLists(m_dlIndex, 2);
}

/**
 * Draw the shape model in inherited class.
 *
 * @param bFrame True to draw a wire frame mesh. False to draw as a polygon model.
 */
void ScreenShape::draw(bool bFrame)
{
    // cache the model in display lists.

    // update screen shape model, if modified
    if (m_bDirty)
    {
        if (glIsList(m_dlIndex))
            glDeleteLists(m_dlIndex, 2);

        m_dlIndex = glGenLists(2);

        glNewList(m_dlIndex, GL_COMPILE);
        drawShape(false);
        glEndList();

        glNewList(m_dlIndex+1, GL_COMPILE);
        drawShape(true);
        glEndList();

        m_bDirty = false;
    }

    if (!bFrame)
        glCallList(m_dlIndex);
    else
        glCallList(m_dlIndex+1);
}

/**
 * Notify to redraw the screen shape.
 */
void ScreenShape::notifyRedraw()
{
    m_bDirty = true;

    m_pScreen->notifyRedraw();
}