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Code Issues 150 Wiki Activity

refactor(track): a lofted rail span is described by one loft_span value instead of twenty arguments, and the knot line helpers (sample, bound, meetings, middle, shifted) live once in world/Knots.h instead of in lambdas of the segment and of lay_rail

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maj00r
2026-10-14 09:16:37 +02:00
parent 9a8cc08494
commit 347d9035e0
4 changed files with 243 additions and 167 deletions
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27
world/Segment.h
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@@ -13,6 +13,7 @@ http://mozilla.org/MPL/2.0/.
#include "rendering/geometrybank.h"
#include <glm/glm.hpp>
#include <optional>
#include "world/Knots.h"
struct map_colored_paths {
std::vector<gfx::geometrybank_handle> switches;
@@ -21,6 +22,30 @@ struct map_colored_paths {
std::vector<gfx::geometrybank_handle> highlighted;
};
struct loft_end {
double bend { 0.0 };
knots::line fit;
};
struct loft_span {
int side { 1 };
float halfwidth { 0.f };
double texturelength { 1.0 };
double from { 0.0 };
double to { 0.0 };
knots::line offsets;
knots::line extents;
knots::line inner;
float lift { 0.f };
gfx::userdata_array *userdata { nullptr };
knots::line ramp;
double rampwidth { 0.0 };
bool walls { false };
float wallu { -1.f };
loft_end fromend;
loft_end toend;
};
struct segment_data {
// types
enum point {
@@ -132,7 +157,7 @@ public:
RenderLoft( gfx::vertex_array &Output, glm::dvec3 const &Origin, gfx::vertex_array const &ShapePoints, bool const Transition, double fTextureLength, double Texturescale = 1.0, int iSkip = 0, int iEnd = 0, std::pair<float, float> fOffsetX = {0.f, 0.f}, glm::vec3 **p = nullptr, bool bRender = true );
// the profile lofted from distance From to To, moved outwards by Offsets and cut on its outer side to Extents beyond the gauge line, both as (distance, value) knots
bool
RenderLoftSpan( gfx::vertex_array &Output, glm::dvec3 const &Origin, gfx::vertex_array const &ShapePoints, int const Side, float const Halfwidth, double const fTextureLength, double const From, double const To, std::vector<glm::dvec2> const &Offsets, std::vector<glm::dvec2> const &Extents = {}, float const Lift = 0.f, std::vector<glm::dvec2> const &Inner = {}, gfx::userdata_array *Userdata = nullptr, std::vector<glm::dvec2> const &Ramp = {}, double const Rampwidth = 0.0, bool const Walls = false, float const Wallu = -1.f, glm::dvec2 const &Bends = glm::dvec2 { 0.0 }, std::vector<glm::dvec2> const &Fitfrom = {}, std::vector<glm::dvec2> const &Fitto = {} ) const;
RenderLoftSpan( gfx::vertex_array &Output, glm::dvec3 const &Origin, gfx::vertex_array const &ShapePoints, loft_span const &Span ) const;
// point of the path and the unit vector across it towards the right rail profile, at a distance from Point1
void
plan_frame( double const Distance, glm::dvec3 &Point, glm::dvec3 &Across ) const;