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Reformated collisions.cc

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This commit is contained in:
Karma Riuk 2023-05-19 16:29:05 +02:00
parent a424fec9a9
commit ce0cf102ba
1 changed files with 10 additions and 9 deletions
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19
collisions.cc
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@ -37,10 +37,10 @@ static std::vector<vertex> vertices_of(polygon& p) {
// Given three collinear points p, q, r, the function checks if // Given three collinear points p, q, r, the function checks if
// point q lies on line segment 'pr' // point q lies on line segment 'pr'
static bool on_segment(vec2d& q, segment& pr) { static bool on_segment(vec2d& q, segment& pr) {
return q.x <= std::max(pr.first.x, pr.second.x) && return q.x <= std::max(pr.first.x, pr.second.x)
q.x >= std::min(pr.first.x, pr.second.x) && && q.x >= std::min(pr.first.x, pr.second.x)
q.y <= std::max(pr.first.y, pr.second.y) && && q.y <= std::max(pr.first.y, pr.second.y)
q.y >= std::min(pr.first.y, pr.second.y); && q.y >= std::min(pr.first.y, pr.second.y);
} }
static Orientation orientation(vec2d& p, vec2d& q, vec2d& r) { static Orientation orientation(vec2d& p, vec2d& q, vec2d& r) {
@ -87,7 +87,8 @@ static std::vector<segment> edges_of(polygon& p) {
ret.reserve(p.points.size()); ret.reserve(p.points.size());
for (uint i = 0; i < p.points.size(); ++i) for (uint i = 0; i < p.points.size(); ++i)
ret.push_back( ret.push_back(
{p.global_points[i], p.global_points[(i + 1) % p.points.size()]}); {p.global_points[i], p.global_points[(i + 1) % p.points.size()]}
);
return ret; return ret;
} }
@ -157,8 +158,8 @@ static collision parallel(segment edge_p, segment edge_q, vec2d d) {
} }
static bool are_vecs_parallel(vec2d s1, vec2d s2) { static bool are_vecs_parallel(vec2d s1, vec2d s2) {
return std::abs(vec2d::dot(vec2d::normalize(s1), vec2d::normalize(s2))) > return std::abs(vec2d::dot(vec2d::normalize(s1), vec2d::normalize(s2)))
.99; > .99;
} }
static double distance_between_parallel_segments(segment s1, segment s2) { static double distance_between_parallel_segments(segment s1, segment s2) {
@ -172,8 +173,8 @@ static double distance_between_parallel_segments(segment s1, segment s2) {
static bool are_edges_colinear(segment& e1, segment& e2) { static bool are_edges_colinear(segment& e1, segment& e2) {
vec2d e1_vec = e1.second - e1.first; vec2d e1_vec = e1.second - e1.first;
vec2d e2_vec = e2.second - e2.first; vec2d e2_vec = e2.second - e2.first;
return are_vecs_parallel(e1_vec, e2_vec) && return are_vecs_parallel(e1_vec, e2_vec)
distance_between_parallel_segments(e1, e2) < SMALLEST_DIST; && distance_between_parallel_segments(e1, e2) < SMALLEST_DIST;
} }
static collision vertex_edge_collision(polygon& p, polygon& q) { static collision vertex_edge_collision(polygon& p, polygon& q) {