// test for bounding box function
public static void bbox_test(GLWindow g)
{
// draw a triangle
Geo.Point p1 = new Geo.Point(0.1, 0.1, 0);
Geo.Point p2 = new Geo.Point(0.8, 0.3, 0);
Geo.Point p3 = new Geo.Point(0.2, 0.6, 0);
GeoLine l1 = new GeoLine(p1, p2);
GeoLine l2 = new GeoLine(p1, p3);
GeoLine l3 = new GeoLine(p3, p2);
l1.color = System.Drawing.Color.RoyalBlue;
l2.color = System.Drawing.Color.RoyalBlue;
l3.color = System.Drawing.Color.RoyalBlue;
g.addGeom(l1);
g.addGeom(l2);
g.addGeom(l3);
// create triangle and calculate bounding box
Geo.Tri t = new Geo.Tri(p1, p2, p3);
t.calc_bbox();
Geo.Point a = new Geo.Point(t.bb.minx, t.bb.miny, 0);
Geo.Point b = new Geo.Point(t.bb.maxx, t.bb.miny, 0);
Geo.Point c = new Geo.Point(t.bb.maxx, t.bb.maxy, 0);
Geo.Point d = new Geo.Point(t.bb.minx, t.bb.maxy, 0);
GeoLine h1 = new GeoLine(a, b);
GeoLine h2 = new GeoLine(b, c);
GeoLine h3 = new GeoLine(c, d);
GeoLine h4 = new GeoLine(d, a);
h1.color = System.Drawing.Color.Red;
h2.color = System.Drawing.Color.Red;
h3.color = System.Drawing.Color.Red;
h4.color = System.Drawing.Color.Red;
g.addGeom(h1);
g.addGeom(h2);
g.addGeom(h3);
g.addGeom(h4);
// check that the points are OK
GeoPoint v1 = new GeoPoint(t.bb.minx, t.bb.miny, 0);
v1.color = System.Drawing.Color.Green;
g.addGeom(v1);
GeoPoint v2 = new GeoPoint(t.bb.maxx, t.bb.maxy, 0);
v2.color = System.Drawing.Color.Azure;
g.addGeom(v2);
}
// testing that the isinside function works OK
public static void isinside_test(GLWindow g)
{
Random r = new Random();
// generate lots of random points
int N = 100;
List<GeoPoint> points = new List<GeoPoint>();
for (int n = 0; n < N; n++)
{
GeoPoint p = new GeoPoint(0.001 * (float)r.Next(0, 1000), 0.001 * (float)r.Next(0, 1000), 0);
points.Add(p);
}
// draw a triangle
Geo.Point p1 = new Geo.Point(0.1, 0.1, 0);
Geo.Point p2 = new Geo.Point(0.8, 0.1, 0);
Geo.Point p3 = new Geo.Point(0.2, 0.6, 0);
GeoLine l1 = new GeoLine(p1, p2);
GeoLine l2 = new GeoLine(p1, p3);
GeoLine l3 = new GeoLine(p3, p2);
l1.color = System.Drawing.Color.RoyalBlue;
l2.color = System.Drawing.Color.RoyalBlue;
l3.color = System.Drawing.Color.RoyalBlue;
g.addGeom(l1);
g.addGeom(l2);
g.addGeom(l3);
// p.color = System.Drawing.Color.Aqua;
// draw points
Geo.Tri t = new Geo.Tri(p2, p3, p1);
foreach (GeoPoint p in points)
{
if (DropCutter.isinside(t,p.p))
p.color = System.Drawing.Color.Aqua;
else
p.color = System.Drawing.Color.Red;
g.addGeom(p);
}
}
private void geoPointToolStripMenuItem_Click(object sender, EventArgs e)
{
//System.Console.Write("adding GeoPoint!: ");
GeoPoint p = new GeoPoint((double)RandomNumber(-10, 10), (double)RandomNumber(-10, 10), (double)RandomNumber(-10, 10));
System.Console.WriteLine(p);
p.color = System.Drawing.Color.Green;
addGeom(p);
}