decor-6-expe/font_pixellizer/font_pixelizer.py

#!/usr/bin/env python3
import fontforge, os, re, glob, shutil, sys
from svgpathtools import *
import lxml.etree as ET
import math
from random import randrange

# ============================================================================
# CONFIGURATION
# ============================================================================

fontname = sys.argv[1]  # font source à pixeliser

# Paramètres de pixelisation
pixel_size = 30  # Taille des pixels en unités fonte (plus grand = moins de détails)
x_height_scale = 1  # Échelle de la hauteur d'x (0.5 = écrasé, 2.0 = étiré)
width_scale = 1  # Échelle de largeur (0.5 = condensé, 2.0 = étendu)
monospace = True  # True pour forcer l'espacement fixe
monospace_width = None  # Largeur fixe si monospace (None = auto-calculé)

# Style des pixels
pixel_shape = "square"  # Options: "square", "round", "diamond"
pixel_gap = 0  # Espace entre les pixels (0 = pixels collés)
round_corners = 0  # Rayon d'arrondi des coins pour pixels carrés (0 = coins droits)

# Paramètres d'export
new_family_name = "Decor"  # Nom de famille de la nouvelle typo
font_weight = "Regular"  # Options: "Thin", "Light", "Regular", "Medium", "Bold", "Black"
font_style = "normal"  # Options: "normal", "italic", "oblique"
export_formats = ["ttf"]  # Formats d'export souhaités

# ============================================================================
# INITIALISATION
# ============================================================================

try:
    os.mkdir("svg")
    os.mkdir("svg2")
except:
    pass

print("=" * 70)
print("FONT PIXELIZER")
print("=" * 70)
print(f"Fonte source: {fontname}")
print(f"Taille pixel: {pixel_size}")
print(f"Échelle hauteur x: {x_height_scale}")
print(f"Échelle largeur: {width_scale}")
print(f"Monospace: {monospace}")
print(f"Forme pixel: {pixel_shape}")
print("=" * 70)

print("\nOuverture de la fonte source...")
font = fontforge.open(fontname)
font_ascent, font_descent = font.ascent, font.descent

# Stocker les infos des glyphes
glyph_info = {}
composite_glyphs = {}

print("Extraction des glyphes...")
for gly in font.glyphs():
    glyph_name = gly.glyphname
    is_composite = len(gly.references) > 0
    
    if is_composite:
        composite_glyphs[glyph_name] = {
            'width': gly.width,
            'unicode': gly.unicode,
            'encoding': gly.encoding,
            'references': []
        }
        for ref in gly.references:
            composite_glyphs[glyph_name]['references'].append({
                'glyph': ref[0],
                'transform': ref[1]
            })
        print(f"  Composite: {glyph_name} (unicode: {gly.unicode})")
    else:
        glyph_info[glyph_name] = {
            'width': gly.width,
            'unicode': gly.unicode,
            'encoding': gly.encoding
        }
        try:
            gly.export("svg/" + glyph_name + ".svg")
            print(f"  Exporté: {glyph_name} (unicode: {gly.unicode})")
        except Exception as e:
            print(f"  Erreur export {glyph_name}: {e}")

# ============================================================================
# FONCTIONS DE PIXELISATION
# ============================================================================

def create_pixel_path(x, y, size, shape="square", gap=0, round_radius=0):
    """Crée un path SVG pour un pixel unique"""
    actual_size = size - gap
    half = actual_size / 2
    
    if shape == "square":
        if round_radius > 0:
            # Carré avec coins arrondis
            r = min(round_radius, half)
            path_data = f"""
                M {x - half + r},{y - half}
                L {x + half - r},{y - half}
                Q {x + half},{y - half} {x + half},{y - half + r}
                L {x + half},{y + half - r}
                Q {x + half},{y + half} {x + half - r},{y + half}
                L {x - half + r},{y + half}
                Q {x - half},{y + half} {x - half},{y + half - r}
                L {x - half},{y - half + r}
                Q {x - half},{y - half} {x - half + r},{y - half}
                Z
            """
        else:
            # Carré simple
            path_data = f"""
                M {x - half},{y - half}
                L {x + half},{y - half}
                L {x + half},{y + half}
                L {x - half},{y + half}
                Z
            """
    
