mirror of
https://github.com/gwm17/glfw.git
synced 2024-11-23 18:58:52 -05:00
101 lines
2.9 KiB
C
101 lines
2.9 KiB
C
//========================================================================
|
|
// Mouse cursor accuracy test
|
|
// Copyright (c) Camilla Berglund <elmindreda@elmindreda.org>
|
|
//
|
|
// This software is provided 'as-is', without any express or implied
|
|
// warranty. In no event will the authors be held liable for any damages
|
|
// arising from the use of this software.
|
|
//
|
|
// Permission is granted to anyone to use this software for any purpose,
|
|
// including commercial applications, and to alter it and redistribute it
|
|
// freely, subject to the following restrictions:
|
|
//
|
|
// 1. The origin of this software must not be misrepresented; you must not
|
|
// claim that you wrote the original software. If you use this software
|
|
// in a product, an acknowledgment in the product documentation would
|
|
// be appreciated but is not required.
|
|
//
|
|
// 2. Altered source versions must be plainly marked as such, and must not
|
|
// be misrepresented as being the original software.
|
|
//
|
|
// 3. This notice may not be removed or altered from any source
|
|
// distribution.
|
|
//
|
|
//========================================================================
|
|
//
|
|
// This test came about as the result of bug #1867804
|
|
//
|
|
// No sign of said bug has so far been detected
|
|
//
|
|
//========================================================================
|
|
|
|
#define GLFW_INCLUDE_GLU
|
|
#include <GL/glfw3.h>
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
static int cursor_x = 0, cursor_y = 0;
|
|
static int window_width = 640, window_height = 480;
|
|
|
|
static void window_size_callback(GLFWwindow window, int width, int height)
|
|
{
|
|
window_width = width;
|
|
window_height = height;
|
|
|
|
glViewport(0, 0, window_width, window_height);
|
|
|
|
glMatrixMode(GL_PROJECTION);
|
|
glLoadIdentity();
|
|
gluOrtho2D(0.f, window_width, 0.f, window_height);
|
|
}
|
|
|
|
static void cursor_position_callback(GLFWwindow window, int x, int y)
|
|
{
|
|
cursor_x = x;
|
|
cursor_y = y;
|
|
}
|
|
|
|
int main(void)
|
|
{
|
|
GLFWwindow window;
|
|
|
|
if (!glfwInit())
|
|
{
|
|
fprintf(stderr, "Failed to initialize GLFW: %s\n", glfwErrorString(glfwGetError()));
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
window = glfwOpenWindow(window_width, window_height, GLFW_WINDOWED, "Cursor Inaccuracy Detector", NULL);
|
|
if (!window)
|
|
{
|
|
glfwTerminate();
|
|
|
|
fprintf(stderr, "Failed to open GLFW window: %s\n", glfwErrorString(glfwGetError()));
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
glfwSetCursorPosCallback(cursor_position_callback);
|
|
glfwSetWindowSizeCallback(window_size_callback);
|
|
glfwSwapInterval(1);
|
|
|
|
while (glfwIsWindow(window))
|
|
{
|
|
glClear(GL_COLOR_BUFFER_BIT);
|
|
|
|
glBegin(GL_LINES);
|
|
glVertex2f(0.f, (GLfloat) window_height - cursor_y);
|
|
glVertex2f((GLfloat) window_width, (GLfloat) window_height - cursor_y);
|
|
glVertex2f((GLfloat) cursor_x, 0.f);
|
|
glVertex2f((GLfloat) cursor_x, (GLfloat) window_height);
|
|
glEnd();
|
|
|
|
glfwSwapBuffers();
|
|
glfwPollEvents();
|
|
}
|
|
|
|
glfwTerminate();
|
|
exit(EXIT_SUCCESS);
|
|
}
|
|
|