Example #1
0
 public Camera(Vector3 position, Quaternion rotation, float aspectRatio, float fov)
 {
     _position = position;
     _rotation = rotation.Normalized();
     AspectRatio = aspectRatio;
     FoV = fov;
 }
Example #2
0
 public Mesh(Vector3[] vertices, Triangle[] triangles, Vector3 position, Quaternion rotation, Shader shader, ISampler normalSampler)
 {
     Vertices = vertices;
     _triangles = triangles;
     Shader = shader;
     Position = position;
     Rotation = rotation;
     _normalSampler = normalSampler;
     Init();
 }
        public static Quaternion LookRotation(Vector3 direction, Vector3 up)
        {
            Vector3 directionNormalized = direction.Normalized();
            // Rotate around up vector
            Vector3 directionProjected = (directionNormalized - up * Vector3.Dot(directionNormalized, up)).Normalized();
            Vector3 forwardProjected = (Vector3.Forward - up * Vector3.Dot(Vector3.Forward, up)).Normalized();
            float rotationAroundUpAngleHalf = (float) Math.Acos((Vector3.Dot(directionProjected, forwardProjected))) / 2;
            var rotationAroundUp = new Quaternion(up * (float) Math.Sin(rotationAroundUpAngleHalf),
                (float) Math.Cos(rotationAroundUpAngleHalf));

            // Rotate around horizontal vector
            Vector3 rotationAxis = Vector3.Cross(directionNormalized, directionProjected);
            double angleHalf = Math.Acos(Vector3.Dot(directionNormalized, directionProjected)) / 2;
            var rotationAroundHorizontal = new Quaternion(rotationAxis * (float) Math.Sin(angleHalf),
                (float) Math.Cos(angleHalf));

            return rotationAroundUp * rotationAroundHorizontal;
        }
Example #4
0
 public Vector3 RotatedBy(Quaternion quaternion)
 {
     Vector3 t = 2 * Cross(quaternion.XYZ, this);
     Vector3 rotated = this + quaternion.W * t + Cross(quaternion.XYZ, t);
     return rotated;
 }