    elif shape == "round":
        # Cercle
        path_data = f"""
            M {x - half},{y}
            A {half},{half} 0 1,0 {x + half},{y}
            A {half},{half} 0 1,0 {x - half},{y}
            Z
        """
    
    elif shape == "diamond":
        # Losange
        path_data = f"""
            M {x},{y - half}
            L {x + half},{y}
            L {x},{y + half}
            L {x - half},{y}
            Z
        """
    
    return parse_path(path_data.replace("\n", " ").strip())


def pixelize_glyph(svg_path):
    # Pixelise un glyphe en analysant sa forme et en plaçant des pixels
    try:
        # Lire le SVG original
        paths, attributes = svg2paths(svg_path)
        
        if len(paths) == 0:
            return False
        
        # Calculer la bounding box
        xmin, xmax, ymin, ymax = paths[0].bbox()
        for path in paths[1:]:
            bbox = path.bbox()
            xmin = min(xmin, bbox[0])
            xmax = max(xmax, bbox[1])
            ymin = min(ymin, bbox[2])
            ymax = max(ymax, bbox[3])
        
        width = xmax - xmin
        height = ymax - ymin
        
        if width == 0 or height == 0:
            return False
        
        # Appliquer les échelles
        scaled_height = height * x_height_scale
        scaled_width = width * width_scale
        
        # Décommenter ici pour avoir des tailles de pixels aléatoires
        #pixel_size = randrange(30, 60, 1) 

        # Calculer la grille de pixels
        cols = max(1, int(scaled_width / pixel_size))
        rows = max(1, int(scaled_height / pixel_size))
        
        # Ajuster les positions pour centrer
        start_x = xmin + (width - cols * pixel_size) / 2
        start_y = ymin + (height - rows * pixel_size) / 2
        
        pixel_paths = []
        
        # Pour chaque position de pixel potentielle
        for row in range(rows):
            for col in range(cols):
                # Centre du pixel
                px = start_x + col * pixel_size + pixel_size / 2
                py = start_y + row * pixel_size + pixel_size / 2
                
                # Transformer le point selon les échelles
                test_x = xmin + (px - xmin) / width_scale
                test_y = ymin + (py - ymin) / x_height_scale
                
                # Tester si ce point est à l'intérieur des contours originaux
                point = complex(test_x, test_y)
                is_inside = False
                
                for path in paths:
                    try:
                        # Utiliser la méthode de raycasting
                        # Compter combien de fois un rayon horizontal croise le contour
                        crossings = 0
                        for seg in path:
                            if hasattr(seg, 'start') and hasattr(seg, 'end'):
                                y1 = seg.start.imag
                                y2 = seg.end.imag
                                x1 = seg.start.real
                                x2 = seg.end.real
                                
                                if (y1 <= test_y < y2) or (y2 <= test_y < y1):
                                    if x1 + (test_y - y1) / (y2 - y1) * (x2 - x1) > test_x:
                                        crossings += 1
                        
                        if crossings % 2 == 1:
                            is_inside = True
                            break
                    except:
                        pass
                
                # Si le point est à l'intérieur, créer un pixel
                if is_inside:
                    pixel_path = create_pixel_path(
                        px, py, pixel_size, 
                        shape=pixel_shape, 
                        gap=pixel_gap,
                        round_radius=round_corners
                    )
                    
                    # Exemple de configuration avec de l'aléatoire
                    '''pixel_path = create_pixel_path(
                        px, py, randrange(30, 60, 1), 
                        shape=pixel_shape, 
                        gap=randrange(0, 10, 1),
                        round_radius=randrange(0, 10, 1)
                    )'''
                    
                    pixel_paths.append(pixel_path)
        
        if len(pixel_paths) == 0:
            return False
        
        # Créer le SVG de sortie
        attr = {
            "fill": "black",
            "stroke": "none"
        }
        attrs = [attr] * len(pixel_paths)
        
