mkheadshot.sh

#!/usr/bin/env bash

show_help() {
    echo "Usage: $0 [input_dir] [gravity] [offset]"
    echo ""
    echo "Parameters:"
    echo "  input_dir    Directory containing the input images (default: ./input)"
    echo "  gravity      Gravity setting for ImageMagick operations (default: center)"
    echo "  offset       Offset setting for ImageMagick operations (default: +0+0)"
    echo ""
    echo "Examples:"
    echo "  $0"
    echo "  $0 my_input_directory north +0+10"
}

# Check for help argument or if input_dir does not exist
if [[ "$1" == "help" || "$1" == "-help" || "$1" == "--help" || "$1" == "-?" ]]; then
    show_help
    exit 0
fi

# Set the parameters with default values if not provided
input_dir=${1:-input}
gravity=${2:-center}
offset=${3:-+0+0}

if [[ ! -d "$input_dir" ]]; then
    echo "Error: Input directory '$input_dir' does not exist."
    show_help
    exit 1
fi

# Ensure the required directories exist
mkdir -p normalized tessellated

# Check if there are files to process
shopt -s nullglob
input_files=("$input_dir"/*)
if [[ ${#input_files[@]} -eq 0 ]]; then
    echo "No files to process in directory '$input_dir'."
    show_help
    exit 1
fi
shopt -u nullglob

# Iterate over each input file in the input directory
for input_file in "${input_files[@]}"; do
    # Get the base name and extension
    base_name=$(basename "$input_file")
    extension="${base_name##*.}"
    base_name="${base_name%.*}"
    output_name="$base_name.png"

    # Transform the headshot
    normalized_file="normalized/${base_name}__384x512.png"
    convert "$input_file" -auto-orient -resize "384^x512" -flatten -gravity "$gravity" -crop 384^x512"$offset" +repage "$normalized_file"

    # Combine the tessellation with the normalized headshot
    tessellated_file="tessellated/${base_name}__tessellated.png"
    montage -mode concatenate tess.png "$normalized_file" -tile 2x1 -geometry +0+0 "$tessellated_file"

    # Display info about the images
    identify "$normalized_file"
    identify "$tessellated_file"

    # Optionally, open the tessellated image (comment this out if not needed)
    open "$tessellated_file"
done