Thanks Vesa : To me , your mail explains a lot . Thank you very much . Still , I am curious about how others have been working with RS ... but not it's not that important .
I'll continue working with RS as I always have and when I upgrade I'll see if I can 'expand' a little bit . Cheers and thanks again for your time . studio www.niagara.com/~studio www.studiodynamics.net ----- Original Message ----- From: "Vesa Meskanen" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Wednesday, February 08, 2006 3:06 AM Subject: Re: How 'big' is your viewport window > Hi, > > Some notes regarding the scale of modelling: > > - Rendering accuracy is best when the diameter of the scene is about 1 > meter, but real world scale should work fine for most > projects. Some analytic primitives precompute high powers of the dimensions > of geometry to optimize and speed up rendering. This makes computations > inaccurate. Even double precision floats are not enough when you examine a > detail on a surface of of a real-world scaled globe sphere. > > - The dynamic clipping of the perspective ground plane by drawing density > works badly in large scale models. Increasing the default density of the > ground grid from 0.5 meters to say 5 meters makes landscape modeling more > comfortable. Currently the density is a defined in preferences (Asynchronous > Drawing/Window Drawing/GroundDensity), and you have to restart the program > after changing the setting, which is inconvenient. We will make it a regular > view property in upcoming versions. > > - Defining a proper native state for the view is recommended for unusual > model scales: a proper clipping range say 1...10000 meters instead of > 0.01...100 m, distance = 100 m etc. Also decimals are important because they > eat up the available dynamical range. So, set clip start to one meter > instead of 0.01 meters for large models. Drag-dropping a geometry item to > view does not increase the lower limit of the clip range, only the upper one > if necessary. > > - There is one inconvenient issue when working with big models. Camera > object's 'front frame' defines its field of view. The front frame is > typically placed 1 meter in front of the camera position. This means that > when you switch from perspective camera view to parallel camera projection > and the distance to the scene is much higher than one meter, perpective > camera shows much wider area of the scene. We will fix this problem in > future releases. > > > Best regards, > > Vesa > > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.1.371 / Virus Database: 267.15.1/250 - Release Date: 2/3/2006 > >
