Due to actual PDA applications, some curves are required, while existing controls cannot meet the requirements, so I have to try to design some class libraries to meet the current needs.
I. Basic demand:
Vector chart
Functional requirements:
● Title (background color, foreground color, font)
● Figure background color
● Coordinate point (display header, angle (0-360), color)
● Legend (whether it is displayed, color) // secondary attribute
● You can modify the color, angle, title, etc. of the coordinate point. (Identify index value)
Implementation:
Waveform map (XY figure)
Functional requirements:
● X-axis (font color, title value)
● Y axis (font color, title value)
● Title (background color, foreground color, font)
● Figure background color
● Curve series (curve 1, curve 2 ...)
● Curve: Add point (X-axis value, y-axis value), curve color
● Scale of XY axis: 0, max, intermediate scale
● Legend (color, display)
Implementation:
II. Class design and implementation
Class map UML representation: division 3
first part:
the second part:
the third part:
Mainly involved in several classes:
Chart class: chart inherited from system.windows.form.control
Linechart, VectorChart
Element Collection Class: BaseElementCollection Series Collection, Series can be dot, vector, etc.
Subclass Points, VectorCollection, LINSERIALS
Chart Elements Class: BaseElement associated with the collection class
Subclass Vector, Point, LINSERIAL
Problem: You cannot dynamically change the type of chart, such as switching between Vector and other chart types.
