///////////////////////////////////////////////////////////////////////
//
// MA-101156682-triangles.cpp
//
///////////////////////////////////////////////////////////////////////
//*************************************************************************** // HG-22155-Assignment2.cpp by Abel Moore 101156682 (C) 2018 All Rights Reserved. // // Assignment 1 submission. // // Description: this looks cool // Click run to see the results. // *****************************************************************************
using namespace std;
#include "stdlib.h"
#include "time.h"
#include "vgl.h"
#include <iostream>
#include "LoadShaders.h"
#include "glm\glm.hpp"
#include "glm\gtc\matrix_transform.hpp"
enum VAO_IDs { Triangles, NumVAOs };
enum Buffer_IDs { ArrayBuffer, NumBuffers };
enum Attrib_IDs { vPosition = 0 };
GLuint Buffers[NumBuffers];
#define X_AXIS glm::vec3(1,0,0)
#define Y_AXIS glm::vec3(0,1,0)
#define Z_AXIS glm::vec3(0,0,1)
const GLuint NumVertices = 10;
const GLfloat scale = 0.5f;
GLfloat vertices[NumVertices][2];
glm::mat4 Projection;
GLuint gVAO;
GLuint MatrixID;
glm::mat4 MVP;
glm::mat4 View;
GLuint colours_vbo;
void init(void)
{
//Specifying the name of vertex and fragment shaders.
ShaderInfo shaders[] = {
{ GL_VERTEX_SHADER, "triangles.vert" },
{ GL_FRAGMENT_SHADER, "triangles.frag" },
{ GL_NONE, NULL }
};
//Loading and compiling shaders
GLuint program = LoadShaders(shaders);
glUseProgram(program); //My Pipeline is set up
//Generating two buffers, one is used to store the coordinates of the vertices
//The other one is not used. Just wanted to show that we can allocate as many as buffers, some of which might left unused.
GLuint cube_IBO;
glGenBuffers(1, &cube_IBO);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, cube_IBO);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(index_list), index_list , GL_STATIC_DRAW);
glBindAttribLocation(program, 0, "vPosition");
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, BUFFER_OFFSET(0));
glEnableVertexAttribArray(0);
glEnable(GL_DEPTH_TEST);
Projection = glm::perspective(glm::radians(45.0f), 4.0f / 3.0f, 0.1f, 100.0f);
float angle = glutGet(GLUT_ELAPSED_TIME) / 1000.0 * 45; // 45° per second
transformObject(1.0f, Z_AXIS, angle, glm::vec3(0, 0, 0));
glDrawArrays(GL_LINE_LOOP, 0, 4);
}
void transformObject(float scale, glm::vec3 rotationAxis, float rotationAngle, glm::vec3 translation) {
glm::mat4 Model;
Model = glm::mat4(1.0f);
Model = glm::translate(Model, translation);
Model = glm::rotate(Model, glm::radians(rotationAngle), rotationAxis);
Model = glm::scale(Model, glm::vec3(scale));
MVP = Projection * View * Model;
glUniformMatrix4fv(MatrixID, 1, GL_FALSE, &MVP[0][0]);
}
void KeyDown(unsigned char key, int x, int y){
switch(key) {
case'w':
// call a function
break;
case's':
// call a function
break;
default:
break;
}
}
void KeyUp(unsigned char key, int x, int y) {
switch (key) {
case'w':
// call a function
break;
case's':
// call a function
break;
default:
break;
}
}
//---------------------------------------------------------------------
//
// display
//
void
display(void)
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
//Selecting the buffer
glBindBuffer(GL_ARRAY_BUFFER, Buffers[0]);
float cube_vertices[] = { -0.45, -0.45, 0.45,
0.45, -0.45, 0.45, };
GLushort cube_index_array[] = {
// front
0, 1, 2,
2, 3, 0,
// top
1, 5, 6,
6, 2, 1,
};
//Pushing the coordinates of the vertices into the buffer
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
//Ordering the GPU to start the pipeline
glDrawElements(GL_TRIANGLES, 36, GL_UNSIGNED_SHORT, 0);
glutSwapBuffers();
}
void idle()
{
}
void Timer(int id) {
glutPostRedisplay();
glutTimerFunc(33, Timer, 0);
};
//---------------------------------------------------------------------
//
// main
//
int
main(int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE);
glutInitWindowSize(600, 600);
glutCreateWindow("Abel Moore 101156682");
glutKeyboardFunc(KeyDown);
glutKeyboardFunc(KeyUp);
glutTimerFunc(1000.0 / 60.0, Timer, 0);
glutGet(GLUT_ELAPSED_TIME);
glewInit(); //Initializes the glew and prepares the drawing pipeline.
init();
glutDisplayFunc(display);
glutIdleFunc(idle);
glutMainLoop();
}
can anyone help me index_list says its undefined how do I define it
