70 lines
1.9 KiB
C++
70 lines
1.9 KiB
C++
#ifndef _GEOMETRY_TRIANGLE_HH_
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#define _GEOMETRY_TRIANGLE_HH_
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#include "all_includes.hh"
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class Triangle {
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private :
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Vertex c[3];
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public :
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Triangle();
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Triangle(Vertex left, Vertex top, Vertex right);
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inline Vertex& operator[] (SommetTriangle x) {
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return c[x];
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}
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inline const Vertex& operator[] (SommetTriangle x) const {
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return c[x];
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}
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inline Triangle operator>> (int rot) const {
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return Triangle(c[LEFT - rot], c[TOP - rot], c[RIGHT - rot]);
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}
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inline Triangle operator<< (int rot) const {
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return Triangle(c[LEFT + rot], c[TOP + rot], c[RIGHT + rot]);
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}
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friend Triangle operator+(const Triangle& t, const Vertex& v);
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float cosAngle() const; // cosinus de l'angle en c[1].
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float angle() const; // angle en c[TOP], en degrés.
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float minAngle() const; // angle minimum du triangle (en LEFT, TOP ou RIGHT).
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float maxAngle() const; // angle maximum du triangle (en LEFT, TOP ou RIGHT).
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SommetTriangle minAngleCorner() const;
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SommetTriangle maxAngleCorner() const;
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float minLength() const;
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float maxLength() const;
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float surface() const;
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Triangle inset(CoteTriangle side, float offset) const;
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Triangle insetLTR(float offset) const;
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Vertex randomPoint(int seed, int n) const;
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Vertex normal() const;
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Vertex normalizedNormal() const;
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Triangle offsetNormal(float offset) const;
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Triangle insetProportionnal(float prop);
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};
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class TriBool {
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private:
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bool c[3];
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public :
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TriBool();
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TriBool(bool leftside, bool rightside, bool base) {
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c[LEFTSIDE] = leftside;
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c[RIGHTSIDE] = rightside;
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c[BASE] = base;
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};
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inline bool& operator[] (CoteTriangle x) {
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return c[x];
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}
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inline const bool& operator[] (CoteTriangle x) const {
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return c[x];
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}
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inline TriBool operator>> (int rot) const {
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return TriBool(c[LEFTSIDE - rot], c[RIGHTSIDE - rot], c[BASE - rot]);
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}
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inline TriBool operator<< (int rot) const {
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return TriBool(c[LEFTSIDE + rot], c[RIGHTSIDE + rot], c[BASE + rot]);
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}
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};
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#endif
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