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use precision scale constepr auto for yaml cpp interop #2

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use precision scale constepr auto for yaml cpp interop #2

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9 changes: 4 additions & 5 deletions src/cppvisgraph/visible_vertices.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -39,13 +39,12 @@
#define CW -1
#define DOUBLE_MAX std::numeric_limits<double>::max()
#define DOUBLE_MIN std::numeric_limits<double>::min()
#define COLIN_TOLERANCE 10
#define T pow(10, COLIN_TOLERANCE)
#define T2 pow(10.0, COLIN_TOLERANCE)

namespace cppvisgraph
{

constexpr double PRECISION_SCALE = 1e10;

class PolygonUtils
{
public:
Expand Down Expand Up @@ -345,7 +344,7 @@ class PolygonUtils
double b = pow(point_c.x() - point_a.x(), 2) + pow(point_c.y() - point_a.y(), 2);
double c = pow(point_b.x() - point_a.x(), 2) + pow(point_b.y() - point_a.y(), 2);
double cos_value = (a + c - b) / (2 * sqrt(a) * sqrt(c));
return acos(round(cos_value*T)/T2);
return acos(round(cos_value*PRECISION_SCALE)/PRECISION_SCALE);
}

/**
Expand Down Expand Up @@ -408,7 +407,7 @@ class PolygonUtils
static int ccw(const Point& A, const Point& B, const Point& C)
{
double _area = (B.x() - A.x()) * (C.y() - A.y()) - (B.y() - A.y()) * (C.x() - A.x());
double area = round(_area*T)/T2;
double area = round(_area*PRECISION_SCALE)/PRECISION_SCALE;
if (area > 0.0)
return CCW;
if (area < 0.0)
Expand Down