public BoxOutline(BoundingBox boundingBox)
{
this.boundingBox = boundingBox;
if (boxBuffer == null)
{
boxBuffer = new DynamicVertexIndexBuffer <VertexPositionColor>();
var axis = new[] { Vector3.Right, Vector3.Up, Vector3.Backward };
for (int i = 0; i < 12; i++)
{
var color = Color.White;
var mainAxis = axis[i % 3];
var otherAxis = axis.Where(x => x != mainAxis).ToArray();
var offset = Vector3.Zero;
if (i / 3 % 2 == 1)
{
offset += otherAxis[0];
}
if (i / 3 / 2 == 1)
{
offset += otherAxis[1];
}
boxBuffer.AddVertices(new List <VertexPositionColor>()
{
new VertexPositionColor(offset, color)
});
boxBuffer.AddVertices(new List <VertexPositionColor>()
{
new VertexPositionColor(offset + mainAxis, color)
});
boxBuffer.AddIndices(new List <int>()
{
i * 2, i * 2 + 1
});
}
}
if (emptyBuffer == null)
{
emptyBuffer = new DynamicVertexIndexBuffer <VertexPositionColor>();
var axis = new[] { Vector3.Right, Vector3.Up, Vector3.Backward };
for (int i = 0; i < axis.Length; i++)
{
var color = Color.White;
emptyBuffer.AddVertices(new List <VertexPositionColor>()
{
new VertexPositionColor(-axis[i], color)
});
emptyBuffer.AddVertices(new List <VertexPositionColor>()
{
new VertexPositionColor(axis[i], color)
});
emptyBuffer.AddIndices(new List <int>()
{
i * 2, i * 2 + 1
});
}
}
}
public void RecalculateEverything()
{
if (buffer != null)
{
buffer.Dispose();
}
buffer = new DynamicVertexIndexBuffer <VertexPositionNormalTexture>();
int verticesAdded = 0;
foreach (var item in items)
{
var normal = CalculateNormal(item.Select(x => x.position).ToArray());
var vertices = item.Select(x => new VertexPositionNormalTexture(x.position, normal, new Vector2(0, 0))).ToList();
var indices = new List <int>();
for (int i = 0; i < item.Length - 2; i++)
{
indices.Add(verticesAdded);
indices.Add(verticesAdded + i + 1);
indices.Add(verticesAdded + i + 2);
}
buffer.AddVertices(vertices);
buffer.AddIndices(indices);
verticesAdded += vertices.Count();
}
}
public void RecalculateEverything()
{
if (buffer != null)
{
buffer.Dispose();
}
buffer = new DynamicVertexIndexBuffer <VertexPositionColor>();
Dictionary <VertexData, int> verticesAdded = new Dictionary <VertexData, int>();
foreach (var item in items)
{
foreach (var v in item)
{
if (!verticesAdded.ContainsKey(v))
{
buffer.AddVertices(new List <VertexPositionColor>()
{
new VertexPositionColor(v.position, v.color)
});
verticesAdded.Add(v, verticesAdded.Count);
}
}
var indices = item.Select(x => verticesAdded[x]).ToList();
buffer.AddIndices(indices);
}
}
public void RecalculateEverything()
{
if (buffer != null)
{
buffer.Dispose();
}
buffer = new DynamicVertexIndexBuffer <VertexPositionColorTexture>();
int verticesAdded = 0;
foreach (var item in items)
{
var vertices = new List <VertexPositionColorTexture>();
vertices.Add(new VertexPositionColorTexture(item.position, item.color, new Vector2(0, 0)));
vertices.Add(new VertexPositionColorTexture(item.position, item.color, new Vector2(1, 0)));
vertices.Add(new VertexPositionColorTexture(item.position, item.color, new Vector2(1, 1)));
vertices.Add(new VertexPositionColorTexture(item.position, item.color, new Vector2(0, 1)));
var indices = new List <int>();
indices.Add(verticesAdded * 4);
indices.Add(verticesAdded * 4 + 1);
indices.Add(verticesAdded * 4 + 2);
indices.Add(verticesAdded * 4);
indices.Add(verticesAdded * 4 + 2);
indices.Add(verticesAdded * 4 + 3);
buffer.AddVertices(vertices);
buffer.AddIndices(indices);
verticesAdded++;
}
}
public PlaneGrid()
{
int count = 0;
for (int i = -10; i <= 10; i++)
{
Color color = Color.White;
if (i == 0)
{
color = new Color(0, 0, 255); // z-axis
}
buffer.AddVertices(new List <VertexPositionColor>()
{
new VertexPositionColor(Vector3.Right * i + Vector3.Forward * 10, color)
});
buffer.AddVertices(new List <VertexPositionColor>()
{
new VertexPositionColor(Vector3.Right * i + Vector3.Backward * 10, color)
});
if (i == 0)
{
color = new Color(255, 0, 0); // x-axis
}
buffer.AddVertices(new List <VertexPositionColor>()
{
new VertexPositionColor(Vector3.Forward * i + Vector3.Right * 10, color)
});
buffer.AddVertices(new List <VertexPositionColor>()
{
new VertexPositionColor(Vector3.Forward * i + Vector3.Left * 10, color)
});
buffer.AddIndices(new List <int>()
{
count * 4, count * 4 + 1, count * 4 + 2, count * 4 + 3
});
count++;
}
// y-axis
buffer.AddVertices(new List <VertexPositionColor>()
{
new VertexPositionColor(Vector3.Up * 10, new Color(0, 255, 0))
});
buffer.AddVertices(new List <VertexPositionColor>()
{
new VertexPositionColor(Vector3.Down * 10, new Color(0, 255, 0))
});
buffer.AddIndices(new List <int>()
{
count * 4, count * 4 + 1
});
}