Sample Code Analysis of. NET oscilloscope controls

Origin
A project under the responsibility of a colleague scans whether something in the hardware exists. Therefore, the boss wants to view the scan results through an image-based interface.
Therefore, we made a small tool to read and visualize the data provided by our colleagues.
The easiest way to display the scan results is the oscilloscope, but the functions of the third-party controls are too cumbersome. In the end, I decided to make a simple one myself.
Anyway, for me to use GDI to draw, it will not be too time-consuming to study unused third-party controls.

Ideas



The oscilloscope is actually such a simple diagram.
In fact, the overall idea is simple, so we divide an oscilloscope into three parts to draw.
The first is the above horizontal line, which usually indicates a high value.
The second is the horizontal line below, indicating the low straight
The third part is to link the vertical line
In height calculation, I use the simplest method to divide the height of a UC directly by 2 and use it as the center y coordinate.
Indicates that the high point is the center y coordinate up, the height/5 position
The low point is the center y coordinate down, the height/5 position
In the oscilloscope, remove the line at the beginning and end, and then split the data into two parts.
One part is the coordinates to be drawn at the high point, and the other part is the coordinates to be drawn at the low point.
With these two coordinates, you can draw vertical lines at the same time.
Proportional adjustment is based on the oscilloscope value and the width of the control.
Code
Copy codeThe Code is as follows:
Int max = m_mappingDatas [m_mappingDatas.Count-1];
M_Ratio = (max + m_mappingDatas [0] * 2)/m_width;
// Draw Wafer data
For (int I = 1, j = 0; I <m_mappingDatas.Count; I + = 2, j ++)
{
Float xStart = m_mappingDatas [I-1];
Float xEnd = m_mappingDatas [I];
Graphics. DrawLine (pen, xStart/m_Ratio, m_yPositionOfWafer,
XEnd/m_Ratio, m_yPositionOfWafer );
Graphics. DrawString (j + 1). ToString (), Control. DefaultFont, brush,
(XStart/m_Ratio)-2, m_yPositionOfNoWafer + 1 );
}
// Draw No Wafer data
Graphics. DrawLine (pen, 0, m_yPositionOfNoWafer,
M_mappingDatas [0]/m_Ratio, m_yPositionOfNoWafer );
For (int I = 2; I <m_mappingDatas.Count; I + = 2)
{
Float xStart = m_mappingDatas [I-1];
Float xEnd = m_mappingDatas [I];
Graphics. DrawLine (pen, xStart/m_Ratio, m_yPositionOfNoWafer,
XEnd/m_Ratio, m_yPositionOfNoWafer );
}
Graphics. DrawLine (pen, m_mappingDatas [m_mappingDatas.Count-1]/m_Ratio, m_yPositionOfNoWafer,
M_width, m_yPositionOfNoWafer );
// Draw vertical line
For (int I = 1; I <m_mappingDatas.Count; I + = 2)
{
Float X1 = m_mappingDatas [I-1];
Float X2 = m_mappingDatas [I];
Graphics. DrawLine (pen, X1/m_Ratio, m_yPositionOfWafer,
X1/m_Ratio, m_yPositionOfNoWafer );
Graphics. DrawLine (pen, X2/m_Ratio, m_yPositionOfWafer,
X2/m_Ratio, m_yPositionOfNoWafer );
}

In my code, I want to scan a semiconductor wafer, so the high point indicates that there is a wafer, and the low point indicates that there is no wafer.
Project download