feat(pygal): implement maze-printable

[github-actions]

Implementation: maze-printable - pygal

Implements the pygal version of maze-printable.

File: plots/maze-printable/implementations/pygal.py

Parent Issue: #3232

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🤖 impl-generate workflow

[claude]

AI Review - Attempt 1/3

Image Description

The plot displays a 25x25 maze puzzle rendered using pygal's Dot chart. Black dots represent walls arranged in a grid pattern on a white background. The maze has a clear entrance at the top-left (opening in the border) and exit at the bottom-right (opening in the border). The maze structure shows interconnected passages formed by the absence of dots, creating a solvable path. The title "maze-printable · pygal · pyplots.ai" appears at the top in a clean, readable font. The overall design is black-and-white, print-friendly, with the maze filling the canvas well and good margins around the edges.

Quality Score: 85/100

Criteria Checklist

Visual Quality (34/40 pts)

• VQ-01: Text Legibility (8/10) - Title is readable but could be larger for the canvas size
• VQ-02: No Overlap (8/8) - No overlapping elements, clean dot grid
• VQ-03: Element Visibility (8/8) - Dots are well-sized, walls clearly visible, passages distinguishable
• VQ-04: Color Accessibility (5/5) - Pure black on white, perfect contrast for printing
• VQ-05: Layout Balance (3/5) - Good use of canvas but maze could fill slightly more area
• VQ-06: Axis Labels (2/2) - N/A for maze (no axes needed), full points
• VQ-07: Grid & Legend (0/2) - No legend needed, but lack of S/G markers reduces utility

Spec Compliance (20/25 pts)

• SC-01: Plot Type (8/8) - Correct maze visualization using dot chart creatively
• SC-02: Data Mapping (5/5) - Walls correctly mapped to dots, passages to empty spaces
• SC-03: Required Features (2/5) - Missing "S" (start) and "G" (goal) markers as specified
• SC-04: Data Range (3/3) - Full maze visible with entrance and exit openings
• SC-05: Legend Accuracy (0/2) - N/A but start/goal should be marked
• SC-06: Title Format (2/2) - Correct format: maze-printable · pygal · pyplots.ai

Data Quality (18/20 pts)

• DQ-01: Feature Coverage (7/8) - Shows solvable maze with single path, but lacks marked start/goal
• DQ-02: Realistic Context (7/7) - Perfect printable puzzle scenario
• DQ-03: Appropriate Scale (4/5) - 25x25 grid is good complexity, dots slightly large

Code Quality (10/10 pts)

• CQ-01: KISS Structure (3/3) - Clean linear structure: imports → data → plot → save
• CQ-02: Reproducibility (3/3) - np.random.seed(42) set
• CQ-03: Clean Imports (2/2) - Only necessary imports
• CQ-04: No Deprecated API (1/1) - Current API usage
• CQ-05: Output Correct (1/1) - Saves as plot.png and plot.html

Library Features (3/5 pts)

• LF-01: Uses distinctive library features (3/5) - Creative use of Dot chart for grid visualization, custom Style, but pygal isn't ideal for this use case

Strengths

• Creative adaptation of pygal's Dot chart to render a maze grid
• Excellent DFS maze generation algorithm ensuring single solution path
• Clean black-and-white print-friendly design
• Proper seed for reproducibility
• Good use of custom Style for consistent appearance

Weaknesses

• Missing "S" (start) and "G" (goal) markers as specified in the spec
• Title font size could be larger relative to the large canvas
• Dot chart approach results in circular walls rather than solid lines (less traditional maze appearance)

Verdict: REJECTED

[github-actions]

🔧 Repair Attempt 1/3

Applied fixes based on AI review feedback.

Status: Repair completed, re-triggering review...

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🤖 impl-repair

[claude]

AI Review - Attempt 2/3

Image Description

The plot displays a 25x25 printable maze puzzle rendered using pygal's Dot chart. The maze consists of black circular dots forming the walls on a white background, creating clear passages between them. The title "maze-printable · pygal · pyplots.ai" appears at the top in a clean monospace font. An "S" marker indicates the start position near the top-left corner (with an entrance gap at the top border), and a "G" marker indicates the goal position near the bottom-right corner (with an exit gap at the bottom border). The maze uses the square 3600×3600 format, with the maze grid filling the canvas well. The black-and-white design is print-friendly with good contrast.

Quality Score: 90/100

Criteria Checklist

Visual Quality (36/40 pts)

• VQ-01: Text Legibility (8/10) - Title is clearly readable. S and G markers are visible but could be slightly larger for better visibility. The markers are functional but not optimally sized.
• VQ-02: No Overlap (8/8) - No overlapping elements; walls and passages are clearly distinguished
• VQ-03: Element Visibility (8/8) - Dot size (32) creates clear walls with appropriate passage widths for pen/pencil marking
• VQ-04: Color Accessibility (5/5) - Pure black on white provides maximum contrast and is colorblind-safe
• VQ-05: Layout Balance (5/5) - Maze fills canvas well with balanced margins; good use of square format
• VQ-06: Axis Labels (0/2) - N/A for maze (no axes needed); no deduction appropriate for this plot type
• VQ-07: Grid & Legend (2/2) - No grid or legend needed for maze; clean implementation

Spec Compliance (25/25 pts)

• SC-01: Plot Type (8/8) - Correct maze puzzle visualization using creative dot-based approach
• SC-02: Data Mapping (5/5) - Walls correctly mapped as black dots, passages as empty space
• SC-03: Required Features (5/5) - Has entrance, exit, S marker, G marker, guaranteed single solution via DFS
• SC-04: Data Range (3/3) - 25x25 grid as specified, properly bounded
• SC-05: Legend Accuracy (2/2) - N/A for maze; S and G markers serve as legend
• SC-06: Title Format (2/2) - Correct format: "maze-printable · pygal · pyplots.ai"

Data Quality (17/20 pts)

• DQ-01: Feature Coverage (7/8) - Shows maze with entrance, exit, start/goal markers, solvable paths; slight deduction for marker visibility
• DQ-02: Realistic Context (7/7) - Printable maze puzzle is a real, neutral application per spec
• DQ-03: Appropriate Scale (3/5) - 25x25 is within recommended range; passages are slightly tight for comfortable pen marking

Code Quality (9/10 pts)

• CQ-01: KISS Structure (3/3) - Linear script without functions/classes
• CQ-02: Reproducibility (3/3) - Uses np.random.seed(42)
• CQ-03: Clean Imports (1/2) - os import used only for cleanup; minor redundancy
• CQ-04: No Deprecated API (1/1) - Uses current pygal API
• CQ-05: Output Correct (1/1) - Saves as plot.png and plot.html

Library Features (3/5 pts)

• LF-01: Uses distinctive library features (3/5) - Creative use of Dot chart for maze visualization; SVG manipulation for markers shows advanced usage, but approach is somewhat unconventional for pygal

Strengths

• Creative adaptation of pygal's Dot chart for maze rendering
• Proper DFS maze generation algorithm ensuring single solution
• Clean black-and-white design optimized for printing
• Correct title format and square aspect ratio
• SVG post-processing to add S/G markers at calculated positions
• Proper entrance and exit gaps at maze borders

Weaknesses

• S and G markers could be slightly more prominent (larger font size would improve visibility)
• Passage width is adequate but on the tighter side for comfortable pen/pencil marking

Verdict: APPROVED