Merge pull request #6 from FoamyGuy/bitmaptools_scale

Bitmaptools scale examples and format all bitmaptools examples

Author: tannewt

bitmaptools/Billie.bmp.license

@@ -1,3 +1,3 @@
 # SPDX-FileCopyrightText: Copyright (c) 2018 Adafruit Industries
 #
-# SPDX-License-Identifier: MIT
+# SPDX-License-Identifier: MIT

bitmaptools/bitmaptools_rotate_bmp.py

@@ -5,23 +5,25 @@
 Use bitmaptools.rotozoom() to rotate a bmp image.
 """
 importmath
-importbitmaptools
 importboard
-importdisplayio
 importadafruit_imageload
+importdisplayio
+importbitmaptools
 
 # use the builtin display
 display=board.DISPLAY
 
 # load bmp image into a Bitmap and Palette objects
-source_bitmap, source_palette=adafruit_imageload.load("Billie.bmp",
-bitmap=displayio.Bitmap,
-palette=displayio.Palette)
+source_bitmap, source_palette=adafruit_imageload.load(
+"Billie.bmp", bitmap=displayio.Bitmap,palette=displayio.Palette
+)
 # Create a TileGrid to show the bitmap
 source_tile_grid=displayio.TileGrid(source_bitmap, pixel_shader=source_palette)
 
 # Create destination Bitmap object to hold the rotated image
-dest_bitmap=displayio.Bitmap(source_bitmap.height, source_bitmap.height, len(source_palette))
+dest_bitmap=displayio.Bitmap(
+source_bitmap.height, source_bitmap.height, len(source_palette)
+)
 
 # Create a TileGrid to show the destination Bitmap with the rotated image in it
 dest_tile_grid=displayio.TileGrid(dest_bitmap, pixel_shader=source_palette)

bitmaptools/bitmaptools_rotate_bmp_animated.py

@@ -5,23 +5,25 @@
 Use bitmaptools.rotozoom() to rotate a bmp image in a circle animated.
 """
 importmath
-importbitmaptools
 importboard
-importdisplayio
 importadafruit_imageload
+importbitmaptools
+importdisplayio
 
 # use the builtin display
 display=board.DISPLAY
 
 # load bmp image into a Bitmap and Palette objects
-source_bitmap, source_palette=adafruit_imageload.load("Billie.bmp",
-bitmap=displayio.Bitmap,
-palette=displayio.Palette)
+source_bitmap, source_palette=adafruit_imageload.load(
+"Billie.bmp", bitmap=displayio.Bitmap,palette=displayio.Palette
+)
 # Create a TileGrid to show the bitmap
 source_tile_grid=displayio.TileGrid(source_bitmap, pixel_shader=source_palette)
 
 # Create destination Bitmap object to hold the rotated image
-dest_bitmap=displayio.Bitmap(source_bitmap.height, source_bitmap.height, len(source_palette))
+dest_bitmap=displayio.Bitmap(
+source_bitmap.height, source_bitmap.height, len(source_palette)
+)
 
 # Create a TileGrid to show the destination Bitmap with the rotated image in it
 dest_tile_grid=displayio.TileGrid(dest_bitmap, pixel_shader=source_palette)

