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))
{
//
}
}
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))
{
//
}
}