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add resistor tolerance color banding
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test committed Jun 10, 2024
1 parent cde1afc commit c7d509c
Showing 1 changed file with 54 additions and 26 deletions.
80 changes: 54 additions & 26 deletions LabelGenerator.py
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Original file line number Diff line number Diff line change
Expand Up @@ -222,16 +222,16 @@ def format_value(self) -> str:

def resistor_color_table(num: int) -> HexColor:
return [
HexColor("#000000"),
HexColor("#964B00"),
HexColor("#FF3030"),
HexColor("#FFA500"),
HexColor("#FFFF00"),
HexColor("#00FF00"),
HexColor("#0000FF"),
HexColor("#C520F6"),
HexColor("#808080"),
HexColor("#FFFFFF"),
HexColor("#000000"), # black
HexColor("#964B00"), # brown
HexColor("#FF3030"), # red
HexColor("#FFA500"), # orange
HexColor("#FFFF00"), # yellow
HexColor("#00FF00"), # green
HexColor("#0000FF"), # blue
HexColor("#C520F6"), # purple
HexColor("#808080"), # grey
HexColor("#FFFFFF"), # white
][num]


Expand Down Expand Up @@ -264,7 +264,7 @@ def draw_resistor_stripe_border(c: Canvas, x: float, y: float, width: float, hei
c.rect(x, y, width, height, fill=0, stroke=1)


def draw_resistor_stripe(c: Canvas, x: float, y: float, width: float, height: float, stripe_value: int) -> None:
def draw_resistor_stripe(c: Canvas, x: float, y: float, width: float, height: float, stripe_value: int, tolerance_color = "grey") -> None:
if 0 <= stripe_value <= 9:
c.setFillColor(resistor_color_table(stripe_value))
c.rect(x, y, width, height, fill=1, stroke=0)
Expand Down Expand Up @@ -298,11 +298,12 @@ def draw_resistor_stripe(c: Canvas, x: float, y: float, width: float, height: fl
else:

c.setLineWidth(0.5)
c.setFillColor(gray, 0.3)
#c.setFillColor(tolerance_color, 0.3)
c.setFillColor(tolerance_color, 1)
c.setStrokeColorRGB(0.5, 0.5, 0.5, 1.0)
c.rect(x, y, width, height, fill=1, stroke=1)
c.line(x, y, x + width, y + height)
c.line(x + width, y, x, y + height)
c.rect(x, y, width, height, fill=1, stroke=0)
#c.line(x, y, x + width, y + height)
#c.line(x + width, y, x, y + height)
return


Expand All @@ -315,9 +316,20 @@ def draw_resistor_colorcode(
y: float,
width: float,
height: float,
num_codes: int
num_codes: int,
tolerance_value: int,
) -> None:

tolerance_color_table = {1: HexColor("#964B00"), # "brown"
2: HexColor("#FF3030"), # "red",
0.5: HexColor("#00FF00"), # "green"
0.25: HexColor("#0000FF"), # "blue",
0.1: "violet",
5: "gold",
10: "silver"}
tolerance_color = tolerance_color_table.get(tolerance_value, "grey")


if value.ohms_exp < num_codes - 4:
return

Expand All @@ -340,7 +352,7 @@ def draw_resistor_colorcode(
y + border,
stripe_width,
height - 2 * border,
0)
0, tolerance_color)
else:
for i in range(num_codes):

Expand All @@ -357,14 +369,14 @@ def draw_resistor_colorcode(
y + border,
stripe_width,
height - 2 * border,
stripe_value)
stripe_value, tolerance_color)

draw_resistor_stripe(c,
x + width - border - corner - stripe_width * 1.5,
y + border,
stripe_width,
height - 2 * border,
-3)
-3, tolerance_color)

c.setFillColor(black)
c.setStrokeColor(black, 1)
Expand Down Expand Up @@ -480,7 +492,8 @@ def draw_resistor_sticker(
column: int,
ohms: float,
draw_center_line: bool,
mirror: bool
mirror: bool,
tolerance: int,
) -> None:
with StickerRect(c, layout, row, column, mirror) as rect:

Expand Down Expand Up @@ -525,14 +538,14 @@ def draw_resistor_sticker(
rect.left + rect.width/2,
rect.bottom + rect.height/4 - rect.height/45,
rect.width/4, rect.height/4,
3)
3, tolerance)

draw_resistor_colorcode(c, resistor_value,
toColor("hsl(197, 59%, 100%)"), toColor("hsl(197, 59%, 73%)"),
rect.left + rect.width * 0.75,
rect.bottom + rect.height/4 - rect.height/45,
rect.width/4, rect.height/4,
4)
4, tolerance)

c.setFont('Arial Bold', smd_font_size * 1.35)
c.drawString(rect.left + rect.width/2 + rect.width/32, rect.bottom +
Expand All @@ -559,7 +572,8 @@ def render_stickers(
values: ResistorList,
draw_outlines: bool,
draw_center_line: bool,
draw_both_sides: bool
draw_both_sides: bool,
tolerance: int
) -> None:
def flatten(elem: Union[Optional[float], List[Optional[float]]]) -> List[Optional[float]]:
if isinstance(elem, list):
Expand All @@ -586,9 +600,9 @@ def flatten(elem: Union[Optional[float], List[Optional[float]]]) -> List[Optiona
begin_page(c, layout, draw_outlines)

if value is not None:
draw_resistor_sticker(c, layout, rowId, columnId, value, draw_center_line, False)
draw_resistor_sticker(c, layout, rowId, columnId, value, draw_center_line, False, tolerance)
if draw_both_sides:
draw_resistor_sticker(c, layout, rowId, columnId, value, False, True)
draw_resistor_sticker(c, layout, rowId, columnId, value, False, True, tolerance)

# End the page one final time
end_page(c)
Expand Down Expand Up @@ -683,6 +697,20 @@ def main() -> None:
[9100000000, 9200000000, 3300000000],
]


# ############################################################################
# Resistor tolerance
# 1: 1% brown
# 2: 2% red
# 0.5: 0.5% green
# 0.25: 0.25% blue
# 0.1: 0.1% violet
# 5: 5% gold
# 10: 10% silver
# ############################################################################

resistor_tolerance = 1 # in percentage

# ############################################################################
# Alternatively, a set of common resistor values can be generated by the
# generate_values function.
Expand Down Expand Up @@ -719,7 +747,7 @@ def main() -> None:
c = Canvas("ResistorLabels.pdf", pagesize=layout.pagesize)

# Render the stickers
render_stickers(c, layout, resistor_values, draw_outlines, draw_center_line, draw_both_sides)
render_stickers(c, layout, resistor_values, draw_outlines, draw_center_line, draw_both_sides, resistor_tolerance)

# Store canvas to PDF file
c.save()
Expand Down

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