bitmaptools/bitmaptools_scale_bmp.py

@@ -0,0 +1,78 @@
+# SPDX-FileCopyrightText: Copyright (c) 2022 Tim Cocks
+#
+# SPDX-License-Identifier: MIT
+"""
+Use bitmaptools.rotozoom() to scale a bmp image and show multiple sizes of it on the display.
+"""
+importboard
+importadafruit_imageload
+importbitmaptools
+importdisplayio
+
+# use the builtin display
+display=board.DISPLAY
+
+# load bmp image into a Bitmap and Palette objects
+source_bitmap, source_palette=adafruit_imageload.load(
+"Billie.bmp", bitmap=displayio.Bitmap, palette=displayio.Palette
+)
+
+# Create destination Bitmap object to hold the rotated image
+dest_bitmap=displayio.Bitmap(
+source_bitmap.height*2, source_bitmap.height*2, len(source_palette)
+)
+
+# Create a TileGrid to show the destination Bitmap with the rotated image in it
+dest_tile_grid=displayio.TileGrid(dest_bitmap, pixel_shader=source_palette)
+
+# rotozoom() takes from source bitmap, puts into destination bitmap.
+# clipping is not used so whole source image is put into the destination bitmap.
+# scale argument accepts a float number that will multiply the size of the source bitmap times
+# the scale factor.
+
+# Big Billie
+BIG_BILLIE_SCALE=1.75
+bitmaptools.rotozoom(
+dest_bitmap,
+source_bitmap,
+ox=int(dest_bitmap.width- ((source_bitmap.width/2) *BIG_BILLIE_SCALE)),
+oy=int((source_bitmap.height/2) *BIG_BILLIE_SCALE),
+scale=BIG_BILLIE_SCALE,
+)
+
+# Normal sized Billie
+NORMAL_BILLIE_SCALE=1.0
+bitmaptools.rotozoom(
+dest_bitmap,
+source_bitmap,
+ox=int(dest_bitmap.width/2) -24,
+oy=int((source_bitmap.height/2) *NORMAL_BILLIE_SCALE),
+scale=NORMAL_BILLIE_SCALE,
+)
+
+# Little Billie
+LITTLE_BILLY_SCALE=0.5
+bitmaptools.rotozoom(
+dest_bitmap,
+source_bitmap,
+ox=int((source_bitmap.width/2) *LITTLE_BILLY_SCALE),
+oy=int((source_bitmap.height/2) *LITTLE_BILLY_SCALE),
+scale=LITTLE_BILLY_SCALE,
+)
+
+# move the destination image out of the corner a little
+dest_tile_grid.x=10
+dest_tile_grid.y=10
+
+# Create a Group to show the TileGrid
+group=displayio.Group()
+
+# Add the TileGrid to the Group
+group.append(dest_tile_grid)
+
+# Add the Group to the Display
+display.show(group)
+
+# Loop forever so you can enjoy your image
+whileTrue:
+pass

bitmaptools/bitmaptools_scale_bmp_animated.py

@@ -0,0 +1,73 @@
+# SPDX-FileCopyrightText: Copyright (c) 2022 Tim Cocks
+#
+# SPDX-License-Identifier: MIT
+"""
+Use bitmaptools.rotozoom() to scale a bmp image and show multiple sizes of it on the display.
+"""
+importboard
+importadafruit_imageload
+importbitmaptools
+importdisplayio
+
+# use the builtin display
+display=board.DISPLAY
+
+# load bmp image into a Bitmap and Palette objects
+source_bitmap, source_palette=adafruit_imageload.load(
+"Billie.bmp", bitmap=displayio.Bitmap, palette=displayio.Palette
+)
+
+# Create destination Bitmap object to hold the rotated image
+dest_bitmap=displayio.Bitmap(
+source_bitmap.height*2, source_bitmap.height*2, len(source_palette)
+)
+
+# Create a TileGrid to show the destination Bitmap with the rotated image in it
+dest_tile_grid=displayio.TileGrid(dest_bitmap, pixel_shader=source_palette)
+
+# rotozoom() takes from source bitmap, puts into destination bitmap.
+# clipping is not used so whole source image is put into the destination bitmap.
+# scale argument accepts a float number that will multiply the size of the source bitmap times
+# the scale factor.
+INITIAL_SCALE=0.5
+bitmaptools.rotozoom(dest_bitmap, source_bitmap, scale=INITIAL_SCALE)
+
+# move the destination image out of the corner a little
+dest_tile_grid.x=10
+dest_tile_grid.y=10
+
+# Create a Group to show the TileGrid
+group=displayio.Group()
+
+# Add the TileGrid to the Group
+group.append(dest_tile_grid)
+
+# Add the Group to the Display
+display.show(group)
+
+# we will manually refresh the display only after we make changes to our destination bitmap
+display.auto_refresh=False
+
+# Loop forever
+whileTrue:
+# loop from 0.5 to 2.0 scale factors. step size 0.1
+forscaleinrange(5, 21):
+# empty the destination bitmap, clear out the previously drawn frame
+dest_bitmap.fill(0)
+
+# paste in billie at the current scale size from our loop
+bitmaptools.rotozoom(dest_bitmap, source_bitmap, scale=scale/10)
+
+# refresh the display to draw our changes
+display.refresh()
+
+# loop from 2.0 to 0.5 scale factors. step size 0.1
+forscaleinrange(20, 4, -1):
+# empty the destination bitmap, clear out the previously drawn frame
+dest_bitmap.fill(0)
+
+# paste in billie at the current scale size from our loop
+bitmaptools.rotozoom(dest_bitmap, source_bitmap, scale=scale/10)
+
+# refresh the display to draw our changes
+display.refresh()