public FarseerObject(FarseerWorld world, Shape shape, BodyType BodyType = BodyType.Dynamic)
{
body = new Body(world.World);
body.BodyType = BodyType;
body.CreateFixture(shape);
body.Enabled = false;
}
public FarseerObject(FarseerWorld world, Vertices vertices, float density = 1, BodyType BodyType = BodyType.Dynamic)
{
Shape shape = new PolygonShape(vertices, density);
body = new Body(world.World);
body.BodyType = BodyType;
body.CreateFixture(shape);
body.Enabled = false;
}
public FarseerObject(FarseerWorld world, Texture2D texture, float density = 1, BodyType BodyType = BodyType.Dynamic, float colapseDistance = 4)
{
//Create an array to hold the data from the texture
uint[] data = new uint[texture.Width * texture.Height];
//Transfer the texture data to the array
texture.GetData(data);
//Find the vertices that makes up the outline of the shape in the texture
Vertices textureVertices = PolygonTools.CreatePolygon(data, texture.Width);
//The tool return vertices as they were found in the texture.
//We need to find the real center (centroid) of the vertices for 2 reasons:
//1. To translate the vertices so the polygon is centered around the centroid.
Vector2 centroid = -textureVertices.GetCentroid();
textureVertices.Translate(ref centroid);
//2. To draw the texture the correct place.
Origin = -centroid - new Vector2(texture.Width / 2, texture.Height / 2);;
//We simplify the vertices found in the texture.
textureVertices = SimplifyTools.ReduceByDistance(textureVertices, colapseDistance);
//Since it is a concave polygon, we need to partition it into several smaller convex polygons
List <Vertices> list = BayazitDecomposer.ConvexPartition(textureVertices);
//scale the vertices from graphics space to sim space
Vector2 vertScale = new Vector2(ConvertUnits.ToSimUnits(1));
foreach (Vertices vertices in list)
{
vertices.Scale(ref vertScale);
}
//Create a single body with multiple fixtures
body = BodyFactory.CreateCompoundPolygon(world.World, list, density, BodyType);
body.BodyType = BodyType;
body.CollisionCategories = Category.All;
body.CollidesWith = Category.All;
body.Enabled = false;
}
public FarseerObject(FarseerWorld world, IModelo2D model, float density = 1, BodyType BodyType = BodyType.Dynamic)
: this(world, model.Texture, density, BodyType)
{
}
