From c549b1724a570a0543b9f72fa6a0ad59d8f6448e Mon Sep 17 00:00:00 2001
From: "Adrian A. Baumann" <ade@adebaumann.com>
Date: Fri, 31 Jul 2026 14:59:51 +0200
Subject: [PATCH] Tick size adjustable

---
 web/app.py               | 24 ++++++++++++++++++++++--
 web/templates/index.html | 30 ++++++++++++++++++++++++++++++
 2 files changed, 52 insertions(+), 2 deletions(-)

diff --git a/web/app.py b/web/app.py
index ae91ba8..cff846b 100644
--- a/web/app.py
+++ b/web/app.py
@@ -447,6 +447,12 @@ def generate_svg(
     custom_labels=None,
     label_size=5.1126,
     font_key=None,
+    major_len=MAJOR_LEN,
+    major_w=MAJOR_W,
+    medium_len=MEDIUM_LEN,
+    medium_w=MEDIUM_W,
+    small_len=SMALL_LEN,
+    small_w=SMALL_W,
 ):
     fd = (
         _FONTS.get(font_key) or _FONTS.get(_DEFAULT_FONT) or next(iter(_FONTS.values()))
@@ -589,7 +595,7 @@ def generate_svg(
     )
 
     for angle in big_angles:
-        parts.append(_tick_line(angle, MAJOR_LEN, MAJOR_W))
+        parts.append(_tick_line(angle, major_len, major_w))
 
     if small_ticks > 0:
         sub = small_ticks + 1
@@ -604,7 +610,7 @@ def generate_svg(
                     v = big_vals[i] + j * (big_vals[i + 1] - big_vals[i]) / sub
                     angle = value_to_angle(v)
                 length, width = (
-                    (MEDIUM_LEN, MEDIUM_W) if j == medium_j else (SMALL_LEN, SMALL_W)
+                    (medium_len, medium_w) if j == medium_j else (small_len, small_w)
                 )
                 parts.append(_tick_line(angle, length, width))
 
@@ -678,6 +684,14 @@ def generate():
         small_ticks = max(0, min(20, int(request.form.get("small_ticks", 4))))
         label_count = max(2, int(request.form.get("label_count", 6)))
         label_size = max(0.5, min(25.0, float(request.form.get("label_size", 5.1126))))
+        major_len = max(0.1, min(25.0, float(request.form.get("major_len", MAJOR_LEN))))
+        major_w = max(0.01, min(10.0, float(request.form.get("major_w", MAJOR_W))))
+        medium_len = max(
+            0.1, min(25.0, float(request.form.get("medium_len", MEDIUM_LEN)))
+        )
+        medium_w = max(0.01, min(10.0, float(request.form.get("medium_w", MEDIUM_W))))
+        small_len = max(0.1, min(25.0, float(request.form.get("small_len", SMALL_LEN))))
+        small_w = max(0.01, min(10.0, float(request.form.get("small_w", SMALL_W))))
         if request.form.get("max_is_inf") == "1":
             max_val = math.inf
 
@@ -695,6 +709,12 @@ def generate():
             custom_labels,
             label_size,
             font_key,
+            major_len,
+            major_w,
+            medium_len,
+            medium_w,
+            small_len,
+            small_w,
         )
     except ValueError as err:
         return Response(str(err), status=400, mimetype="text/plain")
diff --git a/web/templates/index.html b/web/templates/index.html
index e52fef4..bd0ab26 100644
--- a/web/templates/index.html
+++ b/web/templates/index.html
@@ -378,6 +378,36 @@ Right</textarea>
             <input name="label_size" type="number" step="any" min="0.5" max="25" value="5.1126" required>
           </div>
         </div>
+        <div class="row row-2" style="margin-top:1.25rem">
+          <div class="field">
+            <label>Major tick length (mm)</label>
+            <input name="major_len" type="number" step="any" min="0.1" max="25" value="4.8" required>
+          </div>
+          <div class="field">
+            <label>Major tick thickness (mm)</label>
+            <input name="major_w" type="number" step="any" min="0.01" max="10" value="0.8" required>
+          </div>
+        </div>
+        <div class="row row-2" style="margin-top:1.25rem">
+          <div class="field">
+            <label>Middle tick length (mm)</label>
+            <input name="medium_len" type="number" step="any" min="0.1" max="25" value="3.1" required>
+          </div>
+          <div class="field">
+            <label>Middle tick thickness (mm)</label>
+            <input name="medium_w" type="number" step="any" min="0.01" max="10" value="0.38" required>
+          </div>
+        </div>
+        <div class="row row-2" style="margin-top:1.25rem">
+          <div class="field">
+            <label>Minor tick length (mm)</label>
+            <input name="small_len" type="number" step="any" min="0.1" max="25" value="1.8" required>
+          </div>
+          <div class="field">
+            <label>Minor tick thickness (mm)</label>
+            <input name="small_w" type="number" step="any" min="0.01" max="10" value="0.28" required>
+          </div>
+        </div>
         <div class="row row-2" style="margin-top:1.25rem">
           <div class="field">
             <label>Font</label>