Nathan Drake

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About Nathan Drake

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  1. What is the ape to man? A laughing-stock or a painful embarrassment. And just the same shall man be to the overman.The overman is the meaning of the earth. - "Thus Spoke Zarathustra" by F.Nietzsche
  2. "Love sometimes wants to do us a great favor: hold us upside down and shake all the nonsense out." - Hafez
  3. I have written a code for drawing a bezier curve in OpenGL 2. for example this is my bezier curve that i have drawn:       i can setup my bezier by glMap1f() using my controlPoints and number of controlPoints (which is uOrder) void MyBezierLine::setup(const GLfloat* controlPoints, GLint uOrder) { controlpoints = controlPoints; uorder = uOrder; //setup the bezier glMap1f(GL_MAP1_VERTEX_3, //to be generated data 0.0f, //lower u range 1.0f, //higher u range 3, //u control point stride in array uorder, //order of u or number of u control point controlpoints); //the control points array //enabling bezier evaluator glEnable(GL_MAP1_VERTEX_3); } and i can simply draw them by glMapGrid1f() and glEvalMesh1(). void MyBezierLine::draw(GLenum draw_mode, //GL_LINE or GL_POINT GLint ures) { //setting the 1D grid map containing ures points //map to u range 0.0 - 1.0 glMapGrid1f(ures, 0.0f, 1.0f); //evaluate the bezier surface glEvalMesh1(draw_mode, 0, ures); } what i want to do is try to move an object along this bezier curve which has drawn by purple color. based on what i have searched over internet, it looks like i have to write the function and  calculate the bezier curve by myself to get the position of each point on the line. despite of that, i have to evaluate the rotation of the object based on the position of each point.   do you have any proper way or idea about how can i do this ?