Интерфейси и nil

Програмиране с Go

Курс във Факултета по Математика и Информатика към СУ

Решение на Пресичания от Мартин Врачев

Обратно към всички решения

Към профила на Мартин Врачев

Резултати

  • 0 точки от тестове
  • 0 бонус точки
  • 0 точки общо
  • 0 успешни тест(а)
  • 20 неуспешни тест(а)

Код

package main
import (
"math"
"github.com/fmi/go-homework/geom"
)
const EPSILON float64 = 0.0000001
type Triangle struct {
A, B, C geom.Vector
}
func NewTriangle(a, b, c geom.Vector) Triangle {
return Triangle{
A: a,
B: b,
C: c,
}
}
func createVectorFromTwoPoints(a, b geom.Vector) (ab geom.Vector) {
ab.X = b.X - a.X
ab.Y = b.Y - a.Y
ab.Z = b.Z - a.Z
return ab
}
func findT(n, p, D geom.Vector, d float64) float64 {
return (d - geom.Dot(n, p)) / geom.Dot(n, D)
}
func findIntersectDot(ray geom.Ray, t float64) geom.Vector {
return geom.Add(ray.Origin, geom.Mul(ray.Direction, t))
}
func floatEquals(a, b float64) bool {
if (a-b) < EPSILON && (b-a) < EPSILON {
return true
}
return false
}
func isDotInTriangle(tr Triangle, normalVector, q geom.Vector) bool {
ba := createVectorFromTwoPoints(tr.B, tr.A)
qa := createVectorFromTwoPoints(q, tr.A)
equationRes := geom.Dot((geom.Cross(ba, qa)), normalVector)
if !floatEquals(0, equationRes) && !(equationRes > 0) {
return false
}
cb := createVectorFromTwoPoints(tr.C, tr.B)
qb := createVectorFromTwoPoints(q, tr.B)
equationRes = geom.Dot((geom.Cross(cb, qb)), normalVector)
if !floatEquals(0, equationRes) && !(equationRes > 0) {
return false
}
ac := createVectorFromTwoPoints(tr.A, tr.C)
qc := createVectorFromTwoPoints(q, tr.C)
equationRes = geom.Dot((geom.Cross(ac, qc)), normalVector)
if !floatEquals(0, equationRes) && !(equationRes > 0) {
return false
}
return true
}
func (tr Triangle) Intersect(ray geom.Ray) bool {
ab := createVectorFromTwoPoints(tr.A, tr.B)
ac := createVectorFromTwoPoints(tr.A, tr.C)
normalVector := geom.Cross(ab, ac)
d := geom.Dot(normalVector, tr.A)
if floatEquals(0, geom.Dot(normalVector, ray.Direction)) {
return false
}
t := findT(normalVector, ray.Origin, ray.Direction, d)
if t < 0 {
return false
}
intersectionPoint := findIntersectDot(ray, t)
return isDotInTriangle(tr, normalVector, intersectionPoint)
}
// ------------------------------------ QUAD ------------------------------------
type Quad struct {
A, B, C, D geom.Vector
}
func NewQuad(a, b, c, d geom.Vector) Quad {
return Quad{
A: a,
B: b,
C: c,
D: d,
}
}
func (q *Quad) Intersect(ray geom.Ray) bool {
trFirst := NewTriangle(q.A, q.B, q.C)
trSecond := NewTriangle(q.A, q.D, q.C)
if trFirst.Intersect(ray) || trSecond.Intersect(ray) {
return true
}
return false
}
// ------------------------------------ SPHERE ------------------------------------
type Sphere struct {
origin geom.Vector
radius float64
}
func NewSphere(origin geom.Vector, r float64) Sphere {
return Sphere{
origin: origin,
radius: r,
}
}
func (s *Sphere) Intersect(ray geom.Ray) bool {
Q := geom.Sub(ray.Origin, s.origin)
a := geom.Dot(ray.Direction, ray.Direction) // should be = 1
b := 2 * geom.Dot(ray.Direction, Q) // 2 * U * Q
c := geom.Dot(Q, Q) - s.radius*s.radius
d := b*b - 4*a*c
// then solutions are complex, so no intersections
if d < 0 {
return false
} else {
t1 := (-b - math.Sqrt(d)) / 2 * a * c
t2 := (-b + math.Sqrt(d)) / 2 * a * c
if t1 < 0 || t2 < 0 {
return false
}
}
return true
}
func main() {
}

