Add an "Align.NONE" enum member.

This option means "leave me alone". It is necessary for placing text on its baseline.
gumyr · Oct 13, 2024 · 9c3e62d · 9c3e62d
1 parent e2434d7
commit 9c3e62d
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Showing 7 changed files with 19 additions and 6 deletions.
diff --git a/docs/cheat_sheet.rst b/docs/cheat_sheet.rst
@@ -215,7 +215,7 @@ Cheat Sheet
 .. card:: Enums
 
     +----------------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------+
-    | :class:`~build_enums.Align`            | MIN, CENTER, MAX                                                                                                                        |
+    | :class:`~build_enums.Align`            | MIN, CENTER, MAX, NONE                                                                                                                  |
     +----------------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------+
     | :class:`~build_enums.ApproxOption`     | ARC, NONE, SPLINE                                                                                                                       |
     +----------------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------+

diff --git a/docs/objects_2d.py b/docs/objects_2d.py
@@ -112,7 +112,7 @@
 
 # [Ex. 11]
 with BuildSketch() as example_11:
-    Text("text", 1)
+    Text("text", 1, align=(Align.CENTER, Align.NONE))
 # [Ex. 11]
 s = 100 / max(*example_11.sketch.bounding_box().size)
 svg = ExportSVG(scale=s)
@@ -123,7 +123,7 @@
 with BuildSketch() as example_12:
     t = Trapezoid(2, 1, 80)
     with Locations((-0.6, -0.3)):
-        Text("80°", 0.3, mode=Mode.SUBTRACT)
+        Text("80°", 0.3, mode=Mode.SUBTRACT, align=(Align.CENTER, Align.NONE))
 # [Ex. 12]
 s = 100 / max(*example_12.sketch.bounding_box().size)
 svg = ExportSVG(scale=s)
@@ -207,9 +207,9 @@
 p1 = CenterArc(t.vertices().group_by(Axis.Y)[0].sort_by(Axis.X)[0], 8, 0, t.B)
 p2 = CenterArc(t.vertices().group_by(Axis.Y)[0].sort_by(Axis.X)[-1], 8, 180 - t.C, t.C)
 p3 = CenterArc(t.vertices().sort_by(Axis.Y)[-1], 8, 270 - t.A / 2, t.A)
-t1 = Text("B", font_size=d.font_size).moved(Pos(p1 @ 0.5))
-t2 = Text("C", font_size=d.font_size).moved(Pos(p2 @ 0.5))
-t3 = Text("A", font_size=d.font_size).moved(Pos(p3 @ 0.5))
+t1 = Text("B", font_size=d.font_size).moved(Pos(p1 @ 0.5, align=(Align.CENTER, Align.NONE))
+t2 = Text("C", font_size=d.font_size).moved(Pos(p2 @ 0.5, align=(Align.CENTER, Align.NONE))
+t3 = Text("A", font_size=d.font_size).moved(Pos(p3 @ 0.5, align=(Align.CENTER, Align.NONE))
 
 s = 100 / max(*isosceles_triangle.sketch.bounding_box().size)
 svg = ExportSVG(scale=s)

diff --git a/src/build123d/build_common.py b/src/build123d/build_common.py
@@ -951,6 +951,8 @@ def __init__(
                 align_offset.append(-size[i] / 2)
             elif self.align[i] == Align.MAX:
                 align_offset.append(-size[i])
+            elif self.align[i] == Align.NONE:
+                align_offset.append(0)
 
         # Align the points
         points = ShapeList(
@@ -1151,6 +1153,8 @@ def __init__(
                 align_offset.append(-size[i] / 2)
             elif self.align[i] == Align.MAX:
                 align_offset.append(-size[i])
+            elif self.align[i] == Align.NONE:
+                align_offset.append(0)
 
         self.min = Vector(*align_offset)  #: bottom left corner
         self.max = self.min + self.size  #: top right corner

diff --git a/src/build123d/build_enums.py b/src/build123d/build_enums.py
@@ -36,6 +36,7 @@ class Align(Enum):
     MIN = auto()
     CENTER = auto()
     MAX = auto()
+    NONE = auto()
 
     def __repr__(self):
         return f"<{self.__class__.__name__}.{self.name}>"

diff --git a/src/build123d/geometry.py b/src/build123d/geometry.py
@@ -1033,6 +1033,8 @@ def to_align_offset(self, align: Tuple[float, float]) -> Tuple[float, float]:
                 )
             elif align[i] == Align.MAX:
                 align_offset.append(-self.max.to_tuple()[i])
+            elif align[i] == Align.NONE:
+                align_offset.append(0)
         return align_offset
 
 

diff --git a/src/build123d/objects_part.py b/src/build123d/objects_part.py
@@ -73,6 +73,8 @@ def __init__(
                     )
                 elif align[i] == Align.MAX:
                     align_offset.append(-bbox.max.to_tuple()[i])
+                elif align[i] == Align.NONE:
+                    align_offset.append(0)
             part.move(Location(Vector(*align_offset)))
 
         context: BuildPart = BuildPart._get_context(self, log=False)

diff --git a/src/build123d/objects_sketch.py b/src/build123d/objects_sketch.py
@@ -344,6 +344,8 @@ def __init__(
                     align_offset.append(0)
                 elif align[i] == Align.MAX:
                     align_offset.append(-maxs[i])
+                elif align[i] == Align.NONE:
+                    align_offset.append(0)
         else:
             align_offset = [0, 0]
         pts = [point + Vector(*align_offset) for point in pts]
@@ -531,6 +533,8 @@ class Text(BaseSketchObject):
             text, values must be between 0.0 and 1.0. Defaults to 0.0.
         rotation (float, optional): angles to rotate objects. Defaults to 0.
         mode (Mode, optional): combination mode. Defaults to Mode.ADD.
+
+    "Align.NONE", used vertically, places the text on its baseline.
     """
 
     # pylint: disable=too-many-instance-attributes