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feat: fix aspect ratio

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Cat Flynn 2023-08-03 10:27:07 +02:00 committed by ktyl
parent 85e0bf3d6c
commit c6a4cfa418
1 changed files with 6 additions and 3 deletions
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9
src/hello.cpp
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@ -49,6 +49,10 @@
#include <cmath> #include <cmath>
#include "astro/twoBodyMethods.hpp" #include "astro/twoBodyMethods.hpp"
const int WIDTH = 640;
const int HEIGHT = 480;
const float ASPECT = (float)WIDTH / (float)HEIGHT;
// Initialize GLFW, OpenGL and GLEW, open a window and make it the current context. // Initialize GLFW, OpenGL and GLEW, open a window and make it the current context.
// Returns 0 for success, and -1 for any failure. // Returns 0 for success, and -1 for any failure.
// Failures are printed to STDERR. // Failures are printed to STDERR.
@ -64,7 +68,7 @@ int initGraphics(GLFWwindow** window)
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3); glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE); glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
*window = glfwCreateWindow(640, 480, "Hello Astro", NULL, NULL); *window = glfwCreateWindow(WIDTH, HEIGHT, "Hello Astro", NULL, NULL);
if (!window) if (!window)
{ {
glfwTerminate(); glfwTerminate();
@ -98,8 +102,7 @@ GLint getShaderUniformLocation(GLuint shaderProgram, const std::string& uniformN
void updateProjectionMatrix(GLuint shaderProgram) void updateProjectionMatrix(GLuint shaderProgram)
{ {
// Calculate matrices float left = -ASPECT, right = ASPECT, bottom = -1.0, top = 1.0, near = -1.0, far = 1.0;
float left = -1.0, right = 1.0, bottom = -1.0, top = 1.0, near = -1.0, far = 1.0;
glm::mat4 projection = glm::ortho(left, right, bottom, top, near, far); glm::mat4 projection = glm::ortho(left, right, bottom, top, near, far);
GLint projectionLocation = getShaderUniformLocation(shaderProgram, "_Projection"); GLint projectionLocation = getShaderUniformLocation(shaderProgram, "_Projection");
glUniformMatrix4fv(projectionLocation, 1, GL_FALSE, &projection[0][0]); glUniformMatrix4fv(projectionLocation, 1, GL_FALSE, &projection[0][0]);