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    LDraw and LeoCAD

    LDraw tools for parts authors
     

    Isecalc

    Compute the intersection line of two LDraw surfaces.

    Coverer

    Creates a sheet of triangle and quads between two sets of lines

    Intersector

    Cuts a LDraw surface along the intersection with another.

    PlanarCheck

    This tools helps you verify that all quads of a part file are planar enough to fulfill LDraw.org Parts Tracker requirements. Also allows easy splitting of warped quads into two triangles.

    Ytruder

    Creates a sheet of triangle and quads from a set of lines by straight extrusion.

    PathTruder

    Create a surface by extrusion of a shape along a path.

    Projector

    Stamp a flat pattern over a LDraw 3D former.

    Dat2QP

    LDraw to Quad2Dat converter (tool written by J.C. Tchang).

    Rectifier

    A LDraw file optimizer.

    Edger 2

    A LDraw line adder tool that automatically creates conditional lines and edge lines.

    Can also be used as an inliner and as a T-junction checker.

    LDraw measuring tools

    For parts authors, a set of do-it-yourself measuring instruments to directly measure parts in LDraw units.

    SlicerPro

    Slice a flat pattern along the edges of a LDraw 3D former, then stamp it onto this former

    Rings and Cones

    Program written by Niels Karsdorp, hosted here with his authorization. 'Rings and Cones' is a stand-alone application to help LDraw part authors to find multiple rings or cones that make up a single ring or cone with a given inner and outer radius.

    SymSplitter is the tool of choice when you want to exploit symmetries in a LDraw file to reduce its size. You may use it to separate left/right/middle parts, cut parts by planes, and adjust vertices coordinates to make sure they lie precisely in symmetry planes.

    Unificator merges together nearby vertices in LDraw files, and snaps triangle/quads onto primitives/subfiles.

    Selector utility allows to select surface elements by extending a key-colored surface to its neighbours. Edge lines or conditional lines enclosed or bordering selection can be selected too.

    ToriCalc is a program written by Max Martin Richter. It helps you manage LDraw tori (calculates parameters for Primgen2 and provides LDraw line with torus properly scaled).

    Unrectifier does the opposite of Rectifier: it expands Rect primitives into quad and lines, and splits quads into triangles. This eases rework of parts that had been rectified.

    Flipper allows to flip a pair of triangles (change abc + cbd into abd + dca). This helps in some areas of "organic" meshes (eg. hair pieces) to make them smoother (or on the contrary to create a crease to add an edge line).

     

    LDraw tutorials
     

    Edger Tutorial

    Describe the use of Lee Gaiteri's Edger, an optional lines calculator (tutorial written by J.C. Tchang)


    Building shapes with Quad2Dat, Edger and Ytruder


    LDraw and LeoCAD
     

    Unofficial parts pack for LeoCAD
    A parts pack containing all LDraw unofficial parts available as of February 4, 2010

    Rubber belts modeling
    LDraw files to create rubber belts in you favorite CAD program. 

    LeoCAD Part List utility
    Keep track of unofficial parts used in LeoCAD files.


    LDraw.org

     

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