Added basic example

This commit is contained in:
Robert 2021-01-30 01:43:36 +01:00
parent a2a11df85e
commit 707687b682
5 changed files with 198 additions and 1 deletions

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@ -0,0 +1,34 @@
add_executable(model
"main.cpp"
)
find_package(glfw3 REQUIRED)
target_include_directories(model PRIVATE
glfw
)
target_link_libraries(model PRIVATE
glfw
)
if(WIN32)
target_link_libraries(model PRIVATE
"$<TARGET_FILE_DIR:openglu>/$<TARGET_FILE_BASE_NAME:openglu>.lib"
)
else()
target_link_libraries(model PRIVATE
$<TARGET_FILE:openglu>
)
endif()
add_custom_command(TARGET model POST_BUILD
COMMAND ${CMAKE_COMMAND} -E copy_directory ${CMAKE_CURRENT_SOURCE_DIR}/shaders $<TARGET_FILE_DIR:model>/shaders
COMMAND ${CMAKE_COMMAND} -E copy_directory ${CMAKE_CURRENT_SOURCE_DIR}/assets $<TARGET_FILE_DIR:model>/assets
)
if(WIN32)
add_custom_command(TARGET model POST_BUILD
COMMAND ${CMAKE_COMMAND} -E copy $<TARGET_FILE:openglu> $<TARGET_FILE:glfw> $<TARGET_FILE_DIR:model>
)
endif()

149
examples/model/main.cpp Normal file
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#include <iostream>
#include <vector>
#include "openglu.hpp"
#include <GLFW/glfw3.h>
#include <glm/gtc/type_ptr.hpp>
#include <glm/gtx/string_cast.hpp>
#include "imgui/imgui_impl_glfw.h"
#include "imgui/imgui_impl_opengl3.h"
bool firstMouse = true;
bool escaped = false;
double lastX = 0.0f;
double lastY = 0.0f;
oglu::Camera camera(45.0f, 16.f / 9.f, 0.01f, 100.0f);
void framebuffer_size_callback(GLFWwindow* window, int width, int height)
{
oglu::SetViewport(0, 0, width, height);
camera.aspectRatio = ((float)width / (float)height);
}
void mouse_callback(GLFWwindow* window, double xpos, double ypos)
{
if (escaped)
return;
if (firstMouse)
{
lastX = xpos;
lastY = ypos;
firstMouse = false;
}
float xoffset = (float)xpos - (float)lastX;
float yoffset = (float)lastY - (float)ypos;
lastX = xpos;
lastY = ypos;
float sensitivity = 0.1f;
xoffset *= sensitivity;
yoffset *= sensitivity;
camera.Pan(-xoffset);
camera.Tilt(yoffset);
}
void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods)
{
if (key == GLFW_KEY_ESCAPE && action == GLFW_RELEASE)
{
escaped = !escaped;
firstMouse = true;
glfwSetInputMode(window, GLFW_CURSOR, escaped ? GLFW_CURSOR_NORMAL : GLFW_CURSOR_DISABLED);
}
}
void processInput(GLFWwindow* window)
{
if (glfwGetKey(window, GLFW_KEY_W) == GLFW_PRESS)
camera.Forward(0.1f);
if (glfwGetKey(window, GLFW_KEY_A) == GLFW_PRESS)
camera.Sideways(-0.1f);
if (glfwGetKey(window, GLFW_KEY_S) == GLFW_PRESS)
camera.Forward(-0.1f);
if (glfwGetKey(window, GLFW_KEY_D) == GLFW_PRESS)
camera.Sideways(0.1f);
if (glfwGetKey(window, GLFW_KEY_SPACE) == GLFW_PRESS)
camera.Move(0.0f, 0.1f, 0.0f);
if (glfwGetKey(window, GLFW_KEY_LEFT_SHIFT) == GLFW_PRESS)
camera.Move(0.0f, -0.1f, 0.0f);
}
int main(int argc, char** argv)
{
// Setup GLFW
glfwInit();
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 4);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 6);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
const GLFWvidmode* screen = glfwGetVideoMode(glfwGetPrimaryMonitor());
int windowHeight = screen->height / 5 * 4;
int windowWidth = (int)(16.f / 9.f * windowHeight);
// Create Window
GLFWwindow* window = glfwCreateWindow(windowWidth, windowHeight, "First Person Movement Test", NULL, NULL);
if (window == nullptr)
{
std::cerr << "Failed to create GLFW window" << std::endl;
glfwTerminate();
return -1;
}
glfwMakeContextCurrent(window);
glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);
glfwSetCursorPosCallback(window, mouse_callback);
glfwSetKeyCallback(window, key_callback);
// glad stuff
oglu::LoadGLLoader((GLADloadproc)glfwGetProcAddress);
oglu::SetViewport(0, 0, windowWidth, windowHeight);
// Create a shader
oglu::Shader shader;
try
{
shader = oglu::MakeShader("shaders/vertexShader.vert", "shaders/fragmentShader.frag");
}
catch (const std::runtime_error& e)
{
std::cerr << e.what() << std::endl;
return -1;
}
camera.Move(0.0f, 0.0f, 5.0f);
// Window loop
oglu::Enable(GL_DEPTH_TEST);
glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
oglu::Color bgColor = oglu::Color::Black;
lightSource.SetPosition(1.0f, 1.0f, -1.0f);
while (!glfwWindowShouldClose(window))
{
processInput(window);
oglu::ClearScreen(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT, bgColor);
shader->Use();
shader->SetUniformMatrix4fv("view", 1, GL_FALSE, glm::value_ptr(camera.GetMatrix()));
shader->SetUniformMatrix4fv("projection", 1, GL_FALSE, glm::value_ptr(camera.GetProjection()));
glfwSwapBuffers(window);
glfwPollEvents();
}
glfwTerminate();
return 0;
}

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#version 330 core
vec4 out FragColor;
void main()
{
FragColor = vec4(0.0);
}

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#version 330 core
void main()
{
gl_Position = vec4(0.0);
}

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@ -395,4 +395,4 @@ int main(int argc, char** argv)
glfwTerminate();
return 0;
}
}