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Extend medial axis endpoints to fill the entire length. Includes fix for a minor memory leak caused by usage of old signature for Line::point_at()

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Alessandro Ranellucci 2014-03-15 16:53:20 +01:00
parent 52de292a48
commit ed8a2f7330
8 changed files with 54 additions and 10 deletions
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17
xs/src/Line.cpp
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@ -62,15 +62,22 @@ Line::midpoint() const
return new Point ((this->a.x + this->b.x) / 2.0, (this->a.y + this->b.y) / 2.0);
}
Point*
Line::point_at(double distance) const
void
Line::point_at(double distance, Point* point) const
{
double len = this->length();
Point* p = new Point(this->a);
*point = this->a;
if (this->a.x != this->b.x)
p->x = this->a.x + (this->b.x - this->a.x) * distance / len;
point->x = this->a.x + (this->b.x - this->a.x) * distance / len;
if (this->a.y != this->b.y)
p->y = this->a.y + (this->b.y - this->a.y) * distance / len;
point->y = this->a.y + (this->b.y - this->a.y) * distance / len;
}
Point
Line::point_at(double distance) const
{
Point p;
this->point_at(distance, &p);
return p;
}