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#include "network.h"
#include "routeWalker.h"
#include <array>
#include <cache.h>
#include <filesystem>
#include <game/network/link.h>
#include <gfx/models/texture.h>
#include <glm/gtx/intersect.hpp>
#include <initializer_list>
#include <ray.hpp>
#include <stdexcept>
#include <utility>
Network::Network(const std::string & tn) : texture {Texture::cachedTexture.get(tn)} { }
Node::Ptr
Network::nodeAt(glm::vec3 pos)
{
return newNodeAt(pos).first;
}
Network::NodeInsertion
Network::newNodeAt(glm::vec3 pos)
{
if (const auto [n, i] = candidateNodeAt(pos); i == NodeIs::NotInNetwork) {
return {*nodes.insert(std::move(n)).first, i};
}
else {
return {n, NodeIs::InNetwork};
}
}
Node::Ptr
Network::findNodeAt(glm::vec3 pos) const
{
if (const auto n = nodes.find(pos); n != nodes.end()) {
return *n;
}
return {};
}
Network::NodeInsertion
Network::candidateNodeAt(glm::vec3 pos) const
{
if (const auto n = nodes.find(pos); n != nodes.end()) {
return {*n, NodeIs::InNetwork};
}
return {std::make_shared<Node>(pos), NodeIs::NotInNetwork};
}
Node::Ptr
Network::intersectRayNodes(const Ray & ray) const
{
// Click within 2m of a node
if (const auto node = std::find_if(nodes.begin(), nodes.end(),
[&ray](const Node::Ptr & node) {
glm::vec3 ipos, inorm;
return glm::intersectRaySphere(ray.start, ray.direction, node->pos, 2.F, ipos, inorm);
});
node != nodes.end()) {
return *node;
}
return {};
}
void
Network::joinLinks(const Link::Ptr & l, const Link::Ptr & ol)
{
if (l != ol) {
for (const auto oe : {0U, 1U}) {
for (const auto te : {0U, 1U}) {
if (l->ends[te].node == ol->ends[oe].node) {
l->ends[te].nexts.emplace_back(ol, oe);
ol->ends[oe].nexts.emplace_back(l, te);
}
}
}
}
}
Link::Nexts
Network::routeFromTo(const Link::End & start, glm::vec3 dest) const
{
auto destNode {findNodeAt(dest)};
if (!destNode) {
throw std::out_of_range("Node does not exist in network");
}
return routeFromTo(start, destNode);
}
Link::Nexts
Network::routeFromTo(const Link::End & end, const Node::Ptr & dest) const
{
return RouteWalker().findRouteTo(end, dest);
}
GenCurveDef
Network::genCurveDef(const glm::vec3 & start, const glm::vec3 & end, float startDir)
{
const auto diff {end - start};
const auto vy {vector_yaw(diff)};
const auto dir = pi + startDir;
const auto flatStart {!start}, flatEnd {!end};
const auto n2ed {(vy * 2) - dir - pi};
const auto centre {find_arc_centre(flatStart, dir, flatEnd, n2ed)};
if (centre.second) { // right hand arc
return {end, start, centre.first};
}
return {start, end, centre.first};
}
std::pair<GenCurveDef, GenCurveDef>
Network::genCurveDef(const glm::vec3 & start, const glm::vec3 & end, float startDir, float endDir)
{
startDir += pi;
endDir += pi;
const glm::vec2 flatStart {!start}, flatEnd {!end};
auto midheight = [&](auto mid) {
const auto sm = glm::distance(flatStart, mid), em = glm::distance(flatEnd, mid);
return start.z + ((end.z - start.z) * (sm / (sm + em)));
};
if (const auto radii = find_arcs_radius(flatStart, startDir, flatEnd, endDir); radii.first < radii.second) {
const auto radius {radii.first};
const auto c1 = flatStart + sincosf(startDir + half_pi) * radius;
const auto c2 = flatEnd + sincosf(endDir + half_pi) * radius;
const auto mid = (c1 + c2) / 2.F;
const auto midh = mid ^ midheight(mid);
return {{start, midh, c1}, {end, midh, c2}};
}
else {
const auto radius {radii.second};
const auto c1 = flatStart + sincosf(startDir - half_pi) * radius;
const auto c2 = flatEnd + sincosf(endDir - half_pi) * radius;
const auto mid = (c1 + c2) / 2.F;
const auto midh = mid ^ midheight(mid);
return {{midh, start, c1}, {midh, end, c2}};
}
}
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