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cg1-projekt
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new branch for mult obj testing

This commit is contained in:
JonasJan2 2024-05-27 10:05:38 +02:00
parent 588eb327c9
commit 2e460aef60
1 changed files with 87 additions and 75 deletions
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162
src/main.c
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@ -19,7 +19,8 @@
#include <stdbool.h> #include <stdbool.h>
GLuint program; GLuint program;
GLuint vao; GLuint vao[2];
int numObj = 0;
#define NUM_TEXTURES 5 #define NUM_TEXTURES 5
@ -40,7 +41,7 @@ char* textureFiles[NUM_TEXTURES] = {
"../texture/earth/normal.png" "../texture/earth/normal.png"
}; };
int numFaces = 0; int numFaces[2] = {0, 0};
bool exitRequested = false; bool exitRequested = false;
@ -58,8 +59,8 @@ const GLfloat pi = 3.14159f;
vec3 cameraPosition = {0.0f, 3.0f, 5.5f}; vec3 cameraPosition = {0.0f, 3.0f, 5.5f};
char* defaultModel = "../obj/monkey.obj"; char* defaultModel = "../obj/plane.obj";
char* model; char* model = "../obj/earth.obj";
// input handler for camera movement // input handler for camera movement
void handleInputs(double deltaTime) { void handleInputs(double deltaTime) {
@ -120,6 +121,77 @@ void loadTexture(char* textureFile, GLuint* texture) {
stbi_image_free(image); stbi_image_free(image);
} }
void load_object(ParsedObjFile* object) {
// write faces to buffer
GLuint triangleVertexBufferObject;
glGenBuffers(1, &triangleVertexBufferObject);
glBindBuffer(GL_ARRAY_BUFFER, triangleVertexBufferObject);
glBufferData(GL_ARRAY_BUFFER, object->length * sizeof(face), object->faces, GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
stbi_set_flip_vertically_on_load(flipFlag);
// -------------- READ TEXTURE FILES
for (int i = 0; i < NUM_TEXTURES; i++) {
loadTexture(textureFiles[i], &textures[i]);
}
// create vertex array object
glGenVertexArrays(1, &vao[numObj]);
glBindVertexArray(vao[numObj]);
glBindBuffer(GL_ARRAY_BUFFER, triangleVertexBufferObject);
// vertex positions
glVertexAttribPointer(
0,
3,
GL_FLOAT,
GL_FALSE,
sizeof(vertex),
0
);
glEnableVertexAttribArray(0);
// vertex normals
glVertexAttribPointer(
1,
3,
GL_FLOAT,
GL_FALSE,
sizeof(vertex),
(void*) offsetof(vertex, normal)
);
glEnableVertexAttribArray(1);
// vertex texture coordinates
glVertexAttribPointer(
2,
2,
GL_FLOAT,
GL_FALSE,
sizeof(vertex),
(void*) offsetof(vertex, texture)
);
glEnableVertexAttribArray(2);
// face tangents
glVertexAttribPointer(
3,
3,
GL_FLOAT,
GL_FALSE,
sizeof(vertex),
(void*) offsetof(vertex, tangent)
);
glEnableVertexAttribArray(3);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindVertexArray(0);
numObj++; //Erst hier inkrementieren, weil Index sonst nicht klappt
}
void init(void) { void init(void) {
// create and compile vertex shader // create and compile vertex shader
const GLchar *vertexTextConst = vertexShader_glsl; const GLchar *vertexTextConst = vertexShader_glsl;
@ -192,76 +264,13 @@ void init(void) {
// --------------- READ MODEL FILE // --------------- READ MODEL FILE
ParsedObjFile teapot = readObjFile(model); ParsedObjFile object = readObjFile(model);
numFaces = teapot.length; ParsedObjFile object1 = readObjFile(defaultModel);
numFaces[0] = object.length;
// write faces to buffer numFaces[1] = object1.length;
GLuint triangleVertexBufferObject;
glGenBuffers(1, &triangleVertexBufferObject);
glBindBuffer(GL_ARRAY_BUFFER, triangleVertexBufferObject);
glBufferData(GL_ARRAY_BUFFER, teapot.length * sizeof(face), teapot.faces, GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
stbi_set_flip_vertically_on_load(flipFlag);
// -------------- READ TEXTURE FILES
for (int i = 0; i < NUM_TEXTURES; i++) {
loadTexture(textureFiles[i], &textures[i]);
}
// create vertex array object
glGenVertexArrays(1, &vao);
glBindVertexArray(vao);
glBindBuffer(GL_ARRAY_BUFFER, triangleVertexBufferObject);
// vertex positions
glVertexAttribPointer(
0,
3,
GL_FLOAT,
GL_FALSE,
sizeof(vertex),
0
);
glEnableVertexAttribArray(0);
// vertex normals
glVertexAttribPointer(
1,
3,
GL_FLOAT,
GL_FALSE,
sizeof(vertex),
(void*) offsetof(vertex, normal)
);
glEnableVertexAttribArray(1);
// vertex texture coordinates
glVertexAttribPointer(
2,
2,
GL_FLOAT,
GL_FALSE,
sizeof(vertex),
(void*) offsetof(vertex, texture)
);
glEnableVertexAttribArray(2);
// face tangents
glVertexAttribPointer(
3,
3,
GL_FLOAT,
GL_FALSE,
sizeof(vertex),
(void*) offsetof(vertex, tangent)
);
glEnableVertexAttribArray(3);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindVertexArray(0);
load_object(&object1);
load_object(&object);
// ENABLE BACKFACE CULLING // ENABLE BACKFACE CULLING
glFrontFace(GL_CCW); glFrontFace(GL_CCW);
@ -298,7 +307,7 @@ void draw(void) {
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glUseProgram(program); glUseProgram(program);
glBindVertexArray(vao);
// step for rotations // step for rotations
// counts up to 1.0 and then resets back to 0.0 forever // counts up to 1.0 and then resets back to 0.0 forever
@ -407,7 +416,10 @@ void draw(void) {
// draw!!1 // draw!!1
glDrawArrays(GL_TRIANGLES, 0, numFaces * 3); glBindVertexArray(vao[0]);
glDrawArrays(GL_TRIANGLES, 0, numFaces[0] * 3);
glBindVertexArray(vao[1]);
glDrawArrays(GL_TRIANGLES, 0, numFaces[1] * 3);
} }
// change viewport size and adjust aspect ratio when changing window size // change viewport size and adjust aspect ratio when changing window size