triangle.cpp

小型的3D游戏引擎

#include "triangle.h"

// TODO: Store points and normal + cached public ones

GcTriangle::GcTriangle()
{
}

GcTriangle::GcTriangle( triType tA, triType tB, triType tC ) : a(tA), b(tB), c(tC)
{
}

GcVector3 GcTriangle::Normal() const
{
	// Get 2 vectors from the triangle
	GcVector3 Vector1 = c - a;
	GcVector3 Vector2 = b - a;

	// Use the cross product of our 2 vectors to calculate the normal
	GcVector3 Normal = Vector1.CrossProduct(Vector2);

	// Normalize the normal
	Normal.Normalize();

	return Normal;
}