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Initial commit: ESP32-S3-RLCD-4.2 hardware utility classes and demo

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Adolfo Reyna
2026-05-31 22:44:49 -04:00
commit 558ee43149
14 changed files with 1295 additions and 0 deletions
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vector.py
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# Simple Vector (Stroke) Font Engine with THICKNESS support
# Format: [x1,y1, x2,y2, x3,y3...] (-1 = Pen Lift)
FONT = {
'A': [0,10, 5,0, 10,10, -1,-1, 2,7, 8,7],
'B': [0,10, 0,0, 7,0, 7,5, 0,5, -1,-1, 0,5, 8,5, 8,10, 0,10],
'C': [10,2, 8,0, 2,0, 0,2, 0,8, 2,10, 8,10, 10,8],
'D': [0,10, 0,0, 6,0, 9,3, 9,7, 6,10, 0,10],
'E': [10,0, 0,0, 0,10, 10,10, -1,-1, 0,5, 8,5],
'F': [0,10, 0,0, 9,0, -1,-1, 0,5, 8,5],
'G': [10,2, 8,0, 2,0, 0,2, 0,8, 2,10, 8,10, 10,8, 10,5, 6,5],
'H': [0,0, 0,10, -1,-1, 10,0, 10,10, -1,-1, 0,5, 10,5],
'I': [5,0, 5,10, -1,-1, 2,0, 8,0, -1,-1, 2,10, 8,10],
'J': [8,0, 8,8, 6,10, 2,10, 0,8],
'K': [0,0, 0,10, -1,-1, 9,0, 0,5, 9,10],
'L': [0,0, 0,10, 9,10],
'M': [0,10, 0,0, 5,5, 10,0, 10,10],
'N': [0,10, 0,0, 10,10, 10,0],
'O': [5,0, 10,2, 10,8, 5,10, 0,8, 0,2, 5,0],
'P': [0,10, 0,0, 8,0, 8,5, 0,5],
'Q': [5,0, 10,2, 10,8, 5,10, 0,8, 0,2, 5,0, -1,-1, 6,6, 10,10],
'R': [0,10, 0,0, 8,0, 8,5, 0,5, -1,-1, 4,5, 9,10],
'S': [9,2, 5,0, 1,2, 1,4, 5,5, 9,6, 9,8, 5,10, 1,8],
'T': [5,0, 5,10, -1,-1, 0,0, 10,0],
'U': [0,0, 0,8, 2,10, 8,10, 10,8, 10,0],
'V': [0,0, 5,10, 10,0],
'W': [0,0, 2,10, 5,6, 8,10, 10,0],
'X': [0,0, 10,10, -1,-1, 10,0, 0,10],
'Y': [0,0, 5,5, 10,0, -1,-1, 5,5, 5,10],
'Z': [0,0, 10,0, 0,10, 10,10],
'0': [5,0, 10,2, 10,8, 5,10, 0,8, 0,2, 5,0, -1,-1, 0,10, 10,0],
'1': [2,2, 5,0, 5,10, -1,-1, 2,10, 8,10],
'2': [0,2, 5,0, 10,2, 10,5, 0,10, 10,10],
'3': [0,2, 5,0, 10,2, 10,4, 6,5, 10,6, 10,8, 5,10, 0,8],
'4': [7,10, 7,0, -1,-1, 0,0, 0,5, 10,5],
'5': [9,0, 1,0, 1,4, 5,3, 9,4, 9,8, 5,10, 1,8],
'6': [9,0, 1,4, 1,8, 5,10, 9,8, 9,5, 1,5],
'7': [0,0, 10,0, 4,10],
'8': [5,0, 10,2, 10,4, 5,5, 10,6, 10,8, 5,10, 0,8, 0,6, 5,5, 0,4, 0,2, 5,0],
'9': [1,10, 9,6, 9,2, 5,0, 1,2, 1,5, 9,5],
'.': [4,10, 6,10, 6,8, 4,8, 4,10],
':': [4,2, 4,4, 5,4, 5,2, 6,2, 6,4, -1,-1, 4,8, 4,10, 5,10, 5,8, 6,8, 6,10],
'-': [1,5, 9,5],
' ': []
}
def draw(display, text, x, y, scale=1, c=1, thickness=1):
start_x = x
char_width = 12 * scale
for char in text:
char = char.upper()
if char == '\n':
y += 15 * scale
x = start_x
continue
if char == ' ':
x += char_width
continue
if char in FONT:
strokes = FONT[char]
if len(strokes) > 1:
curr_x = strokes[0]
curr_y = strokes[1]
i = 2
while i < len(strokes):
next_x = strokes[i]
next_y = strokes[i+1]
if next_x == -1: # Pen Lift
i += 2
if i < len(strokes):
curr_x = strokes[i]
curr_y = strokes[i+1]
i += 2
continue
# Calculate scaled coordinates
x1 = int(x + curr_x * scale)
y1 = int(y + curr_y * scale)
x2 = int(x + next_x * scale)
y2 = int(y + next_y * scale)
# Draw Main Line
display.line(x1, y1, x2, y2, c)
# Draw Thick Lines (Offset by 1px)
if thickness > 1:
# Draw parallel line X+1
display.line(x1+1, y1, x2+1, y2, c)
if thickness > 2:
# Draw parallel line Y+1
display.line(x1, y1+1, x2, y2+1, c)
if thickness > 3:
# Draw parallel line X+1, Y+1
display.line(x1+1, y1+1, x2+1, y2+1, c)
curr_x = next_x
curr_y = next_y
i += 2
x += char_width