        # Calculer les nouvelles dimensions
        output_width = cols * pixel_size
        output_height = rows * pixel_size
        
        wsvg(
            pixel_paths,
            attributes=attrs,
            svg_attributes={
                "width": output_width, 
                "height": output_height,
                "viewBox": f"{start_x} {start_y} {output_width} {output_height}"
            },
            filename=svg_path.replace("svg/", "svg2/"),
        )
        
        return True
        
    except Exception as e:
        print(f"Erreur pixelisation: {e}")
        return False


def makeFont(family_name, weight, style):
    # Génère la fonte finale à partir des SVG pixelisés
    svgDir = glob.glob("svg2/*.svg")
    
    print("\nCréation d'une nouvelle fonte vide…")
    newfont = fontforge.font()
    
    newfont.encoding = "UnicodeFull"
    newfont.ascent = int(font_ascent * x_height_scale)
    newfont.descent = int(font_descent * x_height_scale)
    newfont.em = newfont.ascent + newfont.descent
    
    # Configuration dy nom de la font et de ses paramètres
    newfont.familyname = family_name
    newfont.fontname = family_name.replace(" ", "") + "-" + weight
    newfont.fullname = family_name + " " + weight
    newfont.weight = weight
    
    newfont.appendSFNTName("English (US)", "Family", family_name)
    newfont.appendSFNTName("English (US)", "SubFamily", weight)
    newfont.appendSFNTName("English (US)", "Fullname", family_name + " " + weight)
    newfont.appendSFNTName("English (US)", "PostScriptName", family_name.replace(" ", "") + "-" + weight)
    
    if style == "italic":
        newfont.italicangle = -12
        newfont.fontname += "Italic"
        newfont.fullname += " Italic"
    elif style == "oblique":
        newfont.italicangle = -12
        newfont.fontname += "Oblique"
        newfont.fullname += " Oblique"
    
    weight_map = {
        "Thin": 100, "ExtraLight": 200, "Light": 300, "Regular": 400,
        "Medium": 500, "SemiBold": 600, "Bold": 700, "ExtraBold": 800, "Black": 900
    }
    newfont.os2_weight = weight_map.get(weight, 400)
    
    # Calculer la largeur monospace si nécessaire
    calculated_monospace_width = monospace_width
    if monospace and calculated_monospace_width is None:
        # Calculer la largeur moyenne des glyphes
        widths = [info['width'] for info in glyph_info.values()]
        calculated_monospace_width = int(sum(widths) / len(widths) * width_scale) if widths else 500
        print(f"Largeur monospace calculée: {calculated_monospace_width}")
    
    # Import des glyphes depuis SVG
    print(f"\nImport des glyphes pixelisés...")
    imported_count = 0
    
    for glyph_path in svgDir:
        try:
            glyph_name = glyph_path.split("/")[-1].replace(".svg", "")
            
            if glyph_name not in glyph_info:
                continue
            
            info = glyph_info[glyph_name]
            
            # Créer le glyphe
            if info['unicode'] != -1:
                char = newfont.createChar(info['unicode'], glyph_name)
            else:
                char = newfont.createChar(-1, glyph_name)
            
            # Appliquer la largeur
            if monospace:
                char.width = calculated_monospace_width
            else:
                char.width = int(info['width'] * width_scale)
            
            char.importOutlines(glyph_path, scale=False)
            
            # Centrer le glyphe si monospace
            if monospace:
                try:
                    char.left_side_bearing = int((calculated_monospace_width - char.width) / 2)
                    char.width = calculated_monospace_width
                except:
                    pass
            
            imported_count += 1
            
            if imported_count % 50 == 0:
                print(f"  ... {imported_count} glyphes importés")
                
        except Exception as e:
            print(f"  ✗ Erreur avec {glyph_name}: {e}")
    
    print(f"✓ {imported_count} glyphes pixelisés importés")
    
