Using the GD2 function to draw geometry (PHP graphic image typical Application tutorial 4) This article mainly explains the use of the GD2 function to achieve the drawing of the geometry, first we need to create an image, in the previous article we have said that the creation of images is the first step of all image operations, Then draw the outline of the graph on the background based on the coordinate points, the final output graphics! Then we in a "Use image processing technology to generate verification code (PHP graphics image of the typical application tutorial 3)" described how to generate verification code, do not know whether the small partners have mastered this knowledge point, not yet familiar with the small partners can review! Today we explain the drawing of geometry! The main technical points in this article: in this paper, mainly using the GD2 function to draw the geometry, some of the functions in the previous article has been described in detail, the following is a common function of the introduction: (1) Imagecreatetruecolor () Function This function is used to suggest a full color picture file resource, the syntax of the function is as follows: int imagecreatetruecolor (int x_size,int&nb
1. Using the GD2 function to draw the geometry (PHP graphic image typical application tutorial 4)
Introduction: This article mainly explains the use of the GD2 function to achieve the drawing of the geometry, first of all we need to create an image, in the previous article we have said that the creation of images is the first step of all image operations, and then the background on the basis of the coordinates of the drawing contour, the final output graphics!
2. Detailed description of Java's example code for capturing pictures based on coordinates
Introduction: This article mainly introduces the Java based on the coordinates to intercept the image instance code of the relevant data, the need for friends can refer to the following
3. jquery (jcrop) +php cut pictures by coordinates
Description: jquery (jcrop) +php cut pictures by coordinates
4. Put a piece of code based on the coordinates to calculate the distance, there is lbs development can learn from
Introduction: Provide a variety of official and user-issued code samples, code reference, Welcome to Exchange Learning
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