void eglSubWindow::RenderGLScene(void)
{
eglWindow::RenderGLScene();
glTranslatef(0.0f, 0.0f, -10.0f);
glColor3f(1.0f, 0.0f, 0.0f);
glPointSize(10.0f);
glBegin(GL_POINTS);
for(piter i=mPointList.begin(); i!=mPointList.end(); ++i)
{
glVertex3f((*i).x, (*i).y, (*i).z);
}
glEnd();
}
void eglSubWindow::OnLButtonDown(WPARAM wParam, LPARAM lParam)
{
GLfloat xPos = (GLfloat)(LOWORD(lParam));
GLfloat yPos = (GLfloat)(HIWORD(lParam));
GLfloat glX = ((xPos * (2*Range)) / ClientWidth) - Range;
GLfloat glY = ((yPos * (2*Range)) / ClientHeight) - Range;
mPointList.push_back(Point3D(glX, -glY, 0.0f));
TRACE("glVertex3f[ %f , %f , %f ]\n", glX, -glY, 0.0f);
}
void build_shapes(point_list& points, shape_map& shapes, unique_shapes& uniques) {
points.sort();
int x,y;
for (point_list::iterator it(points.begin()), end(points.end()); it != end; ++it) {
x = it->first;
y = it->second;
#ifdef DEBUG_BS
cerr << it->first << " " << it->second << endl;
#endif
int above = 0, left = 0;
// check top
if (y) // y-1 >= 0
above = field[x][y-1];
if (above) {
#ifdef DEBUG_BS
cerr << "shape above!" << endl;
#endif
// include this point into shape found above
field[x][y] = above;
shapes[above]->add(x, y);
}
// check left
if (x) //(x-1 >= 0)
left = field[x-1][y];
if (left) {
#ifdef DEBUG_BS
cerr << "shape on the left!" << endl;
#endif
if (above) {
if (shapes[above] != shapes[left]) {
//if (above != left) {
#ifdef DEBUG_BS
cerr << "combining!" << endl;
#endif
// there was a different shape above as well
// ==> fuse two shapes together
shapes[above]->combine(*shapes[left]);
// overwrite
shape* s = shapes[left];
uniques.erase(shapes[left]);
delete s;
shapes[left] = shapes[above];
}
} else {
// include this point into shape to the left
field[x][y] = left;
shapes[left]->add(x, y);
}
}
#ifdef DEBUG_BS
cerr << "above: " << above << " left: " << left << endl;
#endif
if (!above && !left) { // no adjacent shapes, create new one
shape* s = new shape(x,y);
uniques.insert(s);
field[x][y] = s->id;
shapes[s->id] = s;
}
}
}
