aparler/RosettaCodeData
1
0
Fork 0
Code Issues 12 Pull requests 3 Projects Releases Packages Wiki Activity Actions

Just another update

Browse source
This commit is contained in:
Ingy döt Net 2015-02-20 00:35:01 -05:00
parent a25938f123
commit 00a190b0a6
6591 changed files with 94363 additions and 23227 deletions
Download patch file Download diff file Expand all files Collapse all files

10
Task/Ray-casting-algorithm/C/ray-casting-algorithm.c
View file

@ -71,12 +71,12 @@ double dist(vec x, vec y0, vec y1, double tol)
int inside(vec v, polygon p, double tol)
{
/* should assert p->n > 1 */
int i, k, crosses;
int i, k, crosses, intersectResult;
vec *pv;
double min_x, max_x, min_y, max_y;
for (i = 0; i < p->n; i++) {
k = i + 1 % p->n;
k = (i + 1) % p->n;
min_x = dist(v, p->v[i], p->v[k], tol);
if (min_x < tol) return 0;
}
@ -107,13 +107,13 @@ int inside(vec v, polygon p, double tol)
for (i = 0; i < p->n; i++) {
k = (i + 1) % p->n;
k = intersect(v, e, p->v[i], p->v[k], tol, 0);
intersectResult = intersect(v, e, p->v[i], p->v[k], tol, 0);
/* picked a bad point, ray got too close to vertex.
re-pick */
if (!k) break;
if (!intersectResult) break;
if (k == 1) crosses++;
if (intersectResult == 1) crosses++;
}
if (i == p->n) break;
}

8
Task/Ray-casting-algorithm/D/ray-casting-algorithm.d
View file

@ -7,8 +7,9 @@ immutable struct Figure {
Edge[] edges;
}
bool contains(in Figure poly, in Point p) pure nothrow {
static bool raySegI(in Point p, in Edge edge) pure nothrow {
bool contains(in Figure poly, in Point p) pure nothrow @safe @nogc {
static bool raySegI(in Point p, in Edge edge)
pure nothrow @safe @nogc {
enum double epsilon = 0.00001;
with (edge) {
if (a.y > b.y)
@ -31,7 +32,7 @@ bool contains(in Figure poly, in Point p) pure nothrow {
}
}
return poly.edges.count!(e => raySegI(p, e))() % 2;
return poly.edges.count!(e => raySegI(p, e)) % 2;
}
void main() {
@ -54,6 +55,7 @@ void main() {
{{10.0, 5.0}, { 7.0, 10.0}}, {{ 7.0, 10.0}, { 3.0, 10.0}},
{{ 3.0, 10.0}, { 0.0, 5.0}}, {{ 0.0, 5.0}, { 3.0, 0.0}}]}
];
immutable Point[] testPoints = [{ 5, 5}, {5, 8}, {-10, 5}, {0, 5},
{10, 5}, {8, 5}, { 10, 10}];