simple orthographic drawing

I use the Python matplotlib module for a simple drawing operation, as a primer reference, directly below the code:#coding: Utf-8importnumpyasnpimportmatplotlib.pyplotaspltx=np.linspace (- Np.pi,np.pi,512,endpoint=true) C=np.cos (x) s=np.sin (x) plt.figure (1) #首先建立一张图figure1plt. Plot (X,c,color = ' Red ', linewidth= ' 1.0 ', label= ' COS ', linestyle= '-', alpha=0.5 ' Plt.plot (x,s, ' b--', label= "SIN") #

Learn the SDK and make a simple triangular drawing in d3d11 to familiarize yourself with the Direct11 drawing process. This article refers to the basic demo of the previous Directx11. The relatively Directx11 basic demo, which draws a triangle in Directx11, initializes the work primarily in Initdevice () 1: Create a vertex shader vertex shader;2: Describe our own

width of this rectangleRect. Height = $;//Change the height of this rectangleG.fillrectangle (B2, rect); //fill with gradient colorRect. Location =NewPoint (Ten,290); //A using System.Drawing.Drawing2D is required;LinearGradientBrush B3 =NewLinearGradientBrush (Rect, Color.yellow, Color.Black, lineargradientmode.horizontal); G.fillrectangle (B3, rect);Operating effect:Third, the conversion of the AxisThe axes in WinForm are different from the plane right angle axes that we normally touch, the a

Recently, GDI + this thing contact more, also did some simple examples, such as drawing board, imitation QQ and so on. The first contact this class, is because want to do the effect of imitation QQ. Skillfully very, learned how to do it after that. NET classroom teacher also happened to talk about C # drawing knowledge, and I myself on the internet to learn the

Now want to monitor the traffic and concurrency of the service, but not so much time to write the system, the other operation and maintenance system is not familiar with, so the existing RRDtool shell made a simple monitoring interface, temporary use, but also a small experiment. RRDtool is also just contact, a little exercise ProcessThe approximate process is this (CENTOS6 operating system) Initializing the RRD database Shell script

This course is about drawing simple geometries, before actually drawing, let's familiarize ourselves with some concepts.point, Line, and PolygonWe know the concept of a bit, line, and polygon in math (specifically, geometry), but these concepts are different in computers.Math point, only position, no size. However, in a computer, no matter how precision is calcul

Recently, I have been reviewing the source code of Ffplay. Ffplay is an example of the player provided by the FFmpeg project. Although Ffplay is just a simple example of a player, the amount of its source code is quite a bit. The previous look at the code, mainly focused on a "point" for the study, but not from the overall structure of the analysis. This article intends to make up for the shortcomings of the previous study, from the overall structure

A simple php drawing problem. I wrote the following code on the php page: lt ;? Php // header ('content-Type: text/jpeg '); // If commented, the execution is correct. $ Im = imagecreatetruecolor (200,200); imagep a simple php drawing problem ,,, I wrote the following code on the php page: // Header ('content-Type: te

There is ways to draw basic shapes like circles, ovals, lines, arcs, squares, rectangles, rounded rectangles, and pol Ygons. Specific drawing methods like Graphics.drawOval() . This example uses these methods. The second is to construct a shape and then use to Graphics2D.draw() draw the shape. See the package for java.awt.geom examples that create shapes.Seee575The quintessential Drawing program public void

); OnePdc->setpixelv (x+ -, Y,CLR);//Pixel points APdc->rectangle ( -, $, $, -);//Rectangle -}The effect is as follows:2. Draw a blue line code of 1 pixels wide from start P0 (20,30) to end point P1 (200,300) as follows:1 voidCmy00view::ondraw (cdc*PDC)2 {3cmy00doc* PDoc =getdocument ();4 assert_valid (PDOC);5 //Todo:add Draw code for native data here6 //draw a Blue Line 1 pixels wide from the beginning P0 (20,30) to the end point P1 (200,300),7CPen newpen,*P01dpen;8Newpen.createpen (Ps_

This is a simple drawing application implemented on canvas using javascript. You can draw images in the following area using a html5-supported Browser: Your browser does not support canvas! The function is very simple. The principle is similar to that of drag-and-drop. There are mainly three events: 1. Bind The mousedown event to the canvas to mark the start of t

Objective The advent of Requirejs makes the front-end code modularization easy, the current end of the project more and more, more and more code, modular code to make the project structure clearer, not only in the development of our ideas clearer, but also easier to maintain later. Here is a simple drawing program that I developed using Requirejs after learning Requirejs, running in the browser as shown in

For your illustrator software users to detailed analysis to share the design of a simple open opening listing icon to draw a tutorial. Tutorial Sharing: 1. In AI software, create a new 800*800 document, select a rectangular tool, draw a rectangular shape, and fill the color as shown 2, and then select the rectangle to effect-stylized-rounded corners, as shown in the figure 3, then select the rounded shape to the object-pa

I will give you a detailed analysis of the Illustrator software and share with you the tutorials on creating super-simple authentication marks.Tutorial sharing:1. In the Ai software, create a 800*800 document, select the rectangle tool, hold down shift to draw a square and fill the color, as shown in the figure.Then select the square to the effect-stylized-rounded corner, as shown in the figure.Then, select the rounded corner image to the object-path-

A simple PHP drawing problem 、、、 I write the following code on the PHP page: Header (' Content-type:text/jpeg '); This place can be executed correctly if it is annotated. $im =imagecreatetruecolor (200,200); Imagepng ($im); ?> If the above place is not annotated, you cannot draw the picture. The browser also prompts to download (download is not a picture) Ah, or open (after opening is garbled). Question:

Sight Body Viewing Volume is nothing but the region of 3D Cartesian spaces in that'll occupy the window. It is nothing but the minimum and maximum x, Y and Z values that are inside the window. So if a vertex are outside this range of x, Y and Z values then they are clipped by OpenGL before rendering can occur. Z Buffer The new term we have to deal with in addition to width and height of the ' an object ' in 3D graphics is depth. The depth of an object was its distance from the viewpoint. The

), need to determine the two points of the rectangle (upper left and bottom right), color, the type of line (not set to default). For example: import cv2importas npfromimportas pltimg = np.zeros((512,512,3),np.uint8)#生成一个空彩色图像cv2.rectangle(img,(20,20),(411,411),(55,255,155),5)plt.imshow(img,‘brg‘)(iii) Draw roundIt is also simple to draw a circle, just to determine the center and radius, the function:Cv2.circle (IMG, (380,0), 63, (255,0,0), 3), such

Java Interface Programming-create a simple framework for drawing graphics, java graphics Introduction: Three. java files are used in total to build a simple interface programming framework. 1st files: NotHelloWorldComponent. java // NotHelloWorldComponent. java1 import java. awt. *; 2 import java. awt. geom. *; 3 import javax. swing. *; 4 5 public class NotHelloW

;import Android.graphics.canvas;import Android.graphics.color;import Android.graphics.paint;import Android.graphics.rect;import Android.graphics.RectF; Import Android.view.view;public class MyView extends View{private Paint paint;public MyView (context context) {Super ( context); Paint = new paint (); Paint.setantialias (TRUE);//Set Brush non-aliased (if not set can see poor effect) This.setkeepscreenon (TRUE);//Set Background solid paint.setcolor (color.red); } @Overrideprotected void OnDr

It is relatively simple to generate a verification code and it is not difficult to draw a picture. However, everyone does not like to read the manual or do it by themselves. It is generally because I copied a piece of code online, in fact, drawing is quite interesting. However, the verification code generated by a common Font does not have any "combat power". It is easy to identify the content of the verifi