camera ByPoints is broken

Offline hUbS over 11 years ago

Hi,

This is a modification of the example camera by points script. The issue I am experiencing is that when I set...

UsePerspectiveView = false;

The Camera Eye and Target points are not maintained. This is evident in mstn 'Define Camera'...

transaction graphChange 'object for camera'
{
    feature User.Objects.point02 Bentley.GC.Features.Point
    {
        CoordinateSystem          = baseCS;
        XTranslation              = <free> (8.92207578546705);
        YTranslation              = <free> (-3.71891727133106);
        ZTranslation              = <free> (0.0);
    }
    feature User.Objects.solid01 Bentley.GC.Features.Solid
    {
        CoordinateSystemAtCentroid = baseCS;
        XDimension                = 3;
        YDimension                = 2;
        ZDimension                = 5;
    }
}

transaction graphChange 'create camera'
{
    feature User.Objects.camera01 Bentley.GC.Features.Camera
    {
        EyePoint                  = point02;
        TargetPoint               = baseCS;
        ViewNumber                = 5;
        UsePerspectiveView        = false;     <----------This causes EyePoint and TargetPoint to be not respected
    }
}

What works...

With "UsePerspectiveView = true;" .....

Correct Eye and Target Points in 'Define Camera' dialog...

------------------------------------------------------------------------------------------------------------

With "UsePerspectiveView = false;" .....

Camera Eye and Target are not maintained...

And in 'Define Camera'...

Eye and Target Points are incorrect...

In Both cases ( Perspective ON and OFF) the feature shows up red with the following Message Center errors...

Feature User.Objects.camera01 Camera.ByPoints failed: check validity of inputs
Camera User.Objects.camera01: unable to create cell camera_0_point

Despite this error, in the case of Perspective ON, the view gets generated correctly ( ...and Incorrectly in the case of Perspective OFF)

Also..

From help file on 'Camera Feature'...

Summary: Creates a Camera between an EyePoint and TargetPoint, with a defined ViewAngle and DisplayDepths

I can't see how the Display Depth is set with the camera feature. A 'Clip Volume' is not the same as 'Display Depth'

What I need is to control the 'FocalDistance' (Distance From the Camera's Eye to the Focal Point)

and Clip Distances (Front' and 'Back' - which are relative to the Focal Distance)

is this possible?

Any help appreciated.

Mike