Ejemplo n.º 1
0
        public void CreateCylinderMesh(int index)//创建圆柱面网格
        {
            //取出对应元素的索引信息
            ArrayList StepIdOfBound = Form1.MainStorage.LookForChildByIndex(index);

            int       StepIdOfLoop1        = Form1.MainStorage.LookForFirstChild((int)StepIdOfBound[0]);
            int       StepIdOfOriented1    = Form1.MainStorage.LookForFirstChild(StepIdOfLoop1);
            int       StepIdOfCurve1       = Form1.MainStorage.LookForFirstChild(StepIdOfOriented1);
            int       StepIdOfCircle1      = Form1.MainStorage.LookForLastChild(StepIdOfCurve1);
            int       IndexOfCircle1       = Form1.MainStorage.LookForNode(StepIdOfCircle1);
            int       StepIdOfCircleAXIS1  = Form1.MainStorage.LookForFirstChild(StepIdOfCircle1);
            int       StepIdOfCirclePoint1 = Form1.MainStorage.LookForFirstChild(StepIdOfCircleAXIS1);//读出圆心1
            TableItem temp1    = (TableItem)Form1.MainStorage.TableNode[Form1.MainStorage.LookForNode(StepIdOfCirclePoint1)];
            float     Z1_coord = (float)((CARTESIAN_POINT)temp1.node).z_coord;

            int       StepIdOfLoop2        = Form1.MainStorage.LookForFirstChild((int)StepIdOfBound[1]);
            int       StepIdOfOriented2    = Form1.MainStorage.LookForFirstChild(StepIdOfLoop2);
            int       StepIdOfCurve2       = Form1.MainStorage.LookForFirstChild(StepIdOfOriented2);
            int       StepIdOfCircle2      = Form1.MainStorage.LookForLastChild(StepIdOfCurve2);
            int       IndexOfCircle2       = Form1.MainStorage.LookForNode(StepIdOfCircle2);
            int       StepIdOfCircleAXIS2  = Form1.MainStorage.LookForFirstChild(StepIdOfCircle2);
            int       StepIdOfCirclePoint2 = Form1.MainStorage.LookForFirstChild(StepIdOfCircleAXIS2);//读出圆心2
            TableItem temp2    = (TableItem)Form1.MainStorage.TableNode[Form1.MainStorage.LookForNode(StepIdOfCirclePoint2)];
            float     Z2_coord = (float)((CARTESIAN_POINT)temp2.node).z_coord;

            float               height                    = (float)Math.Abs(Z1_coord - Z2_coord);//求出圆柱的高度
            int                 StepIdOfAxis3             = Form1.MainStorage.LookForFirstChild((int)StepIdOfBound[2]);
            ArrayList           all_child                 = Form1.MainStorage.LookForChild(StepIdOfAxis3);
            int                 StepIdOfCircleCenter      = (int)all_child[0]; //找到底面中心索引
            int                 StepIdOfCylinderDirection = (int)all_child[1]; //找到方向索引
            TableItem           Cylinder                  = (TableItem)Form1.MainStorage.TableNode[Form1.MainStorage.LookForNode((int)StepIdOfBound[2])];
            CYLINDRICAL_SURFACE Cylinder_obj              = (CYLINDRICAL_SURFACE)Cylinder.node;
            float               radius                    = (float)Cylinder_obj.radius;
            //读出底面的
            //从STEP文件编号中中实例化出信息
            TableItem       TEMP_CYL        = (TableItem)(Form1.MainStorage.TableNode[Form1.MainStorage.LookForNode(StepIdOfCircleCenter)]);
            CARTESIAN_POINT Cylinder_center = (CARTESIAN_POINT)TEMP_CYL.node;
            TableItem       TEMP_CYL_DIR    = (TableItem)(Form1.MainStorage.TableNode[Form1.MainStorage.LookForNode(StepIdOfCylinderDirection)]);
            DIRECTION       Cylinder_dir    = (DIRECTION)TEMP_CYL_DIR.node;

            STLDirection dir_temp;
            STLDirection dir_temp2;
            STLPoint     point1;
            STLPoint     point2;
            STLPoint     point3;
            STLTriangle  temp_tri1;
            STLPoint     point4;
            STLTriangle  temp_tri2;

            //条件判断,如果符合一定的特殊情况,那么就开始执行三角剖分
            if ((Cylinder_dir.x_dir == 0) && (Cylinder_dir.y_dir == 0) && (Cylinder_dir.z_dir > 0))
            {
                for (int i = 0; i < CircleDivision; ++i)
                {
                    //建立方向
                    dir_temp       = new STLDirection();
                    dir_temp.x_dir = (float)Cylinder_center.x_coord + radius * (float)Math.Cos(0.5 * (2 * Math.PI * (i / (float)CircleDivision) + 2 * Math.PI * ((i + 1) / (float)CircleDivision)));
                    dir_temp.y_dir = (float)Cylinder_center.y_coord + radius * (float)Math.Sin(0.5 * (2 * Math.PI * (i / (float)CircleDivision) + 2 * Math.PI * ((i + 1) / (float)CircleDivision)));
                    dir_temp.z_dir = (float)Cylinder_center.z_coord;

