1 API situation of VGU library cnS32_t cnvguBeginJob(cnvguHandle_t *phHandle); – This function may start an image processing task, and its parameter may be a handle to the processing task. The return value may be an error code (S32_t is usually used for error codes) or a status code. cnS32_t cnvguCancelJob(cnvguHandle_t hHandle); – This function may […]
Tag: draw
Qt opengl draws points, lines, triangles, polygons (2)
Article directory 1. Related macro definition parameters 2. Code and example diagrams 1. Point LG_POINTS 0x0000 2. Line GL_LINES 0x0001 3. Line GL_LINE_LOOP 0x0002 4. GL_LINE_STRIP 0x0003 5. GL_TRIANGLES 0x0004 6. GL_TRIANGLE_STRIP 0x0005 7. GL_TRIANGLE_FAN 0x0006 8. GL_QUADS 0x0007 9. GL_QUAD_STRIP 0x0008 10. GL_POLYGON 0x0009 Summarize 1. Related macro definition parameters #define GL_POINTS 0x0000 // […]
Function for drawing images in opencv
Introduction to Common Functions A brief introduction to C++ functions in OpenCV for drawing different graphics: Draw a rectangular box: cv::rectangle(image, cv::Point pt1, cv::Point pt2, cv::Scalar color, int thickness); image: target image pt1 and pt2: diagonal vertex coordinates of the rectangle color: Color of the rectangle thickness: The thickness of the line. If it is […]
Canvas draws simple raindrop collision effect
Canvas Example Application 100 + This column provides basic knowledge of canvas, advanced animation, related application extensions and other information. As a part of HTML, canvas is an important foundation for the visualization of images, icons and maps. Learning canvas will be very important in other applications. Article directory renderings source code canvas basic properties […]
How to implement parametric drawing (online editing of CAD) after integrating the web CAD SDK
Foreword MxCAD’s WEB CAD SDK provides the function of parametric drawing. We can view all instances of classes inherited from McDbEntity, and they can all perform parametric drawing. First we should display a drawing on the page. Please follow the instructions in the mxcad introductory document or view the code to initialize various sample projects […]
vc++ big job mfc simple drawing program
Major job requirements: a drawing program Using VC++, MFC can draw at least 4 types of graphics; it has functions such as adding, deleting, modifying, (checking, optional, and adding attribute functions) to fill in unlimited amounts, and stroked graphics can be saved and opened. I’m really busy, but there are still people urging me to […]
Lecture 9 | How to draw the game background?
In the previous article, we described various basic knowledge, then sorted out the development process, and took you to create a form. Now all we have to do is add things to this form. The difficulty will gradually increase as the progress progresses. At this stage, we only cover some basic knowledge, and we only […]
Front-end (html) uses Echarts to draw heat maps – json data format
1. Download the echarts.js file from the official website 1.1 Echart official website: Download – Apache ECharts 1.2 Drag the downloaded echarts.js file to the same directory as the html file 2. Use Python to implement data file format conversion (.xlsx-.json) 2.1 Reasons for converting data format PM2.5 monitoring data: 30 days a month, monitoring […]
Follow Nature Communications to learn drawing: texture histogram + add saliency labels!
Article Directory Reproduce picture Set the working path and load related R packages Read the data set data visualization Calculate mean and standard deviation variance analysis Between-group t-test Figure a Visualization process Figure b Visualization process Merge graph ab Learn drawing with “Nature Communications”. Today, I will mainly consolidate the previously shared knowledge points by […]
Lecture 4 | The wonderful use of low-level drawing interfaces
The previous section introduced the concept of game engines and their role in game development. At the same time, the working methods behind the game engine are also mentioned. At the code level, the game engine is a set of encapsulated implementations of underlying graphics, audio, and operating system interfaces. On this basis, an example […]