opengl camera tutorial

GLUTTutorial Prepare for transformation window Download the following vcpus and run the program (glu0.zip) (this is the project in the previous section ). You will see two windows: a console window and an OpenGL window. Change the window size so that the height and width are no longer equal, and the triangle is deformed. This occurs because you have not correctly set the projection matrix. The default value is the Perspective Projection Matrix and t

- WorldPos0); vec3 LightReflect = normalize(reflect(gDirectionalLight.Direction, Normal)); float SpecularFactor = dot(VertexToEye, LightReflect); SpecularFactor = pow(SpecularFactor, gSpecularPower); if (SpecularFactor > 0) { SpecularColor = vec4(gDirectionalLight.Color, 1.0f) * gMatSpecularIntensity * SpecularFactor; } } FragColor = texture2D(gSampler, TexCoord0.xy) * (AmbientColor + DiffuseColor + SpecularColor); } In the slice shader, we added three uniform variables, which saved the

the light source position, ambient light, diffuse light and other parameters directly copied on the line (later on the use of color texture, Because most of the time is still used in color coloring, simple color and color texture effect or the difference is very large, color texture as pure black pillars in the light is very realistic, and pure color brush on the black has no characteristics, draw a ball can be seen immediately??For more instructional videos and downloads, please pay attention

Lesson 1Spherical ing: This will teach you how to wrap the environment texture on your 3D model and make it look like it reflects the surrounding scenes.Sphere environment ing is a method for creating fast metal reflection effects, but it is not as accurate as in the real world! We will create this tutorial from the code of Lesson 18 and teach you how to create this effect.At the beginning, let's take a look at the introduction in hongbao. It defines

; // increase the rotation variable of the triangle (new)Rquad-= 0.15f; // reduce the rotation variable of the Quadrilateral (new)Return true; // continue running} This lesson is over again. Now you have mastered how to create objects in 3D space. The OpenGL screen must be imagined as a large drawing paper with many transparent layers. It is almost a cube composed of a large number of points. These points are filled with cubes from left to ri

Lesson 1Texture ing of graphic fonts: In this lesson, we will create a font with a texture based on the previous lesson, which is really simple.After publishing the first two tutorials on Bitmap fonts and contour fonts, I have received many emails. Many readers want to know how to assign texture maps to fonts. You can use the automatic texture coordinate generator. It generates texture coordinates for each polygon in the font.A small comment. This code is specially written for windows. It uses t

GLUTTutorial Animation So far, we have an OpenGL window with a white triangle, but it is not exciting at all. Now let's go to this tutorial to rotate the triangle. Let's go back to the main () function and add some additional settings. First, tell glut that we want a dual-buffer. The dual buffer creates a smooth animation by painting in the latter buffer and constantly switching the front and back buf

The size of the point defaults to 1 pixels, but it can also be changed. The changed command is glpointsize, and its function prototype is as follows:void Glpointsize (glfloat size);Size must be greater than 0.0f and the default value is 1.0f, in pixels.Note: For specific OpenGL implementations, there is a limit to the size of the point, and if you set a size that exceeds the maximum value, the setting may haveProblem.Examplevoid Mydisplay (void){Glcle

1. OpenGL development Environment Construction Reference http://brothergrup.iteye.com/blog/16024712. Fill the color of the triangle:The Fill color function for Glcolor (3/4) * (R,G,B) 3 or 4 means that the numeric type rgb/rgba;* represents Rgba (B,i.) will eventually be mapped to [0-1].How to map is to take the value of the Write/current type maximum value such as Byte is -128~127 glcolor3b (1,0,0) equivalent to glcolor3f (1/127f,0,0) less than 0 whe

Original post address: http://ogldev.atspace.co.uk/www/tutorial05/tutorial05.html In this tutorial, we will be exposed to a new shader variable uniform variables. The difference between this variable and the attribute variable is that when each vertex shader is called, the corresponding attribute values of the vertex are loaded from the vertex buffer according to the position of the attribute, while the uniform variable remains unchanged for each dra

The transformation between viewing and modeling is closely related to the camera to place the tripod and adjust the position and angle of the object to be photographed. Usually, these two transformations are defined using a modelview transformation matrix. For the same coordinate transformation, you can use different methods to imagine this transformation. For example, if you want to translate a distance from the