Лог от изпълнението

# _/tmp/d20181122-57-1ham54s [_/tmp/d20181122-57-1ham54s.test]
./solution_test.go:77:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:88:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:99:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:110:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:121:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:132:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:143:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:154:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:165:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: too many errors
FAIL	_/tmp/d20181122-57-1ham54s [build failed]
# _/tmp/d20181122-57-1ham54s [_/tmp/d20181122-57-1ham54s.test]
./solution_test.go:77:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:88:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:99:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:110:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:121:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:132:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:143:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:154:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:165:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: too many errors
FAIL	_/tmp/d20181122-57-1ham54s [build failed]
# _/tmp/d20181122-57-1ham54s [_/tmp/d20181122-57-1ham54s.test]
./solution_test.go:77:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:88:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:99:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:110:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:121:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:132:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:143:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:154:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:165:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: too many errors
FAIL	_/tmp/d20181122-57-1ham54s [build failed]
# _/tmp/d20181122-57-1ham54s [_/tmp/d20181122-57-1ham54s.test]
./solution_test.go:77:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:88:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:99:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:110:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:121:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:132:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:143:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:154:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:165:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: too many errors
FAIL	_/tmp/d20181122-57-1ham54s [build failed]
# _/tmp/d20181122-57-1ham54s [_/tmp/d20181122-57-1ham54s.test]
./solution_test.go:77:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:88:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:99:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:110:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:121:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:132:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:143:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:154:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:165:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: too many errors
FAIL	_/tmp/d20181122-57-1ham54s [build failed]
# _/tmp/d20181122-57-1ham54s [_/tmp/d20181122-57-1ham54s.test]
./solution_test.go:77:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:88:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:99:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:110:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:121:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:132:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:143:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:154:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:165:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: too many errors
FAIL	_/tmp/d20181122-57-1ham54s [build failed]
# _/tmp/d20181122-57-1ham54s [_/tmp/d20181122-57-1ham54s.test]
./solution_test.go:77:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:88:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:99:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:110:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:121:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:132:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:143:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:154:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:165:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: too many errors
FAIL	_/tmp/d20181122-57-1ham54s [build failed]
# _/tmp/d20181122-57-1ham54s [_/tmp/d20181122-57-1ham54s.test]
./solution_test.go:77:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:88:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:99:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:110:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:121:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:132:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:143:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:154:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:165:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: too many errors
FAIL	_/tmp/d20181122-57-1ham54s [build failed]
# _/tmp/d20181122-57-1ham54s [_/tmp/d20181122-57-1ham54s.test]
./solution_test.go:77:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:88:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:99:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:110:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:121:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:132:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:143:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:154:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:165:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: too many errors
FAIL	_/tmp/d20181122-57-1ham54s [build failed]
# _/tmp/d20181122-57-1ham54s [_/tmp/d20181122-57-1ham54s.test]
./solution_test.go:77:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:88:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:99:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:110:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:121:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:132:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:143:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:154:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:165:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: too many errors
FAIL	_/tmp/d20181122-57-1ham54s [build failed]
