no-wrap option; pivoted exponential zoom

client/world/renderer_circles_test.go

@@ -36,7 +36,7 @@ func TestDrawCirclesFromPlan_DuplicatesAcrossTilesAndClips(t *testing.T) {
 	require.NoError(t, err)
 
 	d := &fakePrimitiveDrawer{}
-	drawCirclesFromPlan(d, plan, w.W, w.H)
+	drawCirclesFromPlan(d, plan, w.W, w.H, true)
 
 	// Expect 4 circle copies, one per tile that covers the expanded canvas.
 	wantNames := []string{
@@ -118,7 +118,7 @@ func TestDrawCirclesFromPlan_SkipsTilesWithoutCircles(t *testing.T) {
 	require.NoError(t, err)
 
 	d := &fakePrimitiveDrawer{}
-	drawCirclesFromPlan(d, plan, w.W, w.H)
+	drawCirclesFromPlan(d, plan, w.W, w.H, true)
 
 	// No circles => no commands.
 	require.Empty(t, d.Commands())
@@ -149,7 +149,7 @@ func TestDrawCirclesFromPlan_ProjectsRadiusWithZoom(t *testing.T) {
 	require.NoError(t, err)
 
 	d := &fakePrimitiveDrawer{}
-	drawCirclesFromPlan(d, plan, w.W, w.H)
+	drawCirclesFromPlan(d, plan, w.W, w.H, true)
 
 	// There should be at least one AddCircle.
 	cmds := d.CommandsByName("AddCircle")
@@ -161,3 +161,39 @@ func TestDrawCirclesFromPlan_ProjectsRadiusWithZoom(t *testing.T) {
 		require.Equal(t, 4.0, c.Args[2])
 	}
 }
+
+func TestCircles_NoWrap_DoesNotDuplicateAcrossEdges(t *testing.T) {
+	t.Parallel()
+
+	w := NewWorld(10, 10)
+	w.resetGrid(2 * SCALE)
+
+	_, err := w.AddCircle(9, 9, 2)
+	require.NoError(t, err)
+	for _, obj := range w.objects {
+		w.indexObject(obj)
+	}
+
+	params := RenderParams{
+		ViewportWidthPx:  10,
+		ViewportHeightPx: 10,
+		MarginXPx:        0,
+		MarginYPx:        0,
+		CameraXWorldFp:   5 * SCALE,
+		CameraYWorldFp:   5 * SCALE,
+		CameraZoom:       1.0,
+		Options: &RenderOptions{
+			DisableWrapScroll: true,
+			Layers:            []RenderLayer{RenderLayerCircles},
+		},
+	}
+
+	d := &fakePrimitiveDrawer{}
+	require.NoError(t, w.Render(d, params))
+
+	cmds := d.CommandsByName("AddCircle")
+	require.Len(t, cmds, 1)
+
+	// Center must be at (9,9) only, no (-1,*) or (*,-1).
+	require.Equal(t, []float64{9, 9, 2}, cmds[0].Args)
+}