🔀 Merge pull request #18 from davep/location-display

Have the position display adapt to the zoom level

Author: davep

ChangeLog.md

@@ -8,6 +8,8 @@
   ([#9](https://github.com/davep/complexitty/pull/9))
 - Fixed the `--zoom` command line switch so that it accepts floating point
   values. ([#11](https://github.com/davep/complexitty/issues/11))
+- Changed the display of the X/Y location so that the precision adapts to
+  the zoom level. ([#14](https://github.com/davep/complexitty/issues/14))
 
 ## v0.2.0
 

src/complexitty/screens/main.py

@@ -3,6 +3,7 @@
 ##############################################################################
 # Python imports.
 from argparse import Namespace
+from math import floor, log10
 from re import Pattern, compile
 from typing import Final
 
@@ -145,8 +146,18 @@ def _update_situation(self, message: Mandelbrot.Plotted) -> None:
         Args:
             message: The message letting us know the plot finished.
         """
+        x_precision = (
+            -floor(log10(abs(message.mandelbrot.x_pixel_size)))
+            if message.mandelbrot.x_pixel_size
+            else 0
+        )
+        y_precision = (
+            -floor(log10(abs(message.mandelbrot.y_pixel_size)))
+            if message.mandelbrot.y_pixel_size
+            else 0
+        )
         message.mandelbrot.border_title = (
-            f"X: {message.mandelbrot.x_position:.10f} | Y: {message.mandelbrot.y_position:.10f} "
+            f"X: {message.mandelbrot.x_position:.{x_precision + 2}f} | Y: {message.mandelbrot.y_position:.{y_precision + 2}f} "
             f"| Zoom: {message.mandelbrot.zoom:.4f}"
         )
         message.mandelbrot.border_subtitle = (