void GLLogic::Init(void(*updateCallback)(int))
{
//param
m_updateCallback = updateCallback;
//glut
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);
glutInitWindowSize(800, 600);
glutInitWindowPosition(0, 0);
glutCreateWindow("Rotating Planets");
//cleaer
glClearColor(0.f, 0.f, 0.f, 1.f);
//culling
glEnable(GL_DEPTH_TEST);
glEnable(GL_CULL_FACE);
glFrontFace(GL_CCW);
//lighting
InitLighting();
//textures
glEnable(GL_TEXTURE_2D);
m_texIds[EARTH_IDX] = LoadTexture("Resources/earth.png");
m_texIds[VENUS_IDX] = LoadTexture("Resources/venus.png");
m_texIds[SILVA_IDX] = LoadTexture("Resources/silva.png");
//planets
for (int i = 0; i < PLANET_NUM; i++)
{
m_planets[i] = gluNewQuadric();
}
}
void init()
{
glClearColor(0,0,0,0);
glShadeModel(GL_FLAT);
s_transX = s_transY = 0.0;
s_rotX = s_rotY = 0.0;
s_focalDistance = 5;
InitLighting();
}
void OGL3DBase::SetStereoView(bool leftSide)
{
// clear any clip planes
ClearClipPlanes();
double eyeMult = 1.0 / (plot3Dbase.eyeSeparationDivisor * 2.0);
if (leftSide)
{
glDrawBuffer(GL_BACK_LEFT);
PerspectiveSetup(eyeMult);
}
else
{
glDrawBuffer(GL_BACK_RIGHT);
PerspectiveSetup(-eyeMult);
}
ClearBuffer();
InitLighting();
inAnnoView = false;
}
void MainWindowWrapper::SimuReshape(int width, int height)
{
glutPositionWindow(m_params.simu_window.x, m_params.simu_window.y);
glutReshapeWindow(m_params.simu_window.w, m_params.simu_window.h);
glViewport(0,0, m_params.simu_window.w, m_params.simu_window.h);
//this should rely on the map not the window
double y_max = sqrt(pow(m_params.simu_window.w,2) + pow(m_params.simu_window.h,2))/2.0;
if(y_max > 0.05 && y_max < (m_params.simu_window.w*m_params.simu_window.h))
m_DisplayParam.prespective_z = y_max;
m_DisplayParam.prespective_z = 10000;
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
double aspect_ratio = (double)m_params.simu_window.w/(double)m_params.simu_window.h;
gluPerspective(m_DisplayParam.prespective_fov,aspect_ratio,0.05,m_DisplayParam.prespective_z);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
if(m_DisplayParam.bDisplayMode == DISPLAY_FOLLOW && m_DrawAndControl)
{
m_DisplayParam.eye[0] = m_DisplayParam.centerRotX;
m_DisplayParam.eye[1] = m_DisplayParam.centerRotY;
m_DisplayParam.at[0] = m_DisplayParam.centerRotX;
m_DisplayParam.at[1] = m_DisplayParam.centerRotY;
}
gluLookAt(m_DisplayParam.eye[0], m_DisplayParam.eye[1], m_DisplayParam.zoom,
m_DisplayParam.at[0], m_DisplayParam.at[1], m_DisplayParam.at[2],
m_DisplayParam.up[0], m_DisplayParam.up[1],m_DisplayParam.up[2]);
InitLighting();
}
void OGL3DBase::InitView()
{
viewIsStereo = false;
ViewSetup();
// clear any clip planes
ClearClipPlanes();
int width, height;
plotBase.CalcAvailablePixels(width, height);
// set projection
if (plot3Dbase.ProjectionIsOrtho())
{
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
double aspect = double(width)/ double(height);
double maxMap = sqrt(xOrthoSpan * xOrthoSpan + yOrthoSpan * yOrthoSpan + zOrthoSpan * zOrthoSpan) / 2.0;
double maxZrange = -maxMap * currView.scale * 2.0;
if (aspect > 1.0)
glOrtho(-maxMap * aspect, maxMap * aspect, -maxMap, maxMap, maxZrange * 2.0, 0.0);
else
glOrtho(-maxMap, maxMap, -maxMap / aspect, maxMap / aspect, maxZrange * 2.0, 0.0);
// set initial translation/rotation
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
// shift into z range
glTranslated(0.0, 0.0, - maxZrange);
// attitude sliders
// scale
glScaled(currView.scale, currView.scale, currView.scale);
// rotation around azimuth
glRotated(currView.elevation -90.0, 1.0, 0.0, 0.0);
// azimuth around Z
glRotated(currView.azimuth, 0.0, 0.0, 1.0);
// shift centre
glTranslated(currView.translation.cX, currView.translation.cY, currView.translation.cZ);
// scale for normalizations
glScaled(xOrthoSpan / normSpan.cX, yOrthoSpan / normSpan.cY, zOrthoSpan / normSpan.cZ);
// translate again for normalizations
glTranslated(-normMid.cX, -normMid.cY, -normMid.cZ);
}
else
{
PerspectiveSetup(0.0);
}
glViewport(plotBase.plotUOffset + plotBase.leftMargin,
plotBase.plotVOffset + plotBase.bottomMargin, width, height);
//set scissors for clear
ScissorSetup();
// required for composite plots
HardCopySetViewport();
// clear viewport
Clear();
InitLighting();
inAnnoView = false;
}
