广东工业大学：《计算机绘图》课程PPT教学课件（AutoCAD）14 三维建模应用（复杂水工建筑物实体创建）

广东工业大学：《计算机绘图》课程PPT教学课件（AutoCAD）13 三维建模（底座实例）

Abstract Model Specifications Build an abstract model of required software behavior using mathematically defined(perhaps using axioms )types(e. g sets, relations) Define operations by showing effects of that operation on the model Specification includes Model

9.1 尺寸标注组成 9.2 尺寸标注调用 9.3 设置尺寸样式 9.4 尺寸标注方式 9.5 编辑尺寸标注

6.1 图案填充 6.2 编辑填充图案 6.3 添加图案样式

• 4.1 推断约束 • 4.2 正交 • 4.3 极轴追踪 • 4.4 显示捕捉参照线 • 4.5 显示捕捉参照点 • 4.6 显示线宽 • 4.7 其他辅助命令

广东工业大学：《计算机绘图》课程PPT教学课件（AutoCAD）01 绪论（负责人：张鹏）

Formal design Reviews Associated with each of documentation phases Evaluate with respect to Customer requirements Prescribed standards and practices Contractual requirements

Reuse (Assume have source code, not a commercial product) Ariane 5. Therac-25. British AtC Expectation Significantly lower development costs and time. Amortize costs among all users or uses Assumptions

Fairly primitive and predictive power limited Function Points Count number of inputs and output, user interactions, external interfaces files used Assess each for complexity and multiply by a weighting factor Used to predict size or cost and to assess project productivity