Sieć trakcyjna: przęsła wg typów sieci, wysięgniki z katalogu, bramki, kotwienia i edytor sieci

Sam kod exe z gałęzi siec-trakcyjna (bez testów, notatek i danych z tests/catenary).
Dane (data/traction_*.txt) leżą poza repozytorium.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019Tqn7T8D1Gx3ptKtZgNtX5

shaders/mat_wire.frag

@@ -0,0 +1,57 @@
+in vec3 f_normal;
+in vec2 f_coord;
+in vec4 f_pos;
+
+in vec4 f_clip_pos;
+in vec4 f_clip_future_pos;
+
+#include <common>
+
+// overhead line wires, ropes and fittings drawn as solids: untextured metal.
+// param[0].rgb - metal colour (sRGB), param[0].a - opacity
+// param[1].x - colour intensity, param[1].y - metalness, param[1].z - reflection, param[1].w - glossiness
+#param (color, 0, 0, 4, diffuse)
+#param (diffuse, 1, 0, 1, diffuse)
+#param (specular, 1, 1, 1, specular)
+#param (reflection, 1, 2, 1, zero)
+#param (glossiness, 1, 3, 1, glossiness)
+
+layout(location = 0) out vec4 out_color;
+#if MOTIONBLUR_ENABLED
+layout(location = 1) out vec4 out_motion;
+#endif
+
+#include <light_common.glsl>
+#include <apply_fog.glsl>
+#include <tonemapping.glsl>
+
+void main()
+{
+	// no texture: the metal colour alone makes the albedo, apply_lights() applies it to the white base
+	vec4 tex_color = vec4(1.0, 1.0, 1.0, param[0].a);
+
+	vec3 fragcolor = ambient;
+	vec3 fragnormal = normalize(f_normal);
+	float reflectivity = param[1].z;
+	// bare metal: the colour tints the highlights instead of the diffuse term
+	metalic = clamp(param[1].y, 0.0, 1.0);
+	float specularity = dot(pow(param[0].rgb, vec3(2.2)), vec3(0.5));
+	glossiness = abs(param[1].w);
+
+	fragcolor = apply_lights(fragcolor, fragnormal, tex_color.rgb, reflectivity, specularity, shadow_tone);
+
+	vec4 color = vec4(apply_fog(fragcolor), tex_color.a * alpha_mult);
+#if POSTFX_ENABLED
+    out_color = color;
+#else
+    out_color = tonemap(color);
+#endif
+#if MOTIONBLUR_ENABLED
+	{
+        vec2 a = (f_clip_future_pos.xy / f_clip_future_pos.w) * 0.5 + 0.5;;
+        vec2 b = (f_clip_pos.xy / f_clip_pos.w) * 0.5 + 0.5;;
+        
+        out_motion = vec4(a - b, 0.0f, 0.0f);
+	}
+#endif
+}