how to draw a 3d minecraft block

Introduction

binvox and viewvox tin be of help when trying to build a voxelized version of a 3D mesh in minecraft.
Executables are available for Linux (32 and 64 bit), Mac OS Ten, and Windows.

Do transport me screenshots of the models you have built!

Click on the paradigm on the correct to see the gallery in the picasa web album binvox/viewvox for minecraft.

Note to Windows users:

binvox

and

viewvox

are commandline tools, which means they must be run from a command shell. In Windows, beginning a command shell with Start → Run → cmd (enter), then use the

cd

control to alter to the folder where you have

binvox.exe

,

viewvox.exe

, and the model yous want to convert. Send me a annotation if anything is unclear. Eric Haines wrote a good

step-past-stride tutorial for Windows users, and has created a quickstart bundle of all software needed for Windows (including 2 sample models). Here is a tutorial in High german (Tutorial auf Deutsch).

(I've had one report from a Windows user where the downloaded binvox and viewvox files had to be renamed to binvox.exe and viewvox.exe)

Note to Mac users: the aforementioned goes for the Mac, you should run

binvox

and

viewvox

from the Concluding: afterwards downloading them into the aforementioned folder every bit your model, exercise:

• chmod 755 binvox
• chmod 755 viewvox
• You can and then run the programs like this:
  ./binvox
  and:
  ./viewvox
  to get a summary of the commandline options.

Here is a Mac tutorial, written by Manic Miner. If y'all have questions about how to use the Terminal app, please search Google for "mac os ten using terminal".

Note to Linux users: I assume you lot're familiar with the commandline :-) (but do send me a note if something is unclear)

Process

Presume we have a 3D model similar the one at the top left, in a file mug.wrl.

Pace 1: voxelize it

Run:
./binvox -d 32 -c mug.wrl
which will create a file mug.binvox.

View the result with viewvox:
./viewvox mug.binvox
(the x, y, and z in the epitome were added later):

In viewvox, the x axis is red, the y axis dark-green, and the z axis bluish. Some models (like this one) use the z axis as the up centrality, whereas viewvox uses the y axis. You lot can prepare this by passing -rotx parameter to binvox, which makes it rotate the object past 90 degrees counter-clockwise around the x centrality, effectively changing the upward axis from z to y:
./binvox -d 64 -c -rotx mug.wrl

How to voxelize thin features

If your model has no thin features, you tin can skip this section.

If the model has thin features that are lost in the voxelization, y'all may want to voxelize at a higher resolution and downsample:
./binvox -d 256 -down -down -c mug.wrl
You may as well want to play with the -dmin parameter, which sets the minimum number of source voxels that take to be on in the 2x2x2 source cube for a destination voxel to be on. It defaults to 4, but for very thin features you could endeavor ii, for example:
./binvox -d 256 -down -downwards -dmin 2 -c mug.wrl

If the model has features with zero width (e.g. a single triangle/quad/etc.), you could apply both the -aw option ("add wireframe"), which too renders the model in wireframe (only when carving), which does render aught width triangles seen from the side, and -dc ("dilated carving"), which doesn't carve away as much (the carving stops one voxel earlier the intersection), for example:
./binvox -d 256 -down -downwards -c -dc -aw mug.wrl

How to voxelize only role of the model

Suppose you lot have a model of a gargoyle, and you desire to voxelize merely the head:

Y'all can see from the axes in the epitome that this means we need to limit the voxelization in the z direction. Yous can crop the rendering of binvox with the -bb parameter, noting that your model will always be in the unit of measurement cube (i.eastward. the cube from (0, 0, 0) to (1, 1, 1)). Examine the whole voxel model (voxelized with binvox -d 64 -cb) to estimate approximately where you need to crop:

The bottom image shows the voxel model from the top (press y in viewvox to get the view directly from the top, and possibly p to switch to an orthographic project). You lot can come across the head ends approximately 25 voxels from the left. 25/64 is about 0.iv, to we'll limit voxelization to 0.four in the z direction:
binvox -d 64 -cb -bb 0 0 0 ane 1 0.iv -fit gargoyle.ply
(-cb centers the model in the unit cube, -fit makes sure a voxel model is written with simply the voxels in its bounding box). The event:

Note: because the exact voxelization method (select with -due east) doesn't utilise OpenGL, the -bb parameter has no effect. Too, you may have to experiment with using the voting method only (select with -v) for case, considering cropping a model is likely to go far hollow.

Pace two: visualize piece by slice

Run:
./viewvox mug.binvox

By default viewvox removes the internal voxels (creating a "hollow" model). If you want to proceed the internal voxels, run it like this: ./viewvox -ki mug.binvox.

The keyboard and mouse commands available in viewvox are printed in the terminal window you run information technology from ("cmd" in Windows, "Terminal" in Mac OS X).

At present, typically you'd printing s to evidence one piece of the voxel model, thousand and j to prove the next piece up and down (the electric current slice index is shown in the terminal window), and a to show the voxels with alternate colours, for instance:

To ameliorate examine the correspondence between successive slices, press n to show the slices above and below the current slice (optionally t to brand these slices transparent). The right image shows a summit view in orthographic projection.

To build the model in minecraft, I run minecraft and viewvox side-by-side and then I can meet where the blocks should go.

Obviously many improvements are possible, send me your suggestions.

Some recent additions:

• testify coordinate values in the image (press one)
• switch between orthographic and perspective projection (printing p)
• expect straight down the 10, Y, or Z centrality (press ten, y, or z) (X, Y, or Z to look from the other side)
• store and restore settings (i.due east. when you start viewvox again with the same voxel model, information technology uses the same camera and other settings)
• employ keys to stride camera (left, right, etc.) one voxel at a time
• the filigree at present has a jail cell for each voxel, and tin be shown at the bottom or at the slice level (press g)
• both binvox and viewvox will testify the size of the area filled past the voxel model, and its bounding box (thanks to Eric Haines who submitted code for this). You can crop the voxel model by this bounding box (-fit commandline parameter)
• support for writing .schematic files
• thick lines in the grid every 5 blocks
• unmarried slice view cycles through none-above-below-both
• unmarried slice view in shows slice number

Still on the to exercise listing are:

• add option for 45 degree rotation
• bear witness (x, y) coordinates on voxels
• bookmark and jump to camera positions
• coloured meshes to convert to coloured voxels
• back up for reading .3ds files, and for writing .vxl files
• centre a slice in the view
• better "trackball fashion" viewing
• show number of voxels in slice
• compile with freeglut instead of glut (to prevent mouse cycle crash)
• viewvox option to write an image file for each slice

---

Do check out...

• the amazing Mineways tool, which makes it easy to create 3D prints (!) of parts of your world
• a Perl script for combining two minecraft stats/achievements files
• 
  attempt my Calcudoku puzzle site, which too has Killer Sudoku and Sudoku puzzles

Any comments/suggestions are welcome at . Practice send me screenshots of the models y'all have built!

barkertheriest1946.blogspot.com

Source: https://www.patrickmin.com/minecraft/

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