RE: [cgmo-webcgm] WebCGMRect

["Bezaire, Benoit" <bbezaire@ptc.com>]

Yes chapter 5.

ECMAScript snippet, yes but after approval.

 

Benoit

---

From: Lofton Henderson [mailto:lofton@rockynet.com]
Sent: Monday, June 09, 2008 12:56 PM
To: Bezaire, Benoit; cgmo-webcgm@lists.oasis-open.org
Subject: Re: [cgmo-webcgm] WebCGMRect

Thanks Benoit.  

VENDORS especially, have a 
look at it before Wednesday.  (I think we need to discuss/endorse this at 
the Wednesday telecon.)

I have a couple of small questions of 
clarification -- from Editor's perspective -- before I could put it in the 
spec:

1.) where would you propose to put the WebCGMRect interface in 
Chapter 5?

2.) could you supply the Ch.8 ECMAScript bits?  (Maybe 
after we endorse the Ch.5 bits.)

Plus one comment/question:

3.) 
things like 'union' are convenience methods, yes?  To the question, "do we 
need more", I would ask another question:  to the implementors want the 
obligation of implementing more?

Regards,
-Lofton.

At 12:21 PM 
6/9/2008 -0400, Bezaire, Benoit wrote:

Here is the proposal for the WebCGMRect interface:
 
---
 
interface WebCGMRect {
    attribute float xll; // x coordinate of the lower left corner
    attribute float yll; // y coordinate of the lower left corner
    attribute float xur; // x coordinate of the upper right corner
    attribute float yur; // y coordinate of the upper right corner
 
    WebCGMRect union( in WebCGMRect r );
};
 
Methods
    union
                Computes the union of the current rectangle with the input rectangle r. Returns resulting new WebCGMRect
 
                Parameters
                        in WebCGMRect r. The rectangle used to calculate the union.
                Return value
                        WebCGMRect    The resulting rectangle.
                No Exceptions
 
 
 
Updated APIs...
 
WebCGMRect getObjectExtent()

Retrieves the bounding box rectangle of the Graphical Primitive elements within an APS. The bounding box calculation is based on the abstract locus of the primitives within the APS it is not affected by CGM Primitive Attribute (such as line width) or Control elements, nor by APS Attributes or Style Properties (except geometric transform). The rectangle is defined by two diametrically opposite corner points expressed in NVDC after the application of the Current Transformation Matrix.Parameters

No parameters.

Return value

WebCGMRect; the bounding rectangle of the APS, or null if the APS has no Graphical Primitive elements.

Exceptions

No exceptions.

 
Updated APIs...
 
setView
    Sets the view to the specified rectangle expressed in NVDC units.

WebCGMRect::union and WebCGMAppStructure::getObjectExtent can be used to set the view around more than one APS.Parameters

viewRect of type WebCGMRect

The view rectangle in NVDC.

Return value

No return value.

Exceptions

No exceptions.

Questions:
- do we need other methods on the WebCGMRect interface? see for example: http://java.sun.com/j2se/1.4.2/docs/api/java/awt/Rectangle.html
 
 

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