コード例 #1
0
ファイル: MazeWall.cs プロジェクト: armorproof/COMP7051Assn3
            public Wall( Maze maze, Line2 line, float height, Texture2D texture )
            {
                Maze = maze;
                Line = line;
                Height = height;
                Texture = texture;

                SetUpVertices( line, height );
            }
コード例 #2
0
ファイル: MazeWall.cs プロジェクト: armorproof/COMP7051Assn3
            private void SetUpVertices( Line2 line, float height )
            {
                Vector3[] vertex = new Vector3[ 6 ];
                // top left
                vertex[ 0 ] = new Vector3( line.X0, height, line.Y0 );
                // bottom left
                vertex[ 1 ] = new Vector3( line.X0, 0, line.Y0 );
                // top right
                vertex[ 2 ] = new Vector3( line.X1, height, line.Y1 );
                // bottom left
                vertex[ 3 ] = new Vector3( line.X0, 0, line.Y0 );
                // bottom right
                vertex[ 4 ] = new Vector3( line.X1, 0, line.Y1 );
                // top right
                vertex[ 5 ] = new Vector3( line.X1, height, line.Y1 );

                Vector2 texTopLeft = Vector2.Zero;
                Vector2 texTopRight = Vector2.UnitX;
                Vector2 texBottomLeft = Vector2.UnitY;
                Vector2 texBottomRight = Vector2.One;

                Vector3 normal = Vector3.Cross(
                    new Vector3( line.Direction.X, 0, line.Direction.Y ),
                    Vector3.UnitY );

                Color color = Color.White;

                mVertexData[ 0 ] = new VertexPositionNormalColorTexture(
                    vertex[ 0 ], normal, color, texTopLeft );

                mVertexData[ 1 ] = new VertexPositionNormalColorTexture(
                    vertex[ 1 ], normal, color, texBottomLeft );

                mVertexData[ 2 ] = new VertexPositionNormalColorTexture(
                    vertex[ 2 ], normal, color, texTopRight );

                mVertexData[ 3 ] = new VertexPositionNormalColorTexture(
                    vertex[ 3 ], normal, color, texBottomLeft );

                mVertexData[ 4 ] = new VertexPositionNormalColorTexture(
                    vertex[ 4 ], normal, color, texBottomRight );

                mVertexData[ 5 ] = new VertexPositionNormalColorTexture(
                    vertex[ 5 ], normal, color, texTopRight );
            }
コード例 #3
0
ファイル: Line.cs プロジェクト: armorproof/COMP7051Assn3
 public void Reverse( out Line2 outLine )
 {
     outLine.P0 = P1;
     outLine.P1 = P0;
 }
コード例 #4
0
ファイル: Line.cs プロジェクト: armorproof/COMP7051Assn3
        public Vector2? Intersection( Line2 l )
        {
            var p = P0;
            var r = P1 - P0;
            var q = l.P0;
            var s = l.P1 - l.P0;

            var qp_s = (float) Math.Round( Utils.Cross( q - p, s ), 3 );
            var qp_r = (float) Math.Round( Utils.Cross( q - p, r ), 3 );
            var r_s = (float) Math.Round(  Utils.Cross( r, s ), 3 );

            float t = qp_s / r_s;
            float u = qp_r / r_s;

            if ( r_s == 0 )
            {
                if ( qp_r == 0 )
                {
                    var t0 = Vector2.Dot( q - p, r ) / Vector2.Dot( r, r );
                    var t1 = t0 + Vector2.Dot( s, r ) / Vector2.Dot( r, r );

                    if ( Vector2.Dot( s, r ) >= 0 )
                    {
                        if ( t0 <= 1 && t1 >= 0 )
                            return q;
                    }
                    else if ( t1 <= 1 && t0 >= 0 )
                    {
                        return q;
                    }
                }
                else
                {
                    return null;
                }
            }
            else if ( (0 <= t && t <= 1) && (0 <= u && u <= 1) )
            {
                return p + t*r;
            }

            return null;
        }