Open source Star Ruler 2 source code!

source/util/include/plane.h

@@ -0,0 +1,34 @@
+#pragma once
+#include "vec3.h"
+
+template<class T>
+struct plane {
+	vec3<T> dir;
+	T dist;
+
+	plane() : dist(0) {}
+
+	plane(const vec3<T>& direction, T distance) : dir(direction), dist(distance) {
+	}
+
+	plane(const vec3<T>& point, const vec3<T>& direction) : dir(direction), dist((T)point.dot(direction)) {
+	}
+
+	//Creates a plane from a triangle specified in clockwise order (looking at the plane)
+	plane(const vec3<T>& vertA, const vec3<T>& vertB, const vec3<T>& vertC) {
+		vec3<T> legOne = vertA - vertB, legTwo = vertC - vertB;
+
+		dir = legOne.cross(legTwo).normalized();
+		dist = (T)dir.dot(vertA);
+	}
+
+	double distanceFromPlane(const vec3<T>& point) const {
+		return dir.dot(point) - dist;
+	}
+
+	bool pointInFront(const vec3<T>& point) const {
+		return distanceFromPlane(point) >= 0.0;
+	}
+};
+
+typedef plane<double> planed;