private void RenderBodies()
{
var bodies = _engine.World.AllBodies.Where(x => x.Visible).ToList();
var parts = bodies.SelectMany(x => x.EnumParts().Where(y => y.Visible)).ToList();
if (_engine.Debug)
{
foreach (var body in bodies)
{
var bounds = body.Bounds.ToPointF();
_graphics.DrawPolygon(PenFactory.Get(Color.DarkGray), bounds);
}
}
foreach (var part in parts)
{
var vertices = part.Vertices.ToPointF();
_graphics.FillPolygon(BrushFactory.Get(part.Render.Fill), vertices);
_graphics.DrawPolygon(PenFactory.Get(part.Render.Stroke), vertices);
}
/*foreach (var part in parts)
* {
* foreach (var axis in part.Axes.Points)
* {
* _graphics.DrawLine(PenFactory.Get(Color.LightCyan),
* (float) part.Position.X, (float) part.Position.Y,
* (float) part.Position.X + 5f*(float) axis.X,
* (float) part.Position.Y + 5f*(float) axis.Y);
* }
* }*/
if (!_engine.Debug)
{
return;
}
foreach (var part in parts)
{
foreach (var axis in part.Axes.Points)
{
var first = part.Vertices.Vertexes.First();
var last = part.Vertices.Vertexes.Last();
_graphics.DrawLine(PenFactory.Get(Color.Salmon),
(float)part.Position.X, (float)part.Position.Y,
((float)first.X + (float)last.X) / 2f,
((float)first.Y + (float)last.Y) / 2f);
}
}
foreach (var part in parts)
{
_graphics.DrawArc(PenFactory.Get(Color.Indigo),
(float)part.Position.X - 1.5f, (float)part.Position.Y - 1.5f, 3f, 3f, 0f, 360f);
}
foreach (var body in bodies)
{
_graphics.DrawLine(PenFactory.Get(Color.CornflowerBlue),
(float)body.Position.X, (float)body.Position.Y,
(float)body.Position.X + 2f * (float)(body.Position.X - body.PositionPrev.X),
(float)body.Position.Y + 2f * (float)(body.Position.Y - body.PositionPrev.Y));
}
}
private void RenderCollisions()
{
if (!_engine.Debug)
{
return;
}
var pairs = _engine.Pairs.PairList.Where(x => x.Active).ToList();
foreach (var contact in pairs.SelectMany(x => x.ActiveContacts))
{
_graphics.DrawArc(PenFactory.Get(Color.BurlyWood), (float)contact.Vertex.X - 1.5f,
(float)contact.Vertex.Y - 1.5f, 3, 3, 0f, 360f);
}
foreach (var pair in pairs)
{
var contacts = pair.ActiveContacts;
if (contacts.Count > 0)
{
var normalPosX = contacts[0].Vertex.X;
var normalPosY = contacts[0].Vertex.Y;
if (contacts.Count == 2)
{
normalPosX = (normalPosX + contacts[1].Vertex.X) / 2d;
normalPosY = (normalPosY + contacts[1].Vertex.Y) / 2d;
}
var collision = pair.Collision;
if (collision.BodyB == collision.Supports.Vertexes[0].Body || collision.BodyA.Static)
{
_graphics.DrawLine(PenFactory.Get(Color.Chocolate),
(float)normalPosX - (float)collision.Normal.X * 8f,
(float)normalPosY - (float)collision.Normal.Y * 8f,
(float)normalPosX, (float)normalPosY);
}
else
{
_graphics.DrawLine(PenFactory.Get(Color.Chocolate),
(float)normalPosX + (float)collision.Normal.X * 8f,
(float)normalPosY + (float)collision.Normal.Y * 8f,
(float)normalPosX, (float)normalPosY);
}
}
}
/*foreach (var bucket in _engine.Buckets.Where(x => x.Value.Count > 1))
* {
* var id = bucket.Key.Split(',');
* var x = Math.Round(1.0 * int.Parse(id[0]));
* var y = Math.Round(1.0 * int.Parse(id[1]));
* _graphics.DrawRectangle(PenFactory.Get(bucket.Value.Count > 1 ? Color.DarkOliveGreen : Color.Olive),
* (float) x*(float) Engine.BucketSize.X,
* (float) y*(float) Engine.BucketSize.Y,
* (float) Engine.BucketSize.X,
* (float) Engine.BucketSize.Y);
* _graphics.DrawString(bucket.Value.Count.ToString(), _font,
* BrushFactory.Get(Color.DarkOliveGreen),
* (float) x*(float) Engine.BucketSize.X,
* (float) y*(float) Engine.BucketSize.Y);
* }*/
}