gl-triangle-strip | 易学教程

Cube using single GL_TRIANGLE_STRIP

阅读更多关于 Cube using single GL_TRIANGLE_STRIP

问题 Is it possible to draw a whole cube using just a single GL_TRIANGLE_STRIP ? Obviously it's just the cube combinatorics I'm concerned about here, it might as well be stretched into any kind of box or similar object. 回答1: From the paper Optimizing Triangle Strips for Fast Rendering by Evans, Skiena, and Varshney: 回答2: For those of you who are lazy (like me), here's a copy-paste version of rob mayoff's answer ;) static const GLfloat cube_strip[] = { -1.f, 1.f, 1.f, // Front-top-left 1.f, 1.f, 1

Appearance of a triangle strip. Surface normals? Or windings?

阅读更多关于 Appearance of a triangle strip. Surface normals? Or windings?

问题 Below is a picture of what my outcome is. I am using flat shading and have put each vertex in their respectable triangle objects. Then I use these vertices to calculate the surface normals. I have been reading that because my triangles share similar vertices that calculating the normals may be an issue? But to me this looks like a windings problem given that every other one is off. I provided some of my code below to anyone who wants to look through it and get a better idea what the issue

add visual below finger swipe, Triangle strip like fruit ninja Andengine

阅读更多关于 add visual below finger swipe, Triangle strip like fruit ninja Andengine

I want to show a triangle strip when user swap finger on screen. I am not sure how to do it with AndEngine, using particle system or using sprites or using Triangle Strip algo... I haven't wrote any code because I am struck that what to do. I am uploading an image please share your ideas. Update someone has done this in Iphone but unfortunately I am unfamiliar with language syntax please help me in understanding algo of this code https://github.com/hiepnd/CCBlade **Effect I want ** Complete Android Project Download http://www.andengine.org/forums/resources/complete-runnable-project/1301 I have

add visual below finger swipe, Triangle strip like fruit ninja Andengine

阅读更多关于 add visual below finger swipe, Triangle strip like fruit ninja Andengine

问题 I want to show a triangle strip when user swap finger on screen. I am not sure how to do it with AndEngine, using particle system or using sprites or using Triangle Strip algo... I haven't wrote any code because I am struck that what to do. I am uploading an image please share your ideas. Update someone has done this in Iphone but unfortunately I am unfamiliar with language syntax please help me in understanding algo of this code https://github.com/hiepnd/CCBlade **Effect I want ** Complete

GL_TRIANGLE_STRIP vs GL_TRIANGLE_FAN

阅读更多关于 GL_TRIANGLE_STRIP vs GL_TRIANGLE_FAN

问题 I need an example of a polygon that can be done only by GL_TRIANGLE_STRIP and another polygon that can be done only by GL_TRIANGLE_FAN . 回答1: When knowing the difference between Triangle Strip and Triangle Fan a shape will be easy to make. Triangle Strip For instance a Triangle Strip is a set of connected triangles which share vertices. Example of Triangle Strip Using Triangle Strip we will be able to get the following output, using those given vertices. Triangle Fan Where a Triangle Fan is

gl_triangle_strip vs gl_triangle_fan

阅读更多关于 gl_triangle_strip vs gl_triangle_fan

I need an example of a polygon that can be done only by GL_TRIANGLE_STRIP and another polygon that can be done only by GL_TRIANGLE_FAN . Vallentin When knowing the difference between Triangle Strip and Triangle Fan a shape will be easy to make. Triangle Strip For instance a Triangle Strip is a set of connected triangles which share vertices. Example of Triangle Strip Using Triangle Strip we will be able to get the following output, using those given vertices. Triangle Fan Where a Triangle Fan is also a set of connected triangles, though all these triangles have a common vertex, which is the

Polygon triangulation into triangle strips for OpenGL ES

阅读更多关于 Polygon triangulation into triangle strips for OpenGL ES

问题 I am looking for a fast polygon triangulation algorithm that can triangulate not very complex 2D concave polygons (without holes) into triangle strips ready to be sent to OpenGL ES for drawing using GL_TRIANGLE_STRIP . I am aware of some algorithms but I couldn't find one that will fit my needs: http://www.flipcode.com/archives/Efficient_Polygon_Triangulation.shtml this algorithm works ok but the problem is it returns simple triangles which you can't draw with GL_TRIANGLE_STRIP , you need to

Generate a plane with triangle strips

阅读更多关于 Generate a plane with triangle strips

What would be the best algorithm to generate a list of vertices to draw a plane using triangle strips? I'm looking for a function which receives the plane's width and height and returns a float array containing correctly indexed vertices. width represents the number of vertices per row. height represents the number of vertices per column. float* getVertices( int width, int height ) { ... } void render() { glEnableClientState(GL_VERTEX_ARRAY); glVertexPointer(3, GL_FLOAT, 0, getVertices(width,heigth)); glDrawArrays(GL_TRIANGLE_STRIP, 0, width*height); glDisableClientState(GL_VERTEX_ARRAY); }

Generate a plane with triangle strips

阅读更多关于 Generate a plane with triangle strips

问题 What would be the best algorithm to generate a list of vertices to draw a plane using triangle strips? I'm looking for a function which receives the plane's width and height and returns a float array containing correctly indexed vertices. width represents the number of vertices per row. height represents the number of vertices per column. float* getVertices( int width, int height ) { ... } void render() { glEnableClientState(GL_VERTEX_ARRAY); glVertexPointer(3, GL_FLOAT, 0, getVertices(width