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Merge pull request #3 from WardBenjamin/feature-camera/utils

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Camera utility features
This commit is contained in:
Dylan Wilson
2015-07-20 10:21:01 +10:00
parent 96e3551afa 5c6736e8b5
commit bcaf567da6
1 changed files with 56 additions and 1 deletions
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MonoGame.Extended/MonoGame.Extended/Camera2D.cs
+56 -1
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@@ -61,6 +61,61 @@ namespace MonoGame.Extended
public Matrix GetViewMatrix()
{
return GetViewMatrix(Vector2.One);
}
}
public Matrix GetInverseViewMatrix()
{
return Matrix.Invert(GetViewMatrix());
}
private Matrix GetProjectionMatrix(Matrix viewMatrix)
{
// Note: This projection matrix is the same one used inside of the MonoGame SpriteBatch by default.
Matrix projection = Matrix.CreateOrthographicOffCenter(0, _viewportAdapter.VirtualWidth, _viewportAdapter.VirtualHeight, 0, -1, 0);
// Half pixel offset.
projection.M41 += -0.5f * projection.M11;
projection.M42 += -0.5f * projection.M22;
Matrix.Multiply(ref viewMatrix, ref projection, out projection);
return projection;
}
public BoundingFrustum GetBoundingFrustum()
{
Matrix viewMatrix = GetViewMatrix();
return new BoundingFrustum(viewMatrix * GetProjectionMatrix(viewMatrix));
}
public bool Contains(Point point)
{
return GetBoundingFrustum().Contains(new Vector3(point.X, point.Y, 0)) != ContainmentType.Disjoint;
}
public bool Contains(Vector2 point)
{
return GetBoundingFrustum().Contains(new Vector3(point.X, point.Y, 0)) != ContainmentType.Disjoint;
}
public bool Contains(Rectangle rectangle)
{
return GetBoundingFrustum().Contains(new BoundingBox(new Vector3(0, 0, 0), new Vector3(15, 15, 0))) != ContainmentType.Disjoint;
}
public ContainmentType Contains(Point point)
{
return GetBoundingFrustum().Contains(new Vector3(point.X, point.Y, 0));
}
public ContainmentType Contains(Vector2 point)
{
return GetBoundingFrustum().Contains(new Vector3(point.X, point.Y, 0));
}
public ContainmentType Contains(Rectangle rectangle)
{
return GetBoundingFrustum().Contains(new BoundingBox(new Vector3(0, 0, 0), new Vector3(15, 15, 0)));
}
}
}