Process Help MODTRI - generate a wireframe from a block model

 

Process Name	Menu Path	Link to Command Table
MODTRI	Access using command line only	Click here

 

• Introduction

• Files, Fields and Parameters

Introduction

Convert the visible faces of a sub-cell block model to wireframe surfaces.

This process is much faster than the BLKTRI process and will work better on larger models.

The block model will be interpreted as a solid model.

When using the @PTTOL parameter to detect duplicate wireframe output points the process will be slower

The @ORIGIN parameter can be used with more complex sub celled models to help resolve producing unverifiable wireframes. 

If the block model is a standard rotated block model then the additional fields X0, Y0, Z0, ANGLE1, ANGLE2, ANGLE3, ROTAXIS1, ROTAXIS2, and ROTAXIS3 will be used to calculate the wireframe position.

The standard wireframe GROUP, SURFACE, adjacency and orientation data is output to the wireframe files.  Normals for void surfaces will face inwards and can be used in Studio 3 evaluation processes to automatically exclude the evaluation of the void volume.

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Files, Fields and Parameters

Input Files

Name	Description	I/O Status	Required	Type
IN	Input model file. Must contain fields XC, YC, ZC, XINC, YINC, ZINC, XMORIG, YMORIG, ZMORIG, NX, NY, NZ, and IJK. If it is a Rotated Model then it must also include the fields X0, Y0, Z0, ANGLE1, ANGLE2, ANGLE3, ROTAXIS1, ROTAXIS2, and ROTAXIS3.	Input	Yes	Block Model

Output Files

Name	I/O Status	Required	Type	Description
WIRETR	Output wireframe triangle file.	Output	Yes	Wireframe Triangle
WIREPT	Output wireframe point file.	Output	Yes	Wireframe Points

Parameters

Name	Description	Required	Default	Range	Values
ORIGIN	Origin coordinates. Values are: 0 - retain original coordinates. 1 - use coordinates relative to the model origin. 2 - use the central coordinates of model cells as the new origin	No	0	0,2	0,1,2
PTTOL	Check for duplicates in output wireframe coordinates	No	0	0,1	0,1

 

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Examples

Example 1

Wireframe a model from MODENV, wireframing internal voids to
   represent pillars.  Only the minimum envelope is to be produced.

    !PICREC &IN(MODEL),&OUT(TEMP)
     ENVELOPE matches MIN* END  
    !MODTRI &IN(MODEL),&WIREPT(WIREPT),&WIRETR(WIRETR)

 

Example 2

Wireframe a single zone from a grade sub-cell model.

    !GENTRA &IN(MODEL),&OUT(TEMP)
    SETC ZONE 0
    GTC CU 1; SETC ZONE 1
    GTC CU 3; SETC ZONE 3
    GTC CU 5; SETC ZONE 5
    END
    OK
    !MODTRI &IN(TEMP),&WIREPT(WIREPT),&WIRETR(WIRETR),ZONE= 3
 

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