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/*
Copyright 2012-2019 David Robillard <http://drobilla.net>
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/**
@file pugl_test.c A simple Pugl test that creates a top-level window.
*/
#define GL_SILENCE_DEPRECATION 1
#include "test_utils.h"
#include "pugl/gl.h"
#include "pugl/pugl.h"
#include "pugl/pugl_gl_backend.h"
#include <locale.h>
#include <math.h>
#include <stdbool.h>
#include <stdio.h>
#include <string.h>
static bool continuous = false;
static int quit = 0;
static float xAngle = 0.0f;
static float yAngle = 0.0f;
static float dist = 10.0f;
static double lastMouseX = 0.0;
static double lastMouseY = 0.0;
static float lastDrawTime = 0.0;
static unsigned framesDrawn = 0;
static bool mouseEntered = false;
static void
onReshape(PuglView* view, int width, int height)
{
(void)view;
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glViewport(0, 0, width, height);
float projection[16];
perspective(projection, 1.8f, width / (float)height, 1.0, 100.0f);
glLoadMatrixf(projection);
}
static void
onDisplay(PuglView* view)
{
const float thisTime = (float)puglGetTime(view);
if (continuous) {
xAngle = fmodf(xAngle + (thisTime - lastDrawTime) * 100.0f, 360.0f);
yAngle = fmodf(yAngle + (thisTime - lastDrawTime) * 100.0f, 360.0f);
}
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glTranslatef(0.0f, 0.0f, dist * -1);
glRotatef(xAngle, 0.0f, 1.0f, 0.0f);
glRotatef(yAngle, 1.0f, 0.0f, 0.0f);
const float bg = mouseEntered ? 0.2f : 0.0f;
glClearColor(bg, bg, bg, 1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_COLOR_ARRAY);
glVertexPointer(3, GL_FLOAT, 0, cubeVertices);
glColorPointer(3, GL_FLOAT, 0, cubeVertices);
glDrawArrays(GL_TRIANGