Report

Report/uml/line-rasterization-flow.puml

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+@startuml
+title Линия: полная схема растризации
+
+start
+:Input local endpoints (x0,y0),(x1,y1)\n+ color + thickness;
+:Map endpoints Local -> World -> Buffer;
+:Compute pixel thickness from transform scale;
+if (thickness_px <= 0?) then (yes)
+  stop
+endif
+
+if (draw_when_outside == false?) then (yes)
+  :Clip segment to expanded buffer bounds\n(Liang-Barsky);
+  if (segment rejected?) then (yes)
+    stop
+  endif
+endif
+
+:Compute angle-based thickness correction\n(using |dx|/len and |dy|/len);
+:Initialize Bresenham state\ndx,dy,sx,sy,err;
+
+while (not reached end point?)
+  :Choose effective half-thickness:\nfull in viewport, 0 outside if draw_when_outside;
+  :Draw stripe around center pixel\n(along normal axis);
+  :Advance Bresenham step by error update;
+endwhile
+
+stop
+
+@enduml