public void GeoCompositeRegion_Empty()
{
// Verify that empty regions don't barf.
var comp = new GeoCompositeRegion(new GeoRegion[0]);
Assert.IsFalse(comp.Contains(0, 0));
Assert.IsFalse(comp.Contains(10, 10));
}
public void GeoCompositeRegion_Additive()
{
GeoCompositeRegion comp;
// Create a composite region of two disjoint rectangles.
comp = new GeoCompositeRegion(
new GeoRegion[] {
new GeoRectangle(30, 30, 0, 0),
new GeoRectangle(30, -30, 0, -60)
});
Assert.IsTrue(comp.Contains(15, -45));
Assert.IsTrue(comp.Contains(15, 15));
Assert.IsFalse(comp.Contains(15, -15));
Assert.IsFalse(comp.Contains(45, 15));
Assert.IsFalse(comp.Contains(-15, -45));
// Create a composite region of two overlapping rectangles.
comp = new GeoCompositeRegion(
new GeoRegion[] {
new GeoRectangle(30, 30, 0, 0),
new GeoRectangle(15, 15, -15, -15)
});
Assert.IsTrue(comp.Contains(15, 15));
Assert.IsTrue(comp.Contains(0, 0));
Assert.IsFalse(comp.Contains(20, -5));
Assert.IsFalse(comp.Contains(-5, 20));
Assert.IsFalse(comp.Contains(0, -20));
// Create a composite region with an additive subregion that's also composite.
comp = new GeoCompositeRegion(
new GeoRegion[] {
new GeoCircle(80, 80, 10, GeoHelper.EarthRadiusMiles),
new GeoCompositeRegion(
new GeoRegion[] {
new GeoRectangle(30, 30, 0, 0),
new GeoRectangle(30, -30, 0, -60)
})
});
Assert.IsTrue(comp.Contains(80, 80));
Assert.IsTrue(comp.Contains(15, -45));
Assert.IsTrue(comp.Contains(15, 15));
Assert.IsFalse(comp.Contains(15, -15));
Assert.IsFalse(comp.Contains(45, 15));
Assert.IsFalse(comp.Contains(-15, -45));
}
public void GeoCompositeRegion_Subtractive()
{
GeoCompositeRegion comp;
// Create a composite region by making a rectangular hole in
// the middle of a rectangle.
comp = new GeoCompositeRegion(
new GeoRegion[] {
new GeoRectangle(30, 30, -30, -30)
},
new GeoRegion[] {
new GeoRectangle(15, 15, -15, -15)
});
Assert.IsFalse(comp.Contains(0, 0));
Assert.IsTrue(comp.Contains(20, 0));
Assert.IsTrue(comp.Contains(0, 20));
Assert.IsTrue(comp.Contains(-20, 0));
Assert.IsTrue(comp.Contains(0, -20));
}