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Tech

Rendering from 'all' angles

17th August 2017

info License: CC-BY
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Published by

Sybren A. Stüvel

This is the fourth video in a series of “tech videos” in which Sybren discusses concrete problems seen on Stack Exchange. In this video we render an object from 'all' angles, which are defined by the points of a mesh. This mesh can then be placed around the object to render.

  • Placing 3D cursor for testing
  • Iterating over vertices
  • Enumerating while iterating
  • Converting from local to world coordinates
  • String formatting

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The Slides

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12 Comments

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Johannes Ewers

2nd September 2017 - 10:16

just finished the last video. Thank you very much. That gave me a good guidance through the blender data maze.Without much Python experience, I was struggling to understand and modify an existing script. This set of videos helped very much. My take: spend enough time to go through the blender API and try to understand the object trees! Make frequent experiments with small script snippets in the text editor.

Sybren A. Stüvel

3rd September 2017 - 01:36

@johannes.ewers: that's great to read, thank you!

Vincent Lamy

11th September 2017 - 14:06

Very nice tutorials, containing nice tips and good practices.

Thanks for this work!

Matt Lloyd

21st September 2017 - 13:18

Hallo Sybren! Thank you for this exciting course. I was listening to the podcast about it today and it's made me want to get started. I was wondering though, about the screen capture software you mentioned. Please would you remind me what it's called? Thanks again Sybren! All the best, Matt.

Sybren A. Stüvel

21st September 2017 - 13:44

@master_joju: I use ffmpeg to do the recording:

OUTNAME="$(date --iso-8601=sec | sed s/:/-/g).mkv"
CAMRES=640x480

ffmpeg \
    -f v4l2 -framerate 25 -video_size $CAMRES -i /dev/video0 \
    -f x11grab -r 25 -s 1920x1080 -i :0.0 \
    -f alsa -ac 1 -ar 44100 -acodec pcm_s24le -i hw:CARD=Podcaster,DEV=0 \
    -map 0 -map 1 -map 2 \
    -metadata:s:0 title="Webcam" \
    -metadata:s:1 title="Screen grab" \
    -metadata:s:2 title="Microphone" \
    -c:v libx264 -preset ultrafast -crf 17 -pix_fmt yuv444p -bf 1 -g 5 \
    -c:a libvorbis -q 10 -af aresample=async=44100 \
    -y "$OUTNAME" \
    -map 0 -pix_fmt yuyv422 -vf hflip -f xv "Recording $OUTNAME"

echo -n "Keep? $OUTNAME [Y/n] "
read answer
if [ "$answer" == "n" ]; then
    echo "Deleting $OUTNAME"
    mkdir -p trash
    mv "$OUTNAME" trash/
fi

Matt Lloyd

21st September 2017 - 20:22

@sybren: Thank you sir!

Andi Bösch

4th April 2018 - 14:25

Great Tutorials. Helped me a lot. I just wished, there is the possibility to just copy and paste the code.

Sybren A. Stüvel

4th April 2018 - 15:56

@Andi Bösch: There is, as the code is in the slides too (they are shown below the video).

rhg931011

16th August 2019 - 08:12

please 2.8ver tutorial!!!! It's great!!!!!!!!!!!!!

Sybren A. Stüvel

16th August 2019 - 15:57

*@rhg931011* I want to add more chapters later this year. For now we just have a 2.80 compatibility page.

Marc Hopkins

22nd April 2021 - 16:15

What I liked about this series on how much it exposed on what can be scripted in Blender.  Very nice and I can fully understand not everything should be scripted. I have a tendency to revert to coding but that is fine for exploring and playing around but in production it should be used where it makes sense and is more practical.  Again very nice series in showing scripting capabilities in Blender.

Sybren A. Stüvel

7th May 2021 - 12:18

@Marc Hopkins Thanks!