BUILD. RIDE. REPEAT.
Shape a section, try the bike, then come straight back to your drawing.
Quick guide & shortcuts
On a phone: pinch around the spot you want to enlarge. Two fingers move the view without changing points. Zoom here (Z) centers and enlarges one tapped spot, then returns to Move. Select a point to make the + and − buttons zoom around it. Point / save opens coordinates and saved-map controls on small screens.
Line / Curve: tap points in order. Escape or New section leaves a gap. Move: drag points, or drag empty space to pan. On desktop, double-click a section to insert a point. Delete removes the selected point.
Drag with Pan, the middle button, or hold Space. Scroll to zoom around the cursor. T tests; Escape returns to editing. R restarts a test.
The bike is drawn at its real size. Start places the wheels just above the clicked ground height. Finish sets the flag’s ground level; the upper bike point must be to its right and above it.
Tracks are solid from both sides. Crossing lines also collide. Leave openings for a loop’s entrance and exit.