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Re: [Fwd: Re: [libredwg] AUTOCAD Info]


From: guruprasad rane
Subject: Re: [Fwd: Re: [libredwg] AUTOCAD Info]
Date: Wed, 20 Jan 2010 12:07:46 +0530

5. How many LAYER_CONTROL objects can we find within a file?

LINE
RAY
CONSTRUCTION LINE
MULTILINE
POLYLINE
3D POLYLINE
POLYGON
RECTANGLE
ARC
CIRCLE
DONUT
SPLINE
ELIPSE

BLOCK
ATTRIBUTES
TABLE
POINT

HATCH
GRADIENT HATCH
BOUNDARY
REGION

MTEXT
TEXT

SURFACES
SOLID - BOX
SOLID - SPHERE
SOLID - CYLINDER
SOLID - CONE
SOLID - WEDGE
SOLID - TORUS

DIMENSION - LINEAR
DIMENSION - ALIGNED
DIMENSION - ARC LENGTH
DIMENSION - ORDINATE
DIMENSION - RADIAL
DIMENSION - JOGGED
DIMENSION - DIAMETERIC
DIMENSION - ANGULAR

LEADER

THERE MIGHT BE FEW MORE, I WILL LET YOU KNOW WHEN I FIND THEM...

2010/1/20 Rodrigo Rodrigues da Silva <address@hidden>
Thanks!


-------- Original Message --------
Subject:        Re: [libredwg] AUTOCAD Info
Date:   Wed, 20 Jan 2010 11:42:35 +0530
From:   guruprasad rane <address@hidden>
To:     Rodrigo Rodrigues da Silva <address@hidden>
References:     <address@hidden> <address@hidden>



1. What is a MTEXT? Is it different from a TEXT?
MTEXT is mutliline text. It support formatting features like bold, italics, underline, left-center-right align, top-middle-bottom align, tabs, numbering, letter-spacing, font-angle(obliquing), font-stretching (width factor),etc. Different formating features can be applied to different part of MTEXT (ie. first few words in bold, next few in italics) Above this we can format test using text styles.

TEXT is single line text. If you need text with two line we need to create two seperate TEXT. It supports left-center-right, width factor and obliquing. But these features need to be applied to the whole text. We can not have different formatting to different parts of TEXT.

2. What is a viewport?
Viewport is the rectangle window through which we see the graphics. Say the black screen on which we can see a circle or click on the viewport to start drawing a line. We can create multiple viewports at a time. Each viewport can be assigned a direction like top, bottom, left, right, front, back, isometeric, perspective etc. So we can see a cube from top in top view port, from left fem left viewport etc.


Remaining questions I will answer later. If needed I can send snapshots of these items..

Regards
Guruprasad


2010/1/20 Rodrigo Rodrigues da Silva <address@hidden <mailto:address@hidden>>



      I can program somewhat but i have very good understanding about
      AUTOCAD,
      I have used AUTOCAD for around 12years. I know the software in
      and out.
      So feel free to ask me questions about it.


  Do you have any understanding on the internals?

  Can you answer any of these questions:

  1. What is a MTEXT? Is it different from a TEXT?
  2. What is a viewport?
  3. What is a VP_HDR_CTRL_OBJ?
  4. What is an APPID?
  5. How many LAYER_CONTROL objects can we find within a file?
  6. What is an XRECORD?







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