void Render::drawGrid() {
glDisable(GL_LINE_SMOOTH);
glBegin(GL_LINES);
for (int y = getBottomBound(); y <= getTopBound(); y++) {
if (y % 20 == 0)
glColor3f(1,0,0.5);
else
glColor3f(0.8,0.8,0.8);
glVertex2f(getLeftBound(), y);
glVertex2f(getRightBound(), y);
}
for (int x = getLeftBound(); x <= getRightBound(); x++) {
if (x % 100 == 0)
glColor3f(1,0,0.5);
else
glColor3f(0.8,0.8,0.8);
glVertex2f(x, getBottomBound());
glVertex2f(x, getTopBound());
}
glEnd();
glEnable(GL_LINE_SMOOTH);
}
void Render::resizeGL(const int nWidth, const int nHeight) {
int width = nWidth;
int height = nHeight? nHeight: 1;
glViewport(0, 0, width, height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
float aspectRatio = (float)width/height;
if (width <= height) {
setBounds(-viewRadius, viewRadius, -viewRadius/aspectRatio,
viewRadius/aspectRatio);
} else {
setBounds(-viewRadius*aspectRatio, viewRadius*aspectRatio,
-viewRadius, viewRadius);
}
glOrtho(getLeftBound(), getRightBound(), getBottomBound(), getTopBound(),
1.0, -1.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
updateGraph();
}
bool BoundingBox::overlaps(BoundingBox *other) {
return ( !(getUpperBound() > other->getLowerBound()) &&
!(getLowerBound() < other-> getUpperBound()) &&
!(getLeftBound() > other->getRightBound()) &&
!(getRightBound() < other->getLeftBound()) );
}