                    //以下部分建立第一个三角形
                    //建立第一个点
                    point1   = new STLPoint();
                    point1.x = (float)Cylinder_center.x_coord + radius * (float)Math.Cos(2 * Math.PI * (i / (float)CircleDivision));
                    point1.y = (float)Cylinder_center.y_coord + radius * (float)Math.Sin(2 * Math.PI * (i / (float)CircleDivision));
                    point1.z = (float)Cylinder_center.z_coord;
                    //建立第二个点
                    point2   = new STLPoint();
                    point2.x = (float)Cylinder_center.x_coord + radius * (float)Math.Cos(2 * Math.PI * ((i + 1) / (float)CircleDivision));
                    point2.y = (float)Cylinder_center.y_coord + radius * (float)Math.Sin(2 * Math.PI * ((i + 1) / (float)CircleDivision));
                    point2.z = (float)Cylinder_center.z_coord;
                    //建立第三个点
                    point3   = new STLPoint();
                    point3.x = (float)Cylinder_center.x_coord + radius * (float)Math.Cos(2 * Math.PI * (i / (float)CircleDivision));
                    point3.y = (float)Cylinder_center.y_coord + radius * (float)Math.Sin(2 * Math.PI * (i / (float)CircleDivision));
                    point3.z = (float)Cylinder_center.z_coord + height;

                    //以下部分建立第二个三角形
                    //前面有两个点可以共用,因此只用建立起一个点
                    point4   = new STLPoint();
                    point4.x = (float)Cylinder_center.x_coord + radius * (float)Math.Cos(2 * Math.PI * ((i + 1) / (float)CircleDivision));
                    point4.y = (float)Cylinder_center.y_coord + radius * (float)Math.Sin(2 * Math.PI * ((i + 1) / (float)CircleDivision));
                    point4.z = (float)Cylinder_center.z_coord + height;

                    //将点和方向插入到三角形结构体之中

                    temp_tri1         = new STLTriangle();
                    temp_tri1.Dir     = dir_temp;
                    temp_tri1.Vertex1 = point1;
                    temp_tri1.Vertex2 = point2;
                    temp_tri1.Vertex3 = point3;
                    STL_menber.Add(temp_tri1);


                    temp_tri2         = new STLTriangle();
                    temp_tri2.Dir     = dir_temp;
                    temp_tri2.Vertex1 = point3;
                    temp_tri2.Vertex2 = point4;
                    temp_tri2.Vertex3 = point2;
                    STL_menber.Add(temp_tri2);
                }
            }

            if ((Cylinder_dir.x_dir == 0) && (Cylinder_dir.y_dir > 0) && (Cylinder_dir.z_dir == 0))
            //条件判断,如果符合一定的特殊情况,那么就开始执行三角剖分
            {
                //
            }
            if ((Cylinder_dir.x_dir > 0) && (Cylinder_dir.y_dir == 0) && (Cylinder_dir.z_dir == 0))
            {
                //
            }
        }
Ejemplo n.º 2
0
        public void CreatePlaneMesh(int index)//创建平面网格
        {
            //取出对应的STEP元素的索引
            int       StepIdOfBound            = Form1.MainStorage.LookForFirstChildByIndex(index);
            int       StepIdOfLoop             = Form1.MainStorage.LookForFirstChild(StepIdOfBound);
            int       StepIdOfOriented         = Form1.MainStorage.LookForFirstChild(StepIdOfLoop);
            int       StepIdOfCurve            = Form1.MainStorage.LookForFirstChild(StepIdOfOriented);
            int       StepIdOfCircle           = Form1.MainStorage.LookForLastChild(StepIdOfCurve);
            int       IndexOfCircle            = Form1.MainStorage.LookForNode(StepIdOfCircle);
            TableItem temp                     = (TableItem)(Form1.MainStorage.TableNode[IndexOfCircle]);
            float     radius                   = (float)((CIRCLE)(temp.node)).radius;                     //读出圆的半径
            int       StepIdOfCircleAXIS       = Form1.MainStorage.LookForFirstChild(StepIdOfCircle);
            int       StepIdOfCirclePoint      = Form1.MainStorage.LookForFirstChild(StepIdOfCircleAXIS); //读出圆心
            int       StepIdOfCircleDirection2 = Form1.MainStorage.LookForLastChild(StepIdOfCircleAXIS);  //读出平面的方向2
            ArrayList child_temp               = Form1.MainStorage.LookForChild(StepIdOfCircleAXIS);
            int       StepIdOfCircleDirection1 = (int)(child_temp[1]);                                    //读出平面方向1
            //从STEP文件编号中中实例化出信息
            TableItem       TEMP_CART           = (TableItem)(Form1.MainStorage.TableNode[Form1.MainStorage.LookForNode(StepIdOfCirclePoint)]);
            CARTESIAN_POINT circle_center_point = (CARTESIAN_POINT)(TEMP_CART.node);
            TableItem       TEMP_DIR1           = (TableItem)(Form1.MainStorage.TableNode[Form1.MainStorage.LookForNode(StepIdOfCircleDirection1)]);
            DIRECTION       circle_plane_dir1   = (DIRECTION)(TEMP_DIR1.node);
            TableItem       TEMP_DIR2           = (TableItem)(Form1.MainStorage.TableNode[Form1.MainStorage.LookForNode(StepIdOfCircleDirection2)]);
            DIRECTION       circle_plane_dir2   = (DIRECTION)(TEMP_DIR2.node);
            //条件判断,如果符合一定的特殊情况,那么就开始执行三角剖分
            STLPoint     point1;
            STLPoint     point2;
            STLPoint     point3;
            STLDirection dir_temp;
            STLTriangle  temp_tri;

            if ((circle_plane_dir1.x_dir == 0) && (circle_plane_dir1.y_dir == 0) && (circle_plane_dir1.z_dir > 0))
            {
                //建立方向
                dir_temp       = new STLDirection();
                dir_temp.x_dir = 0;
                dir_temp.y_dir = 0;
                dir_temp.z_dir = 1;

                for (int i = 0; i < CircleDivision; ++i)
                {
                    //建立第一个点
                    point1   = new STLPoint();
                    point1.x = (float)circle_center_point.x_coord;
                    point1.y = (float)circle_center_point.y_coord;
                    point1.z = (float)circle_center_point.z_coord;
                    //建立第二个点
                    point2   = new STLPoint();
                    point2.x = (float)circle_center_point.x_coord + (float)(radius * Math.Cos(2 * Math.PI * (i / (float)CircleDivision)));
                    point2.y = (float)circle_center_point.y_coord + (float)(radius * Math.Sin(2 * Math.PI * (i / (float)CircleDivision)));
                    point2.z = (float)circle_center_point.z_coord;
                    //建立第三个点
                    point3   = new STLPoint();
                    point3.x = (float)circle_center_point.x_coord + (float)(radius * Math.Cos(2 * Math.PI * ((i + 1) / (float)CircleDivision)));
                    point3.y = (float)circle_center_point.y_coord + (float)(radius * Math.Sin(2 * Math.PI * ((i + 1) / (float)CircleDivision)));
                    point3.z = (float)circle_center_point.z_coord;
                    //将点和方向插入到三角形结构体之中
                    temp_tri         = new STLTriangle();
                    temp_tri.Dir     = dir_temp;
                    temp_tri.Vertex1 = point1;
                    temp_tri.Vertex2 = point2;
                    temp_tri.Vertex3 = point3;
                    STL_menber.Add(temp_tri);
                }
            }
            if ((circle_plane_dir1.x_dir == 0) && (circle_plane_dir1.y_dir == 0) && (circle_plane_dir1.z_dir < 0))
            {
                //建立方向
                dir_temp       = new STLDirection();
                dir_temp.x_dir = 0;
                dir_temp.y_dir = 0;
                dir_temp.z_dir = -1;

                for (int i = 0; i < CircleDivision; ++i)
                {
                    //建立第一个点
                    point1   = new STLPoint();
                    point1.x = (float)circle_center_point.x_coord;
                    point1.y = (float)circle_center_point.y_coord;
                    point1.z = (float)circle_center_point.z_coord;
                    //建立第二个点
                    point2   = new STLPoint();
                    point2.x = (float)circle_center_point.x_coord + (float)(radius * Math.Cos(2 * Math.PI * (i / (float)CircleDivision)));
                    point2.y = (float)circle_center_point.y_coord + (float)(radius * Math.Sin(2 * Math.PI * (i / (float)CircleDivision)));
                    point2.z = (float)circle_center_point.z_coord;
                    //建立第三个点
                    point3   = new STLPoint();
                    point3.x = (float)circle_center_point.x_coord + (float)(radius * Math.Cos(2 * Math.PI * ((i + 1) / (float)CircleDivision)));
                    point3.y = (float)circle_center_point.y_coord + (float)(radius * Math.Sin(2 * Math.PI * ((i + 1) / (float)CircleDivision)));
                    point3.z = (float)circle_center_point.z_coord;
                    //将点和方向插入到三角形结构体之中
                    temp_tri         = new STLTriangle();
                    temp_tri.Dir     = dir_temp;
                    temp_tri.Vertex1 = point1;
                    temp_tri.Vertex2 = point2;
                    temp_tri.Vertex3 = point3;
                    STL_menber.Add(temp_tri);
                }
            }
            if ((circle_plane_dir1.x_dir == 0) && (circle_plane_dir1.y_dir != 0) && (circle_plane_dir1.z_dir == 0))
            {
                //
            }
            if ((circle_plane_dir1.x_dir != 0) && (circle_plane_dir1.y_dir == 0) && (circle_plane_dir1.z_dir == 0))
            {
                //
            }
        }