Add shadow Font and FixedString demos (tests really) to Shapes and Fi…

…xedString

FixedString.py

@@ -24,10 +24,17 @@
 It enables both 3D and 2D
 rendering and aims to provide
 a host of exciting commands.'''
-
-str1 = pi3d.FixedString('fonts/NotoSans-Regular.ttf', mytext, font_size=32, background_color=(200,140,20,235),
-          camera=CAMERA2D, shader=flatsh, f_type='SMOOTH')
-str1.sprite.positionX(-300) #NB note Shape methods act on FixedString.sprite
+# 'normal' FixedString on a (fairly) solid background
+str1 = pi3d.FixedString('fonts/NotoSans-Regular.ttf', mytext, font_size=32, 
+                        background_color=(200,140,20,235),
+                        camera=CAMERA2D, shader=flatsh, f_type='SMOOTH')
+str1.sprite.position(-300, 0, 2) #NB note Shape methods act on FixedString.sprite
+# shadow outline FixedString to show up against light or dark backgrounds
+# try setting shadow_radius to 0 to see what the issue is
+str1a = pi3d.FixedString('fonts/NotoSans-Regular.ttf', mytext[:53], font_size=48, 
+                        color=(70, 70, 180, 255), background_color=None, shadow_radius=1, 
+                        camera=CAMERA2D, shader=flatsh, f_type='SMOOTH')
+str1a.sprite.position(50, -150, 1) #NB note Shape methods act on FixedString.sprite
 
 str2 = pi3d.FixedString('fonts/NotoSerif-Regular.ttf', mytext, font_size=24, f_type='BUMP')
 mycuboid = pi3d.Cuboid(camera=CAMERA, z=2, x=0.5)
@@ -41,7 +48,8 @@
 while DISPLAY.loop_running():
   str1.draw()
   mycuboid.draw()
-  mycuboid.rotateIncZ(0.05)
+  str1a.draw()
+  mycuboid.rotateIncX(0.091)
   mycuboid.rotateIncY(0.13)
   if mykeys.read() == 27:
     mykeys.close()

Shapes.py

@@ -62,14 +62,30 @@
 myhemisphere = pi3d.Sphere(radius=1, sides=24, slices=24, hemi=0.5, name="hsphere",
         x=4, y=-1, z=10)
 myPlane = pi3d.Plane(w=4, h=4, name="plane", z=12)
-# Load ttf font and set the font colour to 'raspberry'
-arialFont = pi3d.Font("fonts/NotoSerif-Regular.ttf", (221,0,170,255))
-mystring = pi3d.String(font=arialFont, string="Now the Raspberry Pi really does rock", z=4)
-mystring.set_shader(flatsh)
+
+# Use three ttfs fonts one with the colour 'raspberry', one with background
+# colour and one using a contrasting shadow
+txt = "Now the Raspberry Pi really does rock"
+strings = [pi3d.String(
+            font=pi3d.Font("fonts/NotoSerif-Regular.ttf", (221, 0, 170, 255)), 
+              string=txt, z=4),
+           pi3d.String(
+            font=pi3d.Font("fonts/NotoSerif-Regular.ttf", (0, 0, 26, 255)),
+              string=txt, z=4),
+           pi3d.String(
+            font=pi3d.Font("fonts/NotoSerif-Regular.ttf", (0, 0, 26, 255), 
+                              shadow=(200, 255, 0, 255), shadow_radius=1), 
+              string=txt, z=4)]
+
+for s in strings:
+  s.set_shader(flatsh)
 
 # Fetch key presses
 mykeys = pi3d.Keyboard()
+
 angl = 0.0
+i_f = 0
+i_s = 0
 # Display scene
 while DISPLAY.loop_running():
 
@@ -118,8 +134,14 @@
   mylathe.rotateIncZ(0.4)
   mylathe.rotateIncX(0.11)
 
-  mystring.draw()
-  mystring.rotateIncZ(0.5)
+  strings[i_s].draw()
+  for s in strings:
+    s.rotateIncZ(0.5)
+
+  i_f += 1
+  if i_f > 150:
+    i_f = 0
+    i_s = (i_s + 1) % 3 
 
   k = mykeys.read()
   if k >-1: