+import math
+from typing import Optional, Tuple
+
from displayio import Bitmap
import circuitpython_typing
+
def fill_region(dest_bitmap: Bitmap, x1: int, y1: int, x2: int, y2: int, value: int):
for y in range(y1, y2):
for x in range(x1, x2):
- dest_bitmap[x,y] = value
+ dest_bitmap[x, y] = value
+
def draw_line(dest_bitmap: Bitmap, x1: int, y1: int, x2: int, y2: int, value: int):
dx = abs(x2 - x1)
error += dx
y1 += sy
+
def draw_circle(dest_bitmap: Bitmap, x: int, y: int, radius: int, value: int):
x = max(0, min(x, dest_bitmap.width - 1))
y = max(0, min(y, dest_bitmap.height - 1))
xs: circuitpython_typing.ReadableBuffer,
ys: circuitpython_typing.ReadableBuffer,
value: int, close: bool | None = True):
-
if len(xs) != len(ys):
raise ValueError("Length of xs and ys must be equal.")
- for i in range(len(xs)-1):
+ for i in range(len(xs) - 1):
cur_point = (xs[i], ys[i])
- next_point = (xs[i+1], ys[i+1])
+ next_point = (xs[i + 1], ys[i + 1])
print(f"cur: {cur_point}, next: {next_point}")
draw_line(dest_bitmap=dest_bitmap,
x1=cur_point[0], y1=cur_point[1],
x2=xs[-1], y2=ys[-1],
value=value)
+
def blit(dest_bitmap: Bitmap, source_bitmap: Bitmap,
x: int, y: int, *,
x1: int = 0, y1: int = 0,
x2: int | None = None, y2: int | None = None,
skip_source_index: int | None = None,
skip_dest_index: int | None = None):
-
"""Inserts the source_bitmap region defined by rectangular boundaries"""
# pylint: disable=invalid-name
if x2 is None:
# get the palette index from the source bitmap
this_pixel_color = source_bitmap[
y1 + (y_count * source_bitmap.width) + x1 + x_count
- ]
+ ]
if (skip_source_index is None) or (this_pixel_color != skip_source_index):
- if (skip_dest_index is None) or (dest_bitmap[y_placement * dest_bitmap.width + x_placement] != skip_dest_index):
+ if (skip_dest_index is None) or (
+ dest_bitmap[y_placement * dest_bitmap.width + x_placement] != skip_dest_index):
dest_bitmap[ # Direct index into a bitmap array is speedier than [x,y] tuple
y_placement * dest_bitmap.width + x_placement
- ] = this_pixel_color
+ ] = this_pixel_color
elif y_placement > dest_bitmap.height:
- break
\ No newline at end of file
+ break
+
+
+def rotozoom(
+ dest_bitmap,
+ source_bitmap,
+ *,
+ ox: int,
+ oy: int,
+ dest_clip0: Tuple[int, int],
+ dest_clip1: Tuple[int, int],
+ px: int,
+ py: int,
+ source_clip0: Tuple[int, int],
+ source_clip1: Tuple[int, int],
+ angle: float,
+ scale: float,
+ skip_index: int,
+):
+ dest_clip0_x, dest_clip0_y = dest_clip0
+ dest_clip1_x, dest_clip1_y = dest_clip1
+ source_clip0_x, source_clip0_y = source_clip0
+ source_clip1_x, source_clip1_y = source_clip1
+
+ minx = dest_clip1_x
+ miny = dest_clip1_y
+ maxx = dest_clip0_x
+ maxy = dest_clip0_y
+
+ sin_angle = math.sin(angle)
+ cos_angle = math.cos(angle)
+
+ def update_bounds(dx, dy):
+ nonlocal minx, maxx, miny, maxy
+ if dx < minx:
+ minx = int(dx)
+ if dx > maxx:
+ maxx = int(dx)
+ if dy < miny:
+ miny = int(dy)
+ if dy > maxy:
+ maxy = int(dy)
+
+ w = source_bitmap.width
+ h = source_bitmap.height
+
+ dx = -cos_angle * px * scale + sin_angle * py * scale + ox
+ dy = -sin_angle * px * scale - cos_angle * py * scale + oy
+ update_bounds(dx, dy)
+
+ dx = cos_angle * (w - px) * scale + sin_angle * py * scale + ox
+ dy = sin_angle * (w - px) * scale - cos_angle * py * scale + oy
+ update_bounds(dx, dy)
+
+ dx = cos_angle * (w - px) * scale - sin_angle * (h - py) * scale + ox
+ dy = sin_angle * (w - px) * scale + cos_angle * (h - py) * scale + oy
+ update_bounds(dx, dy)
+
+ dx = -cos_angle * px * scale - sin_angle * (h - py) * scale + ox
+ dy = -sin_angle * px * scale + cos_angle * (h - py) * scale + oy
+ update_bounds(dx, dy)
+
+ # Clip to destination area
+ minx = max(minx, dest_clip0_x)
+ maxx = min(maxx, dest_clip1_x - 1)
+ miny = max(miny, dest_clip0_y)
+ maxy = min(maxy, dest_clip1_y - 1)
+
+ dv_col = cos_angle / scale
+ du_col = sin_angle / scale
+ du_row = dv_col
+ dv_row = -du_col
+
+ startu = px - (ox * dv_col + oy * du_col)
+ startv = py - (ox * dv_row + oy * du_row)
+
+ rowu = startu + miny * du_col
+ rowv = startv + miny * dv_col
+
+ for y in range(miny, maxy + 1):
+ u = rowu + minx * du_row
+ v = rowv + minx * dv_row
+ for x in range(minx, maxx + 1):
+ if (source_clip0_x <= u < source_clip1_x) and (source_clip0_y <= v < source_clip1_y):
+ c = source_bitmap[int(u), int(v)]
+ if skip_index is None or c != skip_index:
+ dest_bitmap[x, y] = c
+ u += du_row
+ v += dv_row
+ rowu += du_col
+ rowv += dv_col
projects / hackapet / Adafruit_Blinka_Displayio.git / blobdiff