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	add a 3d shape-key effect command (initial version) - annna - Annna the nice fr…
	git clone git://bitreich.org/annna/ git://enlrupgkhuxnvlhsf6lc3fziv5h2hhfrinws6…
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	---
	commit 1a4411fb8d73e77aa3a4cc06504275cfe5fb9343
	parent 3524a992d47d9aa4016c82fd2bb5a7a85e86b9dc
	Author: Josuah Demangeon <[email protected]>
	Date: Sun, 31 Jul 2022 14:31:45 +0200

	add a 3d shape-key effect command (initial version)

	Signed-off-by: Annna Robert-Houdin <[email protected]>

	Diffstat:
	M annna-message-common \| 5 +++++
	A blender-effect \| 30 ++++++++++++++++++++++++++++++
	A modules/blender/.gitignore \| 1 +
	A modules/blender/effect.py \| 42 +++++++++++++++++++++++++++++…

	4 files changed, 78 insertions(+), 0 deletions(-)
	---
	diff --git a/annna-message-common b/annna-message-common
	@@ -924,6 +924,11 @@ case "${text}" in
	} &
	exit 0
	;;
	+"${botname}, please 3d "*)
	+ args=$(echo ${text} \| cut -d' ' -f 4-)
	+ outfile=$(blender-effect $args)
	+ annna-say -s "${server}" -c "${channel}" "${user}, gopher://bitreich.o…
	+ ;;
	"${botname}, please simulate "" simulator")
	q="${text#* please simulate }"
	q="${q% simulator*}"
	diff --git a/blender-effect b/blender-effect
	@@ -0,0 +1,30 @@
	+#!/bin/sh
	+# https://docs.blender.org/manual/en/latest/advanced/command_line/render.html
	+
	+if [ "$#" -lt 2 ]
	+then
	+ printf 'usage: %s effect-name model-name [param=value]\n' "${0##*/}" >…
	+ exit 1
	+fi
	+
	+export EFFECT="$1"
	+export NAME="$2"
	+shift 2
	+
	+BLENDER=blender
	+BLEND_DIR="$(dirname "$0")/modules/blender"
	+IMAGE_DIR=/bitreich/gopher/memecache/3d
	+
	+# turn "key1=value key2=value key3=value" into variables used by blender-effec…
	+for x in "$@"
	+do
	+ export "var_$1"
	+done
	+
	+${BLENDER} --background \
	+ "${BLEND_DIR}/${NAME}.blend" \
	+ --python "${BLEND_DIR}/effect.py" \
	+ --render-output "${IMAGE_DIR}/${NAME}." \
	+ --render-frame \
	+ 1 >&2 \
	+&& echo "${NAME}.0001.png"
	diff --git a/modules/blender/.gitignore b/modules/blender/.gitignore
	@@ -0,0 +1 @@
	+*.blend
	diff --git a/modules/blender/effect.py b/modules/blender/effect.py
	@@ -0,0 +1,42 @@
	+# https://docs.blender.org/api/current/index.html
	+#
	+# This is to be be called from blender itself (--python), and does not
	+# need 'bpy' to be installed from pip. It will be executed after blender
	+# is initialised and before the rendering begins.
	+
	+# The camera can be changed in the blender file before hand, with a nice
	+# default. The default camera will be used. The object original author
	+# did probably do it already.
	+
	+import bpy
	+import os
	+
	+# all transformations will be done on the active object (orange in the GUI)
	+obj = bpy.context.active_object
	+
	+def effect_translate(x=0, y=0, z=0):
	+ bpy.ops.transform.translate(value=(x, y, z))
	+
	+def effect_shape_key(value=0):
	+ """
	+ Shape keys permits to adjust proportions of an object,
	+ the active shape key is going to be adjusted.
	+ """
	+ print(f"running effect shape_key with value={value}")
	+
	+ if obj.active_shape_key.value == None:
	+ raise Exception("there must be a shape key added in the blend file fir…
	+
	+ obj.active_shape_key.value = value
	+
	+# the below is used because we only can communicate with the shell script
	+# through environment variables
	+
	+# grab all ${var_...} and turn it into python parameters
	+vars = {}
	+for k, v in os.environ.items():
	+ if k.startswith("var_"):
	+ vars[k[4:]] = float(v)
	+
	+# call function depending on ${EFFECT} variable, and dispatch vars arguments
	+locals()["effect_" + os.environ["EFFECT"]](**vars)