Hi all,
To make it short: hibernate doesn't support projections and query by example? I found this post:
The code is this:
User usr = new User();
usr.setCity = 'TEST';
getCurrentSession().createCriteria(User.class)
.setProjection( Projections.distinct( Projections.projectionList()
.add( Projections.property("name"), "name")
.add( Proj...

I have 3 points in 3d space. I know the exact locations of them. Suppose they are (x0,y0,z0) (x1,y1,z1) (x2,y2,z2)
Also i have a camera that are looking at these 3 points and i know the 2d locations of those three points on camera view plane. So for example (x0,y0,z0) will be (x0',y0') and (x1,y1,z1) will be (x1',y1') and (x2,y2,z2) wil...

Hello! I am working on a 2D game using OpenGL ES. I am using the orthographic projection, since it makes the 2D stuff easy. Now I would like to create a simple 3D effect, say rotate a sprite around the Y axis (something like cover flow). If I understand things correctly, this can’t be done in the ortho projection. Is it possible to do it...

I'm in the midst of writing a 3d engine and I've come across the LookAt algorithm described in the DirectX documentation:
zaxis = normal(At - Eye)
xaxis = normal(cross(Up, zaxis))
yaxis = cross(zaxis, xaxis)
xaxis.x yaxis.x zaxis.x 0
xaxis.y yaxis.y zaxis.y 0
xaxis.z ...

rowCount returns 0 when query.SetFirstResult is different from 0 ?
if the result of pageIndex x pageSize = 0 // it gives me the rowCount but when it is not equal to 0, countCriteria gives me 0 instead of rowCount.
What can i do ?
Thanks in advance
...

What is the simplest way to un-warp a photo made using fisheye or wide-angle lens? I'm looking a pixel projection formula that has few parameters. Camera and lens parameters will not be known, so user has to change the parameters visually. Thanks
...

Hello everybody. I have the following problem which is mainly algorithmic.
Let ABCD be a rectangle with known dimensions d1, d2 lying somewhere in space.
The rectangle ABCD is projected on a plane P (forming in the general case a trapezium KLMN). I know the projection matrix H.
I can also find the 2D coordinates of the trapezium edge p...

I've been playing a bit with the new flash 10 3d possibilities, and found out that rotating a sprite in 3d is fairly easy:
var card:Sprite = new MyCard()
card.x = 100
card.y = 100
card.z = 200
card.rotationX = -60
addChild(card)
Simple and effective, this shows the card rotated with perspective.
Now I want to use an orthographic proj...

I've been looking around a bit and can't seem to find just what I"m looking for. I've found "canonical formulas," but what's the best way to use these? Do I have to scale every single vertex down? Or is there a better way?
A formula would really help me out, but I'm also looking for an explanation about the near and far z planes relativ...

Hey,
I wish to determine the 2D screen coordinates (x,y) of points in 3D space (x,y,z).
The points I wish to project are real-world points represented by GPS coordinates and elevation above sea level.
For example:
Point (Lat:49.291882, Long:-123.131676, Height: 14m)
The camera position and height can also be determined as a x,y,z poi...

Hello,
I am unfamiliar with NHibernate projection. I am attempting to use it so I can return a List<> rather that an IList<>. I am not having much luck with projecting to the DTO as of yet. I have the following query and Domain objects. So to begin I am just trying to get a list of Orders given an EmployeeID. I am looping through the re...

Hey,
I am trying to get the 2D screen coordinates of a point in 3D space, i.e. I know the location of the camera its pan, tilt and roll and I have the 3D x,y,z coordinates of a point I wish to project.
I am having difficulty understanding transformation/projection matrices and I was hoping some intelligent people here could help me alo...

I have a pretty standard Orders table and an associated OrderRows table, say:
Orders
[id] INTEGER
[name] ...
OrderRows
[orderId] INTEGER
[quantity] INTEGER
[unitPrice] SMALLMONEY
[description] VARCHAR(...)
For some situations I would like to retrieve a list of Orders together with a summary of totals, most of the time I don't care fo...

Hello there, Im having a problem creating a projection for my nhibernate detachedcriteria object.
I have a class Spa which is linked to table Address.
Address has a field called City which is a string.
public class Spa : IAggregateRoot
{
[BelongsTo("AddressID", Cascade = CascadeEnum.All)]
public Address Address { ge...

I have a property in my XML mapping file like
<property name="CreatedByLogin" formula="(select x.fst_name || ' ' || x.last_name from sebl_dev.S_CONTACT x where x.ROW_ID=CREATED_BY)" type="String" />
and I want to use a projection on this particular name like
.Add(Projections.Property("CreatedByLogin"), "CreatedByLogin")
and I do g...

The following code:
var m: Map[String, Int] = Map("A" -> 1, "BB" -> 2, "CCC" -> 3)
m = m filterKeys { s => s.length < 3 }
Does not compile. I get the following error:
error: type mismatch
found: collection.this.Map.Projection[scala.this.Predef.String,scala.this.Int]
required: collection.this.Map[scala.this.Predef.String,scala...

HI I have a table with some some values (IDs), and of course when i get the result i got just the int IDs, but i want to put it more user friendly, for example when its the number 1, i want to put the string "Avaible", when its 2 "Not avaible", im on an N tiers enviroment and i need to get this done on the Model, whats the best way to a...

Hi,
Given: A 3d mesh defined with a set of vertices and triangles building up the mesh with these points.
Problem: Find the 2d outline of the projected arbitrarily rotated mesh on an arbitrary plane.
The projection is easy. The challenge lies in finding the "hull" of the projected triangle edges in the plane. I need some help with inp...

Example. I have an XML document:
<document>
<region type="type1">text of region1
</region>
some simple text
<region type="type2">text of region2
</region>
And I want it to be presented as
text of region1
some simple text
text of region2
The basic Eclipse coloring works independent from folding, as I know. But I need text to be c...

Hello,
I am a newbie in OpenGL programming with C++ and not very good at mathematics. Is there a simple way to have isometric projection?
I mean the true isometric projection, not the general orthogonal projection.
(Isometric projection happens only when projections of unit X, Y and Z vectors are equally long and angles between them a...