void ROrthoGrid::paintGridLines(const RVector& space, const RBox& box, bool meta) {
if (!space.isValid()) {
return;
}
// updates cache if necessary:
getProjection();
isIsometric();
RVector min = box.getCorner1();
RVector max = box.getCorner2();
double deltaX = max.x - min.x;
double deltaY = max.y - min.y;
if (deltaX / space.x > 1e3 || deltaY / space.y > 1e3) {
return;
}
double dx = deltaY / tan(M_PI/6);
if (isometric) {
min.x -= dx;
max.x += dx;
}
int c;
double x;
for (x=min.x, c=0; x<max.x; x+=space.x, c++) {
//int x2 = RMath::mround(x/space.x);
//if (!isometric || c%2==0) {
if (isometric) {
if (projection==RS::IsoTop || projection==RS::IsoRight) {
view.paintGridLine(RLine(RVector(x, min.y), RVector(x+dx, max.y)));
}
if (projection==RS::IsoTop || projection==RS::IsoLeft) {
view.paintGridLine(RLine(RVector(x, min.y), RVector(x-dx, max.y)));
}
// vertical grid lines:
if (projection==RS::IsoRight || projection==RS::IsoLeft) {
view.paintGridLine(RLine(RVector(x, min.y), RVector(x, max.y)));
view.paintGridLine(RLine(RVector(x-space.x/2, min.y), RVector(x-space.x/2, max.y)));
}
}
else {
view.paintGridLine(RLine(RVector(x, min.y), RVector(x, max.y)));
}
//}
}
// horizontal lines:
if (!isometric) {
for (double y=min.y; y<max.y; y+=space.y) {
view.paintGridLine(RLine(RVector(min.x, y), RVector(max.x, y)));
}
}
}
void ROrthoGrid::paintGridPoints(const RVector& space, const RBox& box) {
if (!space.isValid()) {
return;
}
RVector min = box.getCorner1();
RVector max = box.getCorner2();
if ((max.x - min.x) / space.x > 1e3 || (max.y - min.y) / space.y > 1e3) {
return;
}
RVector gridPointUcs;
int x, y;
for (gridPointUcs.x = min.x; gridPointUcs.x < max.x; gridPointUcs.x += space.x) {
x = RMath::mround(gridPointUcs.x/space.x);
for (gridPointUcs.y = min.y; gridPointUcs.y < max.y; gridPointUcs.y += space.y) {
y = RMath::mround(gridPointUcs.y/space.y);
if (!isometric || (x+y)%2==0) {
view.paintGridPoint(gridPointUcs);
}
}
}
}
