用Assimp库导入3D模型的简易指南

#include "../include/app.hpp"
#include "../include/shader.hpp"
#include "../include/model.hpp"
#include <glm/glm.hpp>
#include <glm/gtc/matrix_transform.hpp>

class MyApp : public App {
private:
const GLfloat clearColor[4] = {0.2f, 0.3f, 0.3f, 1.0f};
Model allis;
Model buma;
Model saber;
Model cottage;
Model bugatti;
Shader* simpleShader;

public:
void init(){

ShaderInfo shaders[] = {
{GL_VERTEX_SHADER, "simpleShader.vert"},
{GL_FRAGMENT_SHADER, "simpleShader.frag"},
{GL_NONE, ""}
};
simpleShader = new Shader(shaders);
allis.loadModel( "allis.stl");
buma.loadModel("buma.stl");
saber.loadModel( "saber.stl");
bugatti.loadModel("bugatti/bugatti.obj");

glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);

glPolygonMode( GL_FRONT_AND_BACK, GL_LINE );
}

void display(){
glClearBufferfv(GL_COLOR, 0, clearColor);
glClear(GL_DEPTH_BUFFER_BIT);

glm::mat4 I(1.0f);
glm::vec3 X(1.0f, 0.0f, 0.0f);
glm::vec3 Y(0.0f, 1.0f, 0.0f);
glm::vec3 Z(0.0f, 0.0f, 1.0f);
float t = (float)glfwGetTime();

glm::mat4 view_matrix = glm::translate(I, glm::vec3(0.0f, 0.0f, -10.0f))
* glm::rotate(I, t, Y);

glm::mat4 projection_matrix = glm::perspective(glm::radians(45.0f), aspect, 1.0f, 100.0f);

glm::mat4 allis_model_matrix = glm::translate(I, glm::vec3(-3.0f, -1.5f, 0.0f))
* glm::scale(I, glm::vec3(1.0f, 1.0f, 1.0f)) * glm::rotate(I, glm::radians(-90.0f), X);

simpleShader->setModelMatrix(allis_model_matrix);
simpleShader->setViewMatrix(view_matrix);
simpleShader->setProjectionMatrix(projection_matrix);
simpleShader->setCurrent();
allis.render();

glm::mat4 buma_model_matrix = glm::translate(I, glm::vec3(-1.0f, -1.5f, 0.0f))
* glm::scale(I, glm::vec3(0.03f, 0.03f, 0.03f)) * glm::rotate(I, glm::radians(0.0f), X);
simpleShader->setModelMatrix(buma_model_matrix);
buma.render();

glm::mat4 saber_model_matrix = glm::translate(I, glm::vec3(7.5f, 0.6f, 1.0f))
* glm::scale(I, glm::vec3(0.03f, 0.03f, 0.03f)) * glm::rotate(I, glm::radians(-90.0f), X);
simpleShader->setModelMatrix(saber_model_matrix);
saber.render();

glm::mat4 bugatti_model_matrix = glm::translate(I, glm::vec3(5.0f, -1.0f, 0.0f))
* glm::scale(I, glm::vec3(0.2f, 0.2f, 0.2f)) * glm::rotate(I, glm::radians(0.0f), X);
simpleShader->setModelMatrix(bugatti_model_matrix);
bugatti.render();

}

~MyApp(){
if(simpleShader != NULL){
delete simpleShader;
}
}

};


DECLARE_MAIN(MyApp)