opengl 3 0

to, and using the same iterative method for the next judgment. In addition to drawing lines and circles, you can also draw ellipses, hyperbolic curves, and so on.There is a little more experience is that this problem must be seen in foreign forums to find a good explanation.Code:#include #includevoidMyinit (void) {Glclearcolor (1.0f,1.0f,1.0f,0.0f); glcolor3f (1.0,0.0,0.0); Glmatrixmode (gl_projection); Glloadidentity (); Gluortho2d (0.0,500.0,0.0,500.0); Glmatrixmode (Gl_modelview);}void

drawing, and no more OpenGL function appears in the Render function, it calls a fixed function, this function will be described in the next article.Group_command: Groupcommand class Drawing Group, when a node consists of more than two drawing commands, store this drawing command in an element in another _rendergroups and store the pointer of this element as a node in _ Rendergroups[0]. The whole Group_comm

the camera position and specify it through the point pointed by the camera. You also need to specify an upward vector. For convenience, the vector is usually set to (0, 1, 0) or the Y axis in the coordinate system. Void glulookat (gldouble eyex, gldouble eyey, gldouble Eyez, Gldouble ATX, gldouble Aty, gldouble atz, Gldouble UPX, gldouble upy, gldouble upz) // Determine a matrix that can be used for camera

Learning OpenGL (3) drawing spiral graphics [Email protected] Http://blog.csdn.net/kezunhai In OpenGL, graphics are composed of some basic elements, which interpret a set of fixed points or vertex lists as some images drawn on the screen. The smallest element in OpenGL is a vertex. There are 10 elements in

all the drawing code{Glclear (gl_color_buffer_bit | gl_depth_buffer_bit); // clear the screen and depth CacheGlloadidentity (); // resets the model observation matrix.Gltranslatef (-1.5f, 0.0f,-6.0f); // move 1.5 units left and 6.0 to the screen Glbegin (gl_triangles); // draw a triangle If you still remember the content of the last lesson, this Code draws a triangle in the left half of the screen. The next line of code is the first time we use the glcolor3f (R, G, B) command ). The three param

been explained at the beginning of the article // Caching using vertex buffer objects int VBO, VAO; Glgenvertexarrays (1, VAO); Glgenbuffers (1, VBO); // buffering objects for binding Glbindvertexarray (VAO); Glbindbuffer (Gl_array_buffer, VBO); Use of Buffered objects 1 //Copy the defined vertex data into buffered memory2 //The first parameter, the buffer type, the second parameter data size, the third parameter sends the data, the fourth parameter, the gr

pressed or released" if (button== glut_right_b Utton)//callback was due to a release/press of the right button Equivalent to "If the right mouse button is pressed or is released" if (button== Glut_middle_button)//callback is due to a release/press of the middle Button// Equivalent to "If the middle mouse button is pressed or released" Copyright NOTICE: This article for Bo Ma

Call OpenGL in cocos2dx (3.X) I have been using pomelo to write back-end data for the past few months. Now the project is coming to an end and I have finally had time to study OpenGL-related things. OpenGL itself is cross-platform, but the development environment of each platform is not the same. It is much easier to p

, Glsizei stride, const glvoid* pointer);DrawGldrawarrays (glenum mode, glint first, glsizei count);//Direct read vertex data drawingGldrawelements (glenum mode, Glsizei count, glenum type, const glvoid* indices); Draw based on index (that is, all vertices are in an array, using an index to refer to the vertex data)The following is an example of drawing two triangles based on the API described above.#include Note: The code is written according to Red Book, some auxiliary code (such as Loadshader

51nod 1090 3 count and 0 amp; 51nod 1267 4 count and 0 (marked as binary) Question meaning: The sum of 3 is 0: An unordered array with the length of N is given. The elements in the array are integers, positive and negative values include

glint and glsizei ),F indicates a 32-bit floating point number (OpenGL defines this type as glfloat and glclampf ),D indicates a 64-bit floating point number (OpenGL defines this type as gldouble and glclampd ).V indicates that several parameters passed will use pointers. See the example below.These functions have the same function except for the type and number of parameters. For example, the functions of

Nested display list To support more complex plotting, the display list also supports nesting. That is, when creating a display list using glnewlist () or glcalllists () call the defined display list. Theoretically, the number of nested layers in the generated list can be 2 ^ 31-2, but in fact there are two reasons why this is not supported. First, when the number of nested layers increases, it takes a lot of resources and time to create a display list. Second, even if you can create multi-level

-rate. Each item has a value between 0 and 1. For exampleDiffuse [4] = {1, 0, 1 };Glmaterialfv (gl_front, gl_diffuse, diffuse );It will make the object red in the light of a red element.5.2Use color trackingIt is inconvenient to specify the color for the elements after the lighting system is enabled. First, we need to create an array, and then call the glmaterial function to pass the array to the material t

The O f i c e 2 0 0 3 installation on your computer is corrupted and Setup cannot continue. Please remove or repair O f i c e 2 0 0 3 product and rerun The Office 2003 installation on your computer is corrupted and Setup cann

Tags: blog http using strong file HTMLW?i?n?d?o? w?s?2?0?0?3, Jian Li? F? T? P. Service: w?i?n?d?o? w?s?2?0?0?3, Jian Li? F? T? P-Services-service deviceFTP connection 530 User Thanks for sharing: http://blog.sina.com.cn/s/blog_5f

Topic Meaning:3 Number of the and for 0:http://www.51nod.com/onlineJudge/questionCode.html#!problemId=1090Given an unordered array of length n, the elements in the array are integers, with positive negative including 0, and not equal to each other. A combination of 3 numbers from which all and =

10. Dynamic Planning (3) -- 0-1 backpack problem, 0-1 backpack In the previous article "9. Dynamic Planning (2) -- Subsets and problems", we talked about Subsets and problems and their implementations. Backpack problems are actually a subset and a type of problem, but the problem is not "determining the problem" but "optimal problem ". The problem with a backpack

Two-dimensional images can be drawn in OpenGL, including bitmap and image. 1. The differences between bitmap and image are as follows: In bitmap, only one bit (0 or 1) is stored for each pixel of the image, which indicates whether to use the current color to draw or not, while in image, each pixel of the image may store many places, stores the color information of each channel; Bitmap is a group of points d

Two-dimensional images can be drawn in OpenGL, including bitmap and image. 1. The differences between bitmap and image are as follows: In bitmap, only one bit (0 or 1) is stored for each pixel of the image, which indicates whether to use the current color to draw or not, while in image, each pixel of the image may store many places, stores the color information of each channel; Bitmap is a group of points d

This time, OpenGL is used to draw a circle, and a solid pentagram is drawn in the middle. 1. Draw solid five corners: Since the previous use of polygen painting will fail, maybe the GPU hardware will be different, so the use of polygen to draw a solid five-pointed star is not reliable; Therefore, polygen is not required to draw a star using a triangle. 2 circles Because there is no circular shape in glew, we can only manually set the vertex