poly-mech/cad/drawers/tools/render.sh
2025-07-04 12:37:24 +02:00

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#!/bin/bash
# --- render.sh ---
# Renders an OpenSCAD file to a PNG image.
#
# Usage: ./render.sh <source_file.scad> [output_file.png] [folded_state]
#
# Arguments:
# $1: source_file - The path to the input OpenSCAD file. (Required)
# $2: output_file - The path for the output PNG image. (Optional)
# $3: folded_state - 'true' or 'false' to control the Folded_View parameter.
# (Optional, defaults to false)
# --- Input Validation ---
if [ -z "$1" ]; then
echo "Usage: $0 <source_file.scad> [output_file.png] [folded_state]"
echo "Error: Source file not specified."
exit 1
fi
# --- Argument Parsing ---
SOURCE_FILE="$1"
OUTPUT_FILE=""
FOLDED_STATE="false" # Default value
# Case 1: All three arguments are provided
if [ -n "$3" ]; then
OUTPUT_FILE="$2"
FOLDED_STATE="$3"
# Case 2: Only two arguments are provided
elif [ -n "$2" ]; then
# Check if the second argument is the folded state or a filename
if [[ "$2" == "true" || "$2" == "false" ]]; then
FOLDED_STATE="$2"
else
OUTPUT_FILE="$2"
fi
fi
# --- Set Default Output Filename ---
if [ -z "$OUTPUT_FILE" ]; then
# Removes the .scad extension and appends .png
OUTPUT_FILE="${SOURCE_FILE%.scad}_${FOLDED_STATE}.png"
fi
# --- OpenSCAD Render Command ---
# --view=iso: Sets the camera to a standard isometric view.
# --imgsize: Sets the output image resolution.
# -D: Overrides a variable in the OpenSCAD script.
echo "Rendering '$SOURCE_FILE' to '$OUTPUT_FILE' with Folded_View=$FOLDED_STATE..."
openscad \
-o "$OUTPUT_FILE" \
--view=iso \
--imgsize=1024,768 \
-D "Folded_View=$FOLDED_STATE" \
"$SOURCE_FILE"
# --- Completion Message ---
if [ $? -eq 0 ]; then
echo "Render complete: '$OUTPUT_FILE' created successfully."
else
echo "Error: OpenSCAD rendering failed."
exit 1
fi