    # Copie des glyphes spéciaux
    print("\nCopie des glyphes spéciaux...")
    special_count = 0
    
    for glyph_name, info in glyph_info.items():
        unicode_val = info['unicode']
        
        if unicode_val != -1 and unicode_val not in newfont:
            try:
                special_glyph = newfont.createChar(unicode_val, glyph_name)
                if monospace:
                    special_glyph.width = calculated_monospace_width
                else:
                    special_glyph.width = int(info['width'] * width_scale)
                special_count += 1
            except:
                pass
    
    print(f"✓ {special_count} glyphes spéciaux copiés")
    
    # Reconstruction des composites
    print("\nReconstruction des glyphes composites...")
    composite_success = 0
    
    for glyph_name, info in composite_glyphs.items():
        try:
            unicode_val = info['unicode']
            
            if unicode_val == -1:
                continue
            
            composite_glyph = newfont.createChar(unicode_val, glyph_name)
            if monospace:
                composite_glyph.width = calculated_monospace_width
            else:
                composite_glyph.width = int(info['width'] * width_scale)
            
            all_refs_exist = True
            for ref in info['references']:
                if ref['glyph'] not in newfont:
                    all_refs_exist = False
                    break
            
            if not all_refs_exist:
                continue
            
            for ref in info['references']:
                # Adapter la transformation avec les échelles
                transform = list(ref['transform'])
                transform[0] *= width_scale  # xx
                transform[3] *= x_height_scale  # yy
                transform[4] *= width_scale  # dx
                transform[5] *= x_height_scale  # dy
                
                composite_glyph.addReference(ref['glyph'], tuple(transform))
            
            composite_glyph.unlinkRef()
            composite_success += 1
            
        except Exception as e:
            print(f"  ✗ Erreur composite {glyph_name}: {e}")
    
    print(f"✓ {composite_success} glyphes composites créés")
    
    # Export
    output_name = family_name.replace(" ", "") + "-" + weight
    if style != "normal":
        output_name += style.capitalize()
    
    print(f"\nExport de la fonte...")
    for fmt in export_formats:
        try:
            output_file = output_name + "." + fmt
            if fmt == "otf":
                newfont.generate(output_file, flags=("opentype",))
            else:
                newfont.generate(output_file)
            print(f"  ✓ Exporté: {output_file}")
        except Exception as e:
            print(f"  ✗ Erreur export {fmt}: {e}")
    
    newfont.close()

# ============================================================================
# TRAITEMENT PRINCIPAL
# ============================================================================

print("\n" + "=" * 70)
print("PIXELISATION DES GLYPHES")
print("=" * 70)

processed = 0
failed = 0
empty = 0

for lettre in glob.glob("svg/*.svg"):
    try:
        result = pixelize_glyph(lettre)
        if result:
            processed += 1
            if processed % 10 == 0:
                print(f"  ... {processed} glyphes traités")
        else:
            empty += 1
    except Exception as e:
        print(f"  Erreur: {e}")
        failed += 1

print(f"\n✓ Traités: {processed}")
print(f"⚠ Vides: {empty}")
print(f"✗ Échecs: {failed}")

print("\n" + "=" * 70)
print("GÉNÉRATION DE LA FONTE")
print("=" * 70)

makeFont(new_family_name, font_weight, font_style)

print("\n" + "=" * 70)
print("TERMINÉ!")
print("=" * 70)
print(f"\nRésumé:")
print(f"  - Famille: {new_family_name}")
print(f"  - Poids: {font_weight}")
print(f"  - Taille pixel: {pixel_size}")
print(f"  - Échelle hauteur: {x_height_scale}")
print(f"  - Échelle largeur: {width_scale}")
print(f"  - Monospace: {monospace}")
print(f"  - Formats: {', '.join(export_formats)}")

# Nettoyage
print("\nNettoyage…")
try:
    shutil.rmtree("svg")
    shutil.rmtree("svg2")
    print("✓ Nettoyage terminé")
except:
    print("⚠ Nettoyage impossible")