# _/tmp/d20181122-57-1ham54s [_/tmp/d20181122-57-1ham54s.test]
./solution_test.go:77:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:88:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:99:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:110:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:121:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:132:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:143:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:154:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:165:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: too many errors
FAIL	_/tmp/d20181122-57-1ham54s [build failed]
# _/tmp/d20181122-57-1ham54s [_/tmp/d20181122-57-1ham54s.test]
./solution_test.go:77:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:88:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:99:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:110:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:121:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:132:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:143:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:154:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:165:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: too many errors
FAIL	_/tmp/d20181122-57-1ham54s [build failed]
# _/tmp/d20181122-57-1ham54s [_/tmp/d20181122-57-1ham54s.test]
./solution_test.go:77:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:88:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:99:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:110:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:121:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:132:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:143:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:154:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:165:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: too many errors
FAIL	_/tmp/d20181122-57-1ham54s [build failed]
# _/tmp/d20181122-57-1ham54s [_/tmp/d20181122-57-1ham54s.test]
./solution_test.go:77:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:88:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:99:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:110:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:121:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:132:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:143:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:154:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:165:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: too many errors
FAIL	_/tmp/d20181122-57-1ham54s [build failed]
# _/tmp/d20181122-57-1ham54s [_/tmp/d20181122-57-1ham54s.test]
./solution_test.go:77:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:88:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:99:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:110:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:121:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:132:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:143:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:154:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:165:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: too many errors
FAIL	_/tmp/d20181122-57-1ham54s [build failed]
# _/tmp/d20181122-57-1ham54s [_/tmp/d20181122-57-1ham54s.test]
./solution_test.go:77:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:88:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:99:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:110:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:121:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:132:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:143:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:154:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:165:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: too many errors
FAIL	_/tmp/d20181122-57-1ham54s [build failed]
# _/tmp/d20181122-57-1ham54s [_/tmp/d20181122-57-1ham54s.test]
./solution_test.go:77:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:88:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:99:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:110:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:121:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:132:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:143:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:154:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:165:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: too many errors
FAIL	_/tmp/d20181122-57-1ham54s [build failed]
# _/tmp/d20181122-57-1ham54s [_/tmp/d20181122-57-1ham54s.test]
./solution_test.go:77:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:88:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:99:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:110:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:121:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:132:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:143:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:154:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:165:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: too many errors
FAIL	_/tmp/d20181122-57-1ham54s [build failed]
# _/tmp/d20181122-57-1ham54s [_/tmp/d20181122-57-1ham54s.test]
./solution_test.go:77:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:88:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:99:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:110:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:121:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:132:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:143:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:154:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:165:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: too many errors
FAIL	_/tmp/d20181122-57-1ham54s [build failed]
# _/tmp/d20181122-57-1ham54s [_/tmp/d20181122-57-1ham54s.test]
./solution_test.go:77:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:88:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:99:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:110:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:121:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:132:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:143:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:154:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:165:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: cannot use quad (type Quad) as type geom.Intersectable in argument to checkFigure:
	Quad does not implement geom.Intersectable (Intersect method has pointer receiver)
./solution_test.go:176:13: too many errors
FAIL	_/tmp/d20181122-57-1ham54s [build failed]

История (1 версия и 3 коментара)

Мартин обнови решението на 21.11.2018 11:44 (преди 9 месеца)

+package main
+
+import (
+ "math"
+
+ "github.com/fmi/go-homework/geom"
+)
+
+const EPSILON float64 = 0.0000001
+
+type Triangle struct {
+ A, B, C geom.Vector
+}
+
+func NewTriangle(a, b, c geom.Vector) Triangle {
+ return Triangle{
+ A: a,
+ B: b,
+ C: c,
+ }
+}
+
+func createVectorFromTwoPoints(a, b geom.Vector) (ab geom.Vector) {
+ ab.X = b.X - a.X
+ ab.Y = b.Y - a.Y
+ ab.Z = b.Z - a.Z
+ return ab
+}
+
+func findT(n, p, D geom.Vector, d float64) float64 {
+ return (d - geom.Dot(n, p)) / geom.Dot(n, D)
+}
+
+func findIntersectDot(ray geom.Ray, t float64) geom.Vector {
+ return geom.Add(ray.Origin, geom.Mul(ray.Direction, t))
+}
+
+func floatEquals(a, b float64) bool {
+ if (a-b) < EPSILON && (b-a) < EPSILON {
+ return true
+ }
+ return false
+}
+
+func isDotInTriangle(tr Triangle, normalVector, q geom.Vector) bool {
+
+ ba := createVectorFromTwoPoints(tr.B, tr.A)
+ qa := createVectorFromTwoPoints(q, tr.A)
+
+ equationRes := geom.Dot((geom.Cross(ba, qa)), normalVector)
+ if !floatEquals(0, equationRes) && !(equationRes > 0) {
+ return false
+ }
+
+ cb := createVectorFromTwoPoints(tr.C, tr.B)
+ qb := createVectorFromTwoPoints(q, tr.B)
+ equationRes = geom.Dot((geom.Cross(cb, qb)), normalVector)
+
+ if !floatEquals(0, equationRes) && !(equationRes > 0) {
+ return false
+ }
+
+ ac := createVectorFromTwoPoints(tr.A, tr.C)
+ qc := createVectorFromTwoPoints(q, tr.C)
+
+ equationRes = geom.Dot((geom.Cross(ac, qc)), normalVector)
+ if !floatEquals(0, equationRes) && !(equationRes > 0) {
+ return false
+ }
+
+ return true
+}
+
+func (tr Triangle) Intersect(ray geom.Ray) bool {
+
+ ab := createVectorFromTwoPoints(tr.A, tr.B)
+ ac := createVectorFromTwoPoints(tr.A, tr.C)
+ normalVector := geom.Cross(ab, ac)
+
+ d := geom.Dot(normalVector, tr.A)
+
+ if floatEquals(0, geom.Dot(normalVector, ray.Direction)) {
+ return false
+ }
+
+ t := findT(normalVector, ray.Origin, ray.Direction, d)
+
+ if t < 0 {
+ return false
+ }
+ intersectionPoint := findIntersectDot(ray, t)
+
+ return isDotInTriangle(tr, normalVector, intersectionPoint)
+}
+
+// ------------------------------------ QUAD ------------------------------------
+
+type Quad struct {
+ A, B, C, D geom.Vector
+}
+
+func NewQuad(a, b, c, d geom.Vector) Quad {
+ return Quad{
+ A: a,
+ B: b,
+ C: c,
+ D: d,
+ }
+}
+
+func (q *Quad) Intersect(ray geom.Ray) bool {
+
+ trFirst := NewTriangle(q.A, q.B, q.C)
+ trSecond := NewTriangle(q.A, q.D, q.C)
+
+ if trFirst.Intersect(ray) || trSecond.Intersect(ray) {
+ return true
+ }
+
+ return false
+}
+
+// ------------------------------------ SPHERE ------------------------------------
+
+type Sphere struct {
+ origin geom.Vector
+ radius float64
+}
+
+func NewSphere(origin geom.Vector, r float64) Sphere {
+ return Sphere{
+ origin: origin,
+ radius: r,
+ }
+}
+
+func (s *Sphere) Intersect(ray geom.Ray) bool {
+
+ Q := geom.Sub(ray.Origin, s.origin)
+ a := geom.Dot(ray.Direction, ray.Direction) // should be = 1
+ b := 2 * geom.Dot(ray.Direction, Q) // 2 * U * Q
+ c := geom.Dot(Q, Q) - s.radius*s.radius
+ d := b*b - 4*a*c
+
+ // then solutions are complex, so no intersections
+ if d < 0 {
+ return false
+ } else {
+ t1 := (-b - math.Sqrt(d)) / 2 * a * c
+ t2 := (-b + math.Sqrt(d)) / 2 * a * c
+
+ if t1 < 0 || t2 < 0 {
+ return false
+ }
+ }
+ return true
+}
+
+func main() {
+
+}

Решението ти изглежда прилично. Лошото е, че не си проверил дали фигурите ти имплементират интерфейса. Ако беше предал по - рано щях да съм го видял и да те предупредя.

По кое личи, че не съм имплементирал интерфейса?? Имам функциите за Intersect, компилира се. Когато създавам фигура от тип Interface и я assign-вам в тестове на триъгълник работи, значи триъгълника изпълнява interface - a...

Видях, че са ти отговорили вече във форумите. Но общо взето нещата се свеждат до pointer receiver и value receiver на методи на структури. В твоя случай четириъгълника и сферата имат pointer receiver заIntersect метод, а ти всъщност връщаш values (вместо pointers) от твоите New функции. Това е много добре обяснени в Pointers vs Values главата на Effective Go. Ще можеш да видиш кое кога е полезно и защо съществува тази разлика.

Тъй като очаквах такива случай в примерните тестове бях сложил един, който проверява точно това. Дали и трите фигури имплементират интерфейса. За нещастие явно не си го пускал.