卡核-综合-第72页

Opencascade TopoDS_Shape Orientation

Opencascade拓扑-几何介绍本文主要介绍TopoDS_Shape的Orientation属性： Opencascade拓扑-几何介绍 de 第三四五节里会看到： Edge orientation Face orientation More on location...

# 几何算法

_Gelin

3150

Boolean Algorithm On Brep

先介绍下Boolean运算的思路：对于每一个Face: 与另一个体的所有Face求交，用得到的有效曲线进行分割，得到subFaces根据交并差选择有效的subFaces，重新组装成新的Soi...

# 几何算法

_Gelin

1370

判断四个点是否构成矩形

判断四个点是否构成矩形 find if 4 points on a plane form a rectangle? 找出角点的质心：cx =（x1 + x2 + x3 + x4）/ 4，cy =（y1 &...

# 几何算法

_Gelin

1860

几何算法容差分类

1. 数值容差数值大小：double数值计算精度16位， 4位舍入所以一般取 1.0e-12 建模核心数值公差(mm)OCCT1.0e-12Opennurbs1.0e-12ACIS1.0e-11 解决问题: 0.1+0.2 !==...

# 几何算法

_Gelin

1220

Parametric Surface-Surface Intersect

Marching methods Reference : Why CAD Surface Geometry is Inexact Incremental progression along the intersection curve. This method use starting points on the intersection curve to ...

# 几何算法

_Gelin

1140

几何库推荐

1. Opennurbs: What is openNURBS? The openNURBS Toolkit reads and writes all Rhino 3DM files. Additionally, the openNURBS Toolkit provides NURBS evaluation tools and elementary geom...

# 几何算法

_Gelin

3520