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gogodr
I post too much
 Reputation: 125
Joined: 19 Dec 2006
Posts: 2041
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 Posted: Fri Nov 13, 2009 2:49 am Post subject: |
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yep, after some hours I managed to understand it and apply it.
I pretty much recycled an example and fixed it to work with my solution.
this is pretty much it
| Code: |
private static bool RayIntersectsModel(Ray ray, GameObject gameobject)
{
foreach (ModelMesh mesh in gameobject.model.Meshes)
{
Matrix world = Matrix.CreateFromYawPitchRoll(
gameobject.rotation.Y,
gameobject.rotation.X,
gameobject.rotation.Z) *
Matrix.CreateScale(gameobject.scale) *
Matrix.CreateTranslation(gameobject.position);
BoundingSphere sphere =
TransformBoundingSphere(mesh.BoundingSphere, world);
if (sphere.Intersects(ray) != null)
{
return true;
}
}
return false;
}
private static BoundingSphere TransformBoundingSphere(BoundingSphere sphere,
Matrix transform)
{
BoundingSphere transformedSphere;
Vector3 scale3 = new Vector3(sphere.Radius, sphere.Radius, sphere.Radius);
scale3 = Vector3.TransformNormal(scale3, transform);
transformedSphere.Radius = Math.Max(scale3.X, Math.Max(scale3.Y, scale3.Z));
transformedSphere.Center = Vector3.Transform(sphere.Center, transform);
return transformedSphere;
}
public Ray CalculateCursorRay(Matrix projectionMatrix, Matrix viewMatrix)
{
Vector3 nearSource = new Vector3(cursorstate.X, cursorstate.Y, 0f);
Vector3 farSource = new Vector3(cursorstate.X, cursorstate.Y, 1f);
Vector3 nearPoint = GraphicsDevice.Viewport.Unproject(nearSource,
projectionMatrix, viewMatrix, Matrix.Identity);
Vector3 farPoint = GraphicsDevice.Viewport.Unproject(farSource,
projectionMatrix, viewMatrix, Matrix.Identity);
Vector3 direction = farPoint - nearPoint;
direction.Normalize();
return new Ray(nearPoint, direction);
}
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Odecey
Master Cheater
 Reputation: 1
Joined: 19 Apr 2007
Posts: 259
Location: Scandinavia
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| Posted: Fri Nov 13, 2009 3:05 am Post subject: |
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I'm surprised you didn't get an IndexOutOfRange exception with your previous code, considering alot of the indexes you tried to set are outside the bounds of the array.
_________________
Never confuse activity with productivity. You can be busy without a purpose, but what's the point?- Rick Warren |
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gogodr
I post too much
Reputation: 125
Joined: 19 Dec 2006
Posts: 2041
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| Posted: Fri Nov 13, 2009 3:09 am Post subject: |
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| Odecey wrote: | | I'm surprised you didn't get an IndexOutOfRange exception with your previous code, considering alot of the indexes you tried to set are outside the bounds of the array. |
I did at first xP because I seted up the array with this limits [10,11]
then I realised that to use [10,y] or [x,11] I needed the limits at [11,12]
___________
the problem was fixed xP
I'll post updates of my code in the game development section, also a demo of the game as soon as I finish enough to make a semi playable demo.
right now I'm uploading a video on the current interface.
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Fendaril
Cheater
![]() Reputation: 0
Joined: 08 Nov 2009
Posts: 27
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| Posted: Fri Nov 13, 2009 7:15 pm Post subject: |
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For those of you saying "use a loop OMG" you didnt take into consideration that the vector3 constructor for each index of the array is created differently.......
Cell[9, 9].position = new Vector3(41f, 0.1f, -30.3f);
Cell[9, 10].position = new Vector3(56.75f, 0.1f, -40.3f);
Cell[9, 11].position = new Vector3(41f, 0.1f, -50.3f);
are not the same. Hence a loop is actually counter productive.
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hcavolsdsadgadsg
I'm a spammer
![]() Reputation: 26
Joined: 11 Jun 2007
Posts: 5801
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| Posted: Fri Nov 13, 2009 8:52 pm Post subject: |
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| Fendaril wrote: | For those of you saying "use a loop OMG" you didnt take into consideration that the vector3 constructor for each index of the array is created differently.......
Cell[9, 9].position = new Vector3(41f, 0.1f, -30.3f);
Cell[9, 10].position = new Vector3(56.75f, 0.1f, -40.3f);
Cell[9, 11].position = new Vector3(41f, 0.1f, -50.3f);
are not the same. Hence a loop is actually counter productive. |
i'm rolling my eyes irl
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gogodr
I post too much
Reputation: 125
Joined: 19 Dec 2006
Posts: 2041
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| Posted: Fri Nov 13, 2009 9:17 pm Post subject: |
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| Fendaril wrote: | For those of you saying "use a loop OMG" you didnt take into consideration that the vector3 constructor for each index of the array is created differently.......
Cell[9, 9].position = new Vector3(41f, 0.1f, -30.3f);
Cell[9, 10].position = new Vector3(56.75f, 0.1f, -40.3f);
Cell[9, 11].position = new Vector3(41f, 0.1f, -50.3f);
are not the same. Hence a loop is actually counter productive. |
its not that hard to transform all that code in a Loop
there is a tendency but I got the values and code like that on a debug.. and making it a loop or not doesn't really affect the processing so I'm leaving it in the big code.
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