Stuff

[opengl.git] / main.cpp

diff --git a/main.cpp b/main.cpp
index 1df11ec9417b9e7e94659686c276da0524ed9e71..742c8983840eff62fbb68652ba0365fe2da0c72b 100644 (file)
--- a/main.cpp
+++ b/main.cpp
@@ -14,55 +14,69 @@
 #include <glm/glm.hpp>
 #include <glm/ext.hpp>
 #include <glm/gtc/type_ptr.hpp>
 #include <glm/glm.hpp>
 #include <glm/ext.hpp>
 #include <glm/gtc/type_ptr.hpp>

+#include "model.hpp"
+#include "teapot.h"

 
 #pragma clang diagnostic ignored "-Wdeprecated-declarations"
 
 using namespace std;
 
 
 #pragma clang diagnostic ignored "-Wdeprecated-declarations"
 
 using namespace std;
 

-GLuint pyramidVao, lightVao;
-GLuint gradientProgId, solidProgId;
-glm::vec3 camPos   = glm::vec3(0.0f, 0.0f,  -5.0f);
+GLuint pyramidVao, lightVao, teapotVao;
+GLuint gradientProgId, plainProgId, normalProgId, solidProgId, textureProgId;
+glm::vec3 camPos   = glm::vec3(0.0f, 0.0f,  0.0f);

 glm::vec3 camFront = glm::vec3(0.0f, 0.0f, 1.0f);
 glm::vec3 camUp    = glm::vec3(0.0f, 1.0f,  0.0f);
 float yaw = 1.57, pitch = 0;
 bool doScale, doRotate, doTranslate;
 glm::vec3 camFront = glm::vec3(0.0f, 0.0f, 1.0f);
 glm::vec3 camUp    = glm::vec3(0.0f, 1.0f,  0.0f);
 float yaw = 1.57, pitch = 0;
 bool doScale, doRotate, doTranslate;

+Model *monkeyHead, *chest;
+glm::vec3 lightPos(0);
+
+const int WIDTH = 800, HEIGHT = 600;
+const float ASPECT = (float)WIDTH / (float)HEIGHT;

 
 void setProjectionAndViewUniforms(GLuint progId) {
 
 void setProjectionAndViewUniforms(GLuint progId) {

-       GLuint projId = glGetUniformLocation(progId, "projection");
-       glm::mat4 proj = glm::perspective(glm::radians(45.f), 1.33f, 0.01f, 10000.f);
-       glUniformMatrix4fv(projId, 1, GL_FALSE, glm::value_ptr(proj));
+       GLuint projLoc = glGetUniformLocation(progId, "projection");
+       glm::mat4 proj = glm::perspective(glm::radians(45.f), ASPECT, 0.01f, 10000.f);
+       glUniformMatrix4fv(projLoc, 1, GL_FALSE, glm::value_ptr(proj));

 
 

-       GLuint viewId = glGetUniformLocation(progId, "view");
+       GLuint viewLoc = glGetUniformLocation(progId, "view");

        glm::mat4 view = glm::lookAt(camPos, camPos + camFront, camUp);
        glm::mat4 view = glm::lookAt(camPos, camPos + camFront, camUp);

-       glUniformMatrix4fv(viewId, 1, GL_FALSE, glm::value_ptr(view));
+       glUniformMatrix4fv(viewLoc, 1, GL_FALSE, glm::value_ptr(view));

 }
 
 }
 

-void drawLight(float d, glm::vec3 lightPos) {
-       glUseProgram(solidProgId);
+void setLightColorAndPos(GLuint progId, glm::vec3 lightPos, glm::vec4 lightColor) {
+       GLuint lightColorLoc = glGetUniformLocation(progId, "lightColor");
+       glUniform4fv(lightColorLoc, 1, glm::value_ptr(lightColor));
+
+       GLuint lightPosLoc = glGetUniformLocation(progId, "vLightPos");
+       glUniform3fv(lightPosLoc, 1, glm::value_ptr(lightPos));
+
+       GLuint viewPosLoc = glGetUniformLocation(progId, "vViewPos");
+       glUniform3fv(viewPosLoc, 1, glm::value_ptr(camPos));
+}
+
+void drawLight(float d, glm::vec3 lightPos, glm::vec4 lightColor) {
+       glUseProgram(plainProgId);

        glBindVertexArray(lightVao);
        glBindVertexArray(lightVao);

-       setProjectionAndViewUniforms(solidProgId);
+       setProjectionAndViewUniforms(plainProgId);

        glm::mat4 model = glm::translate(glm::mat4(1.f), lightPos);
        model = glm::scale(model, glm::vec3(0.2));
        glm::mat4 model = glm::translate(glm::mat4(1.f), lightPos);
        model = glm::scale(model, glm::vec3(0.2));

-       GLuint modelId = glGetUniformLocation(solidProgId, "model");
-       glUniformMatrix4fv(modelId, 1, GL_FALSE, glm::value_ptr(model));
+       GLuint modelLoc = glGetUniformLocation(plainProgId, "model");
+       glUniformMatrix4fv(modelLoc, 1, GL_FALSE, glm::value_ptr(model));

 
 

-       GLuint colorLoc = glGetUniformLocation(solidProgId, "color");
-       glm::vec3 color = glm::vec3(1, 1, 1);
-       glUniform3fv(colorLoc, 1, glm::value_ptr(color));
+       GLuint colorLoc = glGetUniformLocation(plainProgId, "color");
+       glm::vec4 color(lightColor);
+       glUniform4fv(colorLoc, 1, glm::value_ptr(color));

                
        glDrawArrays(GL_TRIANGLES, 0, 36);
 };
 
                
        glDrawArrays(GL_TRIANGLES, 0, 36);
 };
 

-void drawPyramids(float d, glm::vec3 lightPos) {
+void drawPyramids(float d, glm::vec3 lightPos, glm::vec4 lightColor) {

        glUseProgram(gradientProgId);
        glBindVertexArray(pyramidVao);
        setProjectionAndViewUniforms(gradientProgId);
 
        glUseProgram(gradientProgId);
        glBindVertexArray(pyramidVao);
        setProjectionAndViewUniforms(gradientProgId);
 

-       GLuint lightPosLoc = glGetUniformLocation(gradientProgId, "lightPos");
-       glUniform3fv(lightPosLoc, 1, glm::value_ptr(lightPos));
-       
-       GLuint viewPosLoc = glGetUniformLocation(gradientProgId, "viewPos");
-       glUniform3fv(viewPosLoc, 1, glm::value_ptr(camPos));
+       setLightColorAndPos(gradientProgId, lightPos, lightColor);

 
        GLuint modelId = glGetUniformLocation(gradientProgId, "model");
 
 
        GLuint modelId = glGetUniformLocation(gradientProgId, "model");
 


@@ -86,19 +100,89 @@ void drawPyramids(float d, glm::vec3 lightPos) {
 
                glUniformMatrix4fv(modelId, 1, GL_FALSE, glm::value_ptr(model));
                
 
                glUniformMatrix4fv(modelId, 1, GL_FALSE, glm::value_ptr(model));
                

-               glDrawArrays(GL_TRIANGLES, 0, 12);
+               glDrawArrays(GL_TRIANGLES, 0, 18);

        }
 
 };
 
        }
 
 };
 

+enum TeapotProjection { teapotOrtho, teapotCamera, teapotPerspStatic, teapotPerspAnimated };
+
+void drawTeapot(TeapotProjection proj, bool rotate, float d, glm::vec3 lightPos, glm::vec4 lightColor) {
+       glUseProgram(normalProgId);
+       
+       GLuint projLoc = glGetUniformLocation(normalProgId, "projection");
+       GLuint viewLoc = glGetUniformLocation(normalProgId, "view");
+       switch (proj) {
+       case teapotCamera:
+               setProjectionAndViewUniforms(normalProgId);
+               break;
+       case teapotOrtho:
+               {
+                       glm::mat4 proj = glm::ortho(-5.f * ASPECT, 5.f * ASPECT, -5.f, 5.f, 0.01f, 1000.f);
+                       glUniformMatrix4fv(projLoc, 1, GL_FALSE, glm::value_ptr(proj));
+
+                       glm::vec3 camPos(-5, 5, -5), camFront = glm::vec3(0) - camPos;
+                       glm::mat4 view = glm::lookAt(camPos, camPos + camFront, camUp);
+                       glUniformMatrix4fv(viewLoc, 1, GL_FALSE, glm::value_ptr(view));
+               }
+               break;
+       case teapotPerspStatic:
+       case teapotPerspAnimated:
+               {
+                       float fov = glm::radians(45.f);
+                       if (proj == teapotPerspAnimated)
+                               fov += glm::radians(sin(d) * 30.f);
+                       glm::mat4 proj = glm::perspective(fov, ASPECT, 0.01f, 10000.f);
+                       glUniformMatrix4fv(projLoc, 1, GL_FALSE, glm::value_ptr(proj));
+
+                       glm::mat4 view = glm::lookAt(glm::vec3(0, 0, -10), glm::vec3(0), camUp);
+                       glUniformMatrix4fv(viewLoc, 1, GL_FALSE, glm::value_ptr(view));
+               }
+               break;
+       }
+       setLightColorAndPos(normalProgId, lightPos, lightColor);
+       glBindVertexArray(teapotVao);
+       GLuint modelId = glGetUniformLocation(normalProgId, "model");
+       glm::mat4 model(1);
+       model = glm::scale(model, glm::vec3(0.3));
+       if (rotate) model = glm::rotate(model, d, glm::vec3(0, 1, 0));
+       glUniformMatrix4fv(modelId, 1, GL_FALSE, glm::value_ptr(model));
+
+       glDrawArrays(GL_TRIANGLES, 0, teapot_vertex_count);
+}
+

 void display() {
 void display() {

+       glClearColor(0.5, 0.5, 0.5, 1);

        glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
        float d = (float)glutGet(GLUT_ELAPSED_TIME) * 0.001f;
 
        glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
        float d = (float)glutGet(GLUT_ELAPSED_TIME) * 0.001f;
 

-       glm::vec3 lightPos = glm::vec3(sin(d) * 10, 0, cos(d) * 10);
+       /* glm::vec3 lightPos = glm::vec3(sin(d / 10.f) * 10, 0, cos(d / 10.f) * 10); */
+       glm::vec4 lightColor(1, 1, 1, 1);
+
+       drawLight(d, lightPos, lightColor);

 
 

-       drawPyramids(d, lightPos);
-       drawLight(d, lightPos);
+       glUseProgram(textureProgId);
+       setProjectionAndViewUniforms(textureProgId);
+       setLightColorAndPos(textureProgId, lightPos, lightColor);
+
+       Model::Node *top = chest->find("top");
+       top->model = glm::translate(glm::mat4(1), glm::vec3(0, 1, -1));
+       top->model = glm::rotate(top->model, sin(d / 2.5f) * 0.5f, glm::vec3(1, 0, 0));
+       top->model = glm::translate(top->model, glm::vec3(0, -1, 1));
+       
+       /* Model::Node *jewels = chest->find("jewels"); */
+       /* jewels->model = glm::scale(glm::mat4(1), glm::vec3((sin(d) + 1.2f) / 2.f)); */
+
+       /* Model::Node *lock = chest->find("lock"); */
+       /* lock->model = glm::translate(glm::mat4(1), glm::vec3(0.22610, 3.36478, -0.75649)); */
+       /* lock->model = glm::rotate(lock->model, (d / 2.5f), glm::vec3(0, 1, 0.4)); */
+       /* lock->model = glm::translate(lock->model, -glm::vec3(0.22610, 3.36478, -0.75649)); */
+
+       /* Model::Node *key = chest->find("key"); */
+       /* key->model = glm::translate(glm::mat4(1), glm::vec3(0, 0, sin(d))); */
+       
+       /* chest->getRoot()->model = glm::translate(glm::mat4(1), lightPos); */
+       chest->draw();

 
        glutSwapBuffers();
 }
 
        glutSwapBuffers();
 }


@@ -166,12 +250,20 @@ GLuint setupBuffers(glm::vec3* vertices, glm::vec3* normals, GLuint progId) {
                1, 0, 0, 1,
                0, 0, 1, 1,
 
                1, 0, 0, 1,
                0, 0, 1, 1,
 

+               0, 1, 0, 1,
+               1, 0, 0, 1,
+               0, 0, 1, 1,
+
+               0, 1, 0, 1,
+               1, 0, 0, 1,
+               0, 0, 1, 1,
+               

                0, 1, 0, 1,
                1, 0, 0, 1,
                0, 0, 1, 1
        };
 
                0, 1, 0, 1,
                1, 0, 0, 1,
                0, 0, 1, 1
        };
 

-       GLuint numVerts = 12;
+       GLuint numVerts = 18;

 
        GLuint vbo;
        glGenBuffers(1, &vbo);
 
        GLuint vbo;
        glGenBuffers(1, &vbo);


@@ -293,6 +385,29 @@ void setupLightBuffers(GLuint progId) {
        glVertexAttribPointer(posLoc, 3, GL_FLOAT, GL_FALSE, 0, 0);
 }
 
        glVertexAttribPointer(posLoc, 3, GL_FLOAT, GL_FALSE, 0, 0);
 }
 

+void setupTeapotBuffers(GLuint progId) {
+       GLuint vbos[2];
+       glGenBuffers(2, vbos);
+       glBindBuffer(GL_ARRAY_BUFFER, vbos[0]);
+       glBufferData(GL_ARRAY_BUFFER, 3 * teapot_vertex_count * sizeof(float), teapot_vertex_points, GL_STATIC_DRAW);
+       glBindBuffer(GL_ARRAY_BUFFER, vbos[1]);
+       glBufferData(GL_ARRAY_BUFFER, 3 * teapot_vertex_count * sizeof(float), teapot_normals, GL_STATIC_DRAW);
+
+       glGenVertexArrays(1, &teapotVao);
+       glBindVertexArray(teapotVao);
+
+       GLuint posLoc = glGetAttribLocation(progId, "vPosition");
+       GLuint normalLoc = glGetAttribLocation(progId, "vNormal");
+
+       glEnableVertexAttribArray(posLoc);
+       glBindBuffer(GL_ARRAY_BUFFER, vbos[0]);
+       glVertexAttribPointer(posLoc, 3, GL_FLOAT, GL_FALSE, 0, NULL);
+       
+       glEnableVertexAttribArray(normalLoc);
+       glBindBuffer(GL_ARRAY_BUFFER, vbos[1]);
+       glVertexAttribPointer(normalLoc, 3, GL_FLOAT, GL_FALSE, 0, NULL);
+}
+

 void validateProgram(GLuint progId) {
        glValidateProgram(progId);
        
 void validateProgram(GLuint progId) {
        glValidateProgram(progId);
        


@@ -307,7 +422,7 @@ void validateProgram(GLuint progId) {
 }
 
 void init() {
 }
 
 void init() {

-       glm::vec3 vertices[12] = {
+       glm::vec3 vertices[18] = {

                glm::vec3(0.0f, 1.0f, 0.0f),
                glm::vec3(1.0f, -1.0f, -1.0f),
                glm::vec3(-1.0f, -1.0f, -1.0f),
                glm::vec3(0.0f, 1.0f, 0.0f),
                glm::vec3(1.0f, -1.0f, -1.0f),
                glm::vec3(-1.0f, -1.0f, -1.0f),


@@ -322,12 +437,19 @@ void init() {
 
                glm::vec3(0.0f, 1.0f, 0.0f),
                glm::vec3(1.0f, -1.0f, 1.0f),
 
                glm::vec3(0.0f, 1.0f, 0.0f),
                glm::vec3(1.0f, -1.0f, 1.0f),

-               glm::vec3(1.0f, -1.0f, -1.0f)
+               glm::vec3(1.0f, -1.0f, -1.0f),
+
+               glm::vec3(1, -1, 1),
+               glm::vec3(-1, -1, 1),
+               glm::vec3(-1, -1, -1),
+               glm::vec3(-1, -1, -1),
+               glm::vec3(1, -1, -1),
+               glm::vec3(1, -1, 1)

        };
 
        // work out the normals
        };
 
        // work out the normals

-       glm::vec3 normals[12];
-       for (int i = 0; i < 4; i++) {
+       glm::vec3 normals[18];
+       for (int i = 0; i < 6; i++) {

                glm::vec3 a = vertices[i * 3];
                glm::vec3 b = vertices[i * 3 + 1];
                glm::vec3 c = vertices[i * 3 + 2];
                glm::vec3 a = vertices[i * 3];
                glm::vec3 b = vertices[i * 3 + 1];
                glm::vec3 c = vertices[i * 3 + 2];


@@ -335,20 +457,36 @@ void init() {
                glm::vec3 v = glm::normalize(b - c);
                glm::vec3 norm = glm::normalize(glm::cross(v, u));
                for(int j = 0; j < 3; j++) {
                glm::vec3 v = glm::normalize(b - c);
                glm::vec3 norm = glm::normalize(glm::cross(v, u));
                for(int j = 0; j < 3; j++) {

-                       normals[i * 3 + j] = glm::vec3(norm);
+                       normals[i * 3 + j] = -glm::vec3(norm);

                }
        }
 
                }
        }
 

-       gradientProgId = compileShaders((char*)"vertex.glsl", (char*)"fragment.glsl");
+       gradientProgId = compileShaders((char*)"vertex.glsl", (char*)"gradientfrag.glsl");

        glUseProgram(gradientProgId);
        pyramidVao = setupBuffers(vertices, normals, gradientProgId);
        validateProgram(gradientProgId);
 
        glUseProgram(gradientProgId);
        pyramidVao = setupBuffers(vertices, normals, gradientProgId);
        validateProgram(gradientProgId);
 

-       solidProgId = compileShaders((char*)"solidvertex.glsl", (char*)"solidfrag.glsl");
+       plainProgId = compileShaders((char*)"plainvertex.glsl", (char*)"plainfrag.glsl");
+       glUseProgram(plainProgId);
+       setupLightBuffers(plainProgId);
+       validateProgram(plainProgId);
+
+       normalProgId = compileShaders((char*)"vertex.glsl", (char*)"normalfrag.glsl");
+       glUseProgram(normalProgId);
+       setupTeapotBuffers(normalProgId);
+       validateProgram(normalProgId);
+
+       solidProgId = compileShaders((char*)"vertex.glsl", (char*)"solidfrag.glsl");

        glUseProgram(solidProgId);
        glUseProgram(solidProgId);

-       setupLightBuffers(solidProgId);

        validateProgram(solidProgId);
 
        validateProgram(solidProgId);
 

+       textureProgId = compileShaders((char*)"texturevertex.glsl", (char*)"texturefrag.glsl");
+       glUseProgram(textureProgId);
+       validateProgram(textureProgId);
+
+       monkeyHead = new Model("monkeyhead_smooth.dae", solidProgId);
+       chest = new Model("models/chest.dae", textureProgId);
+

        glEnable(GL_DEPTH_TEST); 
        glEnable(GL_CULL_FACE); 
 }
        glEnable(GL_DEPTH_TEST); 
        glEnable(GL_CULL_FACE); 
 }


@@ -384,6 +522,13 @@ void timer(int _) {
        if (keyStates['e'])
                ySpeed = -0.1f;
 
        if (keyStates['e'])
                ySpeed = -0.1f;
 

+       if (keyStates['j']) lightPos.z += 0.1f;
+       if (keyStates['k']) lightPos.z -= 0.1f;
+       if (keyStates['h']) lightPos.x -= 0.1f;
+       if (keyStates['l']) lightPos.x += 0.1f;
+       if (keyStates['m']) lightPos.y -= 0.1f;
+       if (keyStates['n']) lightPos.y += 0.1f;
+

        camPos.x += xSpeed * sin(yaw) + zSpeed * cos(yaw);
        camPos.y += ySpeed;
        camPos.z += zSpeed * sin(yaw) - xSpeed * cos(yaw);
        camPos.x += xSpeed * sin(yaw) + zSpeed * cos(yaw);
        camPos.y += ySpeed;
        camPos.z += zSpeed * sin(yaw) - xSpeed * cos(yaw);


@@ -414,6 +559,12 @@ void motion(int x, int y) {
        front.y = sin(pitch);
        front.z = cos(pitch) * sin(yaw);
        camFront = glm::normalize(front);
        front.y = sin(pitch);
        front.z = cos(pitch) * sin(yaw);
        camFront = glm::normalize(front);

+
+       if (pitch < -1.57079632679 || pitch >= 1.57079632679) {
+               camUp = glm::vec3(0, -1, 0);
+       } else {
+               camUp = glm::vec3(0, 1, 0);
+       }

 }
 
 void mouse(int button, int state, int x, int y) {
 }
 
 void mouse(int button, int state, int x, int y) {


@@ -424,7 +575,7 @@ void mouse(int button, int state, int x, int y) {
 int main(int argc, char** argv) {
        glutInit(&argc, argv);
        glutInitDisplayMode(GLUT_DEPTH|GLUT_DOUBLE|GLUT_RGB|GLUT_3_2_CORE_PROFILE);
 int main(int argc, char** argv) {
        glutInit(&argc, argv);
        glutInitDisplayMode(GLUT_DEPTH|GLUT_DOUBLE|GLUT_RGB|GLUT_3_2_CORE_PROFILE);

-       glutInitWindowSize(800, 600);
+       glutInitWindowSize(WIDTH, HEIGHT);

        int win = glutCreateWindow("Hello Triangle");
        glutDisplayFunc(display);
 
        int win = glutCreateWindow("Hello Triangle");
        glutDisplayFunc(display);