fix draw text newline and improve fast visualise

Author: Simul-Eqn

src/turtlethread/text.py

@@ -30,7 +30,7 @@ def __init__(self, fontpath, outfolder):
 
 
 class LetterDrawer(): 
-    letter_gap = 0.03 
+    letter_gap = -0.1 
     line_spacing = 1.15 
 
     def __init__(self, turtle, load_common_fonts:bool=False): 
@@ -275,7 +275,7 @@ def draw_string(self, fontname, string, fontsize, colours='#000000', thicknesses
             if string[cidx] in ['\n', '\r']: 
                 # newline 
                 with turtle.jump_stitch(): 
-                    starty -= fontsize*LetterDrawer.line_spacing
+                    starty += fontsize*LetterDrawer.line_spacing
                     turtle.goto(startx, starty) 
                 continue 
             if isinstance(colours, str): 
@@ -312,7 +312,7 @@ def draw_string(self, fontname, string, fontsize, colours='#000000', thicknesses
         if string[cidx] in ['\n', '\r']: 
             # newline 
             with turtle.jump_stitch(): 
-                starty -= fontsize*LetterDrawer.line_spacing
+                starty += fontsize*LetterDrawer.line_spacing
                 turtle.goto(startx, starty) 
         else: 
             if isinstance(colours, str): 

src/turtlethread/turtle.py

@@ -530,7 +530,7 @@ def visualise(self, turtle=None, width=800, height=800, scale=1, speed=6, trace_
             # Errors when you close the window! Yikes
             pass
 
-    def fast_visualise(self, turtle=None, width=800, height=800, scale=1, speed=6, trace_jump=False, skip=False, check_density=True, done=True, bye=True):
+    def fast_visualise(self, turtle=None, width=800, height=800, scale=1, speed=6, extra_speed=1, trace_jump=False, skip=False, check_density=True, done=True, bye=True):
         """A fast version of the visualise() function, though it has undergone less testing.
 
         Parameters
@@ -562,7 +562,7 @@ def fast_visualise(self, turtle=None, width=800, height=800, scale=1, speed=6, t
         try:
             fast_visualise(
                 self,
-                turtle=turtle, width=width, height=height, scale=scale, speed=speed, trace_jump=trace_jump, skip=skip, 
+                turtle=turtle, width=width, height=height, scale=scale, speed=speed, extra_speed=extra_speed, trace_jump=trace_jump, skip=skip, 
                 check_density=check_density, done=done, bye=bye
             )
         except Exception as e:

src/turtlethread/visualise.py

@@ -359,7 +359,7 @@ def density_from_points(pts, dist=0.5, num=20):
 
 
 from . import stitches 
-def fast_visualise(te, turtle=None, width=800, height=800, scale=1, speed=6, trace_jump=False, skip=False,
+def fast_visualise(te, turtle=None, width=800, height=800, scale=1, speed=0, extra_speed=1, trace_jump=False, skip=False,
                       check_density=True, done=True, bye=True):
     """Use the builtin ``turtle`` library to visualise an embroidery pattern.
 
@@ -517,8 +517,9 @@ def fast_visualise(te, turtle=None, width=800, height=800, scale=1, speed=6, tra
         #speedup |= isinstance(te.pattern.stitch_groups[i]._parent_stitch_group, stitches.SatinStitch) 
         speedup = te.pattern.stitch_groups[i].__class__.speedup 
         if speedup: 
-            prev_refresh_rate = turtle._tracer() 
-            turtle._tracer(prev_refresh_rate+speedup)
+            turtle._tracer(extra_speed+speedup)
+        else: 
+            turtle._tracer(extra_speed)
 
         #for x, y, command in progressbar(pattern.stitches):
         for x, y, command in te.pattern.get_pyembroidery_of(i).stitches: 
@@ -572,8 +573,6 @@ def fast_visualise(te, turtle=None, width=800, height=800, scale=1, speed=6, tra
                 raise_error = True
                 break
 
-        if speedup: 
-            turtle._tracer(prev_refresh_rate)
 
     if skip:
         turtle._update()