Example #1
0
 /// <summary>
 /// Constructor.
 /// </summary>
 /// <param name="v">4D vector to set up plane.</param>
 public FPlane(FVector4 v)
 {
     X = v.X;
     Y = v.Y;
     Z = v.Z;
     W = v.W;
 }
Example #2
0
 /// <summary>
 /// Constructor
 /// </summary>
 /// <param name="vector">float vector converted to int</param>
 public FIntVector4(FVector4 vector)
 {
     X = FMath.TruncToInt(vector.X);
     Y = FMath.TruncToInt(vector.Y);
     Z = FMath.TruncToInt(vector.Z);
     W = FMath.TruncToInt(vector.W);
 }
Example #3
0
 /// <summary>
 /// Performs a linear interpolation between two values, Alpha ranges from 0-1
 /// </summary>
 public static FVector4 LerpStable(FVector4 a, FVector4 b, float alpha)
 {
     return(new FVector4(
                FMath.LerpStable(a.X, b.X, alpha),
                FMath.LerpStable(a.Y, b.Y, alpha),
                FMath.LerpStable(a.Z, b.Z, alpha),
                FMath.LerpStable(a.W, b.W, alpha)));
 }
Example #4
0
        /// <summary>
        /// Transforms and projects a world bounding box to screen space
        /// </summary>
        /// <param name="projM">The projection matrix.</param>
        /// <returns>The transformed box.</returns>
        /// <see cref="TransformBy(FMatrix)"/>
        public FBox TransformProjectBy(FMatrix projM)
        {
            FVector[] vertices = new FVector[8]
            {
                Min,
                new FVector(Min.X, Min.Y, Max.Z),
                new FVector(Min.X, Max.Y, Min.Z),
                new FVector(Max.X, Min.Y, Min.Z),
                new FVector(Max.X, Max.Y, Min.Z),
                new FVector(Max.X, Min.Y, Max.Z),
                new FVector(Min.X, Max.Y, Max.Z),
                Max
            };

            FBox newBox = default(FBox);

            for (int vertexIndex = 0; vertexIndex < vertices.Length; vertexIndex++)
            {
                FVector4 projectedVertex = projM.TransformPosition(vertices[vertexIndex]);
                newBox += ((FVector)projectedVertex) / projectedVertex.W;
            }

            return(newBox);
        }
Example #5
0
        /// <summary>
        /// Gets a bounding volume transformed by an inverted FTransform object.
        /// </summary>
        /// <param name="m">The transformation object to perform the inversely transform this box with.</param>
        /// <returns>The transformed box.</returns>
        public FBox InverseTransformBy(FTransform m)
        {
            FVector[] vertices = new FVector[8]
            {
                Min,
                new FVector(Min.X, Min.Y, Max.Z),
                new FVector(Min.X, Max.Y, Min.Z),
                new FVector(Max.X, Min.Y, Min.Z),
                new FVector(Max.X, Max.Y, Min.Z),
                new FVector(Max.X, Min.Y, Max.Z),
                new FVector(Min.X, Max.Y, Max.Z),
                Max
            };

            FBox newBox = default(FBox);

            for (int vertexIndex = 0; vertexIndex < vertices.Length; vertexIndex++)
            {
                FVector4 projectedVertex = m.InverseTransformPosition(vertices[vertexIndex]);
                newBox += (FVector)projectedVertex;
            }

            return(newBox);
        }