Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>I might be able to give you some beginner-to-beginner advice.</p> <p>I just learned how to make a model from <a href="http://xbox.create.msdn.com/en-US/education/catalog/sample/simple_animation" rel="nofollow">this example</a> and based on your quesiton I applied an additional scale transform to one of the bones to see if I could manipulate its size the same way I can its position, and it did work.</p> <p>So I'm implying the answer to your question may be that while a model's vertex data remains constant you can make it change shape using Scale transforms.</p> <p>Here's my model:</p> <pre><code>using Microsoft.Xna.Framework; using Microsoft.Xna.Framework.Content; using Microsoft.Xna.Framework.Graphics; namespace SimpleAnimation { public class Body { Model bodyModel; ModelBone headBone; ModelBone bodyBone; Matrix headTransform; Matrix bodyTransform; Matrix[] boneTransforms; public Body() { HeadScale = 1; } public void Load(ContentManager content) { // Load the tank model from the ContentManager. bodyModel = content.Load&lt;Model&gt;("body"); // Look up shortcut references to the bones we are going to animate. headBone = bodyModel.Bones["head"]; bodyBone = bodyModel.Bones["body"]; // Store the original transform matrix for each animating bone. headTransform = headBone.Transform; bodyTransform = bodyBone.Transform; // Allocate the transform matrix array. boneTransforms = new Matrix[bodyModel.Bones.Count]; } public void Draw(Matrix world, Matrix view, Matrix projection) { // Set the world matrix as the root transform of the model. bodyModel.Root.Transform = world; // Calculate matrices based on the current animation position. Matrix headRotation = Matrix.CreateRotationX(HeadRotation); Matrix headScale = Matrix.CreateScale(HeadScale); Matrix bodyRotation = Matrix.CreateRotationX(BodyRotation); // Apply matrices to the relevant bones. headBone.Transform = headScale * headRotation * headTransform; bodyBone.Transform = bodyRotation * bodyTransform; // Look up combined bone matrices for the entire model. bodyModel.CopyAbsoluteBoneTransformsTo(boneTransforms); // Draw the model. foreach (ModelMesh mesh in bodyModel.Meshes) { foreach (BasicEffect effect in mesh.Effects) { effect.World = boneTransforms[mesh.ParentBone.Index]; effect.View = view; effect.Projection = projection; effect.EnableDefaultLighting(); } mesh.Draw(); } } public float HeadRotation { get; set; } public float HeadScale { get; set; } public float BodyRotation { get; set; } } } </code></pre>
    singulars
    1. This table or related slice is empty.
    1. POCreate a model change shape in XNA 3D
      singulars
      1. PTQuestion
    1. PTAnswer
    1. This table or related slice is empty.
    1. USAaron Anodide
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POCreate a model change shape in XNA 3D
      singulars
      1. PTQuestion
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTAcceptedByOriginator
    1. COThanks Aaron Anodide very much. Can you share me sample code about one person moving. I know rotation and scale one model, but I don't know change its shape such as one person moving or stand up and sit down. Design model file(.fbx) is very hard too!
      singulars
      1. PO
      1. USHaiTrieu
    2. COI can't say for sure, but I believe a person moving would be the same thing, just using a Translation matrix to adjust the position of the model on the x/y/z axis... if you think about it, what part of a person moving, standing or sitting isn't a product of the transforms Rotation, Sclae and Translation?
      singulars
      1. PO
      1. USAaron Anodide
    3. COI'm trying to create elastic springs!!
      singulars
      1. PO
      1. USHaiTrieu
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload