HW02. 3D-Object. Gromov Pavel

.gitignore

@@ -30,3 +30,8 @@
 *.exe
 *.out
 *.app
+
+# Custom
+.idea/*
+build/*
+bindings/*

CMakeLists.txt

@@ -0,0 +1,59 @@
+cmake_minimum_required(VERSION 3.0)
+project(Task-2-3Dobject CXX)
+
+set(CMAKE_PREFIX_PATH ${CMAKE_BINARY_DIR})
+set(CMAKE_MODULE_PATH ${CMAKE_BINARY_DIR})
+set(CMAKE_CXX_STANDARD 17)
+
+# CONFIG option is important so that CMake doesnt search for modules into the default modules directory
+find_package(imgui CONFIG)
+find_package(glfw CONFIG)
+find_package(glew CONFIG)
+find_package(fmt CONFIG)
+find_package(glm CONFIG)
+find_package(stb CONFIG)
+find_package(assimp CONFIG)
+
+add_executable(
+        Task-2-3Dobject
+
+        src/main.cpp
+        src/initials.h
+        src/buffers.h
+
+        src/utils/shader.cpp
+        src/utils/camera.h
+        src/utils/model.h
+        src/utils/mesh.h
+
+        bindings/imgui_impl_glfw.cpp
+        bindings/imgui_impl_opengl3.cpp
+
+        assets/skybox/skybox.vs
+        assets/skybox/skybox.fs
+        assets/nanosuit/nanosuit.vs
+        assets/nanosuit/nanosuit.fs
+)
+
+add_custom_command(
+        TARGET Task-2-3Dobject
+        POST_BUILD
+        COMMAND ${CMAKE_COMMAND} -E copy_directory ${PROJECT_SOURCE_DIR}/assets ${PROJECT_BINARY_DIR}/assets
+)
+
+target_compile_definitions(
+        Task-2-3Dobject
+        PUBLIC
+        IMGUI_IMPL_OPENGL_LOADER_GLEW
+)
+
+target_link_libraries(
+        Task-2-3Dobject
+        imgui::imgui
+        GLEW::glew_s
+        glfw::glfw
+        fmt::fmt
+        glm::glm
+        stb::stb
+        assimp::assimp
+)

README.md

@@ -1 +1,27 @@
-# ComputerGraphics-OpenGL
+# 3D объект
+
+### Условие
+- загрузка и отрисовка 3D модели формата obj с текстурами
+- отражения и преломления environment'а (cubemap/sphere map)
+- навигация камеры воркуг объекта.
+    - в качестве образца берем логику навигации отсюда https://threejs.org/examples/#webgl_geometry_teapot
+    - камера всегда смотрит в центр сцены (условно, lookat=(0, 0, 0))
+    - mouse drag перемещает камеру по сфере с центром в lookat
+    - mouse zoom - приближает/отдаляет камеру (меняет радиус сферы)
+
+## Запуск 
+Собираем проект:
+1) Windows `build.bat` 
+2) Linux `build.sh`
+
+Далее запускаем `build/Task-2-3Dobject`
+
+## Примеры
+- *With Fresnel coefficient*
+![](screenshots/nanosuit_2.gif)
+
+- *Without Fresnel coefficient*
+![](screenshots/nanosuit.gif)
+
+- *Without Fresnel coefficient*
+![](screenshots/aircraft.gif)

assets/aircraft/piper_pa18.mtl

@@ -0,0 +1,111 @@
+# Blender MTL File: 'piper_pa18.blend'
+# Material Count: 10
+
+newmtl base
+Ns 96.078431
+Ka 0.300000 0.300000 0.300000
+Kd 0.683972 0.355875 0.000000
+Ks 0.500000 0.500000 0.500000
+Ke 0.000000 0.000000 0.000000
+Ni 1.000000
+d 1.000000
+illum 5
+map_Kd textures/piper_diffuse.jpg
+map_Bump textures/piper_bump.jpg
+
+newmtl base_NONE
+Ns 96.078431
+Ka 0.300000 0.300000 0.300000
+Kd 0.683972 0.355875 0.000000
+Ks 0.500000 0.500000 0.500000
+Ke 0.000000 0.000000 0.000000
+Ni 1.000000
+d 1.000000
+illum 5
+map_Bump textures/piper_bump.jpg
+map_Kd textures/piper_diffuse.jpg
+
+newmtl glass
+Ns 96.078431
+Ka 0.080000 0.080000 0.080000
+Kd 0.683972 0.683972 0.683972
+Ks 0.500000 0.500000 0.500000
+Ke 0.000000 0.000000 0.000000
+Ni 1.300000
+d 0.100000
+illum 7
+map_Kd textures/piper_diffuse.jpg
+
+newmtl glass_NONE
+Ns 96.078431
+Ka 0.080000 0.080000 0.080000
+Kd 0.683972 0.683972 0.683972
+Ks 0.500000 0.500000 0.500000
+Ke 0.000000 0.000000 0.000000
+Ni 1.300000
+d 0.100000
+illum 7
+
+newmtl internals_alu
+Ns 96.078431
+Ka 0.500000 0.500000 0.500000
+Kd 0.336015 0.336015 0.336015
+Ks 0.500000 0.500000 0.500000
+Ke 0.000000 0.000000 0.000000
+Ni 1.000000
+d 1.000000
+illum 5
+map_Kd textures/piper_diffuse.jpg
+
+newmtl internals_alu_NONE
+Ns 96.078431
+Ka 0.500000 0.500000 0.500000
+Kd 0.336015 0.336015 0.336015
+Ks 0.500000 0.500000 0.500000
+Ke 0.000000 0.000000 0.000000
+Ni 1.000000
+d 1.000000
+illum 5
+
+newmtl internals_b
+Ns 96.078431
+Ka 0.100000 0.100000 0.100000
+Kd 0.007214 0.007214 0.007214
+Ks 0.500000 0.500000 0.500000
+Ke 0.000000 0.000000 0.000000
+Ni 1.000000
+d 1.000000
+illum 3
+
+newmtl mirror
+Ns 96.078431
+Ka 0.080000 0.080000 0.080000
+Kd 0.560000 0.560000 0.560000
+Ks 0.500000 0.500000 0.500000
+Ke 0.000000 0.000000 0.000000
+Ni 1.000000
+d 0.200000
+illum 5
+
+newmtl prop
+Ns 96.078431
+Ka 0.100000 0.100000 0.100000
+Kd 0.011735 0.011735 0.011735
+Ks 0.500000 0.500000 0.500000
+Ke 0.000000 0.000000 0.000000
+Ni 1.000000
+d 1.000000
+illum 5
+map_Kd textures/piper_diffuse.jpg
+
+newmtl tires
+Ns 96.078431
+Ka 1.000000 1.000000 1.000000
+Kd 0.005754 0.005754 0.005754
+Ks 0.300000 0.300000 0.300000
+Ke 0.000000 0.000000 0.000000
+Ni 1.000000
+d 1.000000
+illum 2
+map_Kd textures/piper_diffuse.jpg
+map_Ks textures/piper_refl.jpg

assets/nanosuit/nanosuit.fs

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+#version 330 core
+
+out vec4 FragColor;
+
+in vec3 normal;
+in vec3 position;
+in vec2 texture_coords;
+
+uniform sampler2D texture_diffuse1;
+uniform sampler2D texture_specular1;
+uniform vec3 camera_pos;
+uniform samplerCube skybox;
+
+uniform float coefficient_texture;
+uniform float coefficient_reflection;
+uniform float coefficient_refraction;
+uniform float fresnel_alpha;
+uniform float frag_color_mix;
+
+void main()
+{
+    // Texture
+    vec4 texel_diffuse = texture2D(texture_diffuse1, texture_coords);
+    vec4 texel_specular = texture2D(texture_specular1, texture_coords);
+    vec4 result_texture = mix(texel_diffuse, texel_specular, coefficient_texture);
+
+    // Reflect, Refract, Fresnel
+    float angle = -dot(normalize(position - camera_pos), normalize(normal));
+    vec3 reflection = reflect(normalize(position - camera_pos), normalize(normal));
+    vec3 refraction = refract(normalize(position - camera_pos), normalize(normal), coefficient_refraction);
+    float coefficient_fresnel = pow(1 - angle, fresnel_alpha) * (1 - coefficient_reflection) + coefficient_reflection;
+
+    vec4 R = mix(
+        vec4(texture(skybox, refraction).rgb, 1.0),
+        vec4(texture(skybox, reflection).rgb, 1.0),
+        coefficient_fresnel
+    );
+
+    FragColor = mix(R, result_texture, frag_color_mix);
+}

assets/nanosuit/nanosuit.vs

@@ -0,0 +1,21 @@
+#version 330 core
+
+layout (location = 0) in vec3 in_pos;
+layout (location = 1) in vec3 in_normal;
+layout (location = 2) in vec2 in_texture_coord;
+
+out vec2 texture_coords;
+out vec3 normal;
+out vec3 position;
+
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 projection;
+
+void main() {
+    texture_coords = in_texture_coord;
+    normal = mat3(transpose(inverse(model))) * in_normal;
+    position = vec3(model * vec4(in_pos, 1.0));
+
+    gl_Position = projection * view * model * vec4(in_pos, 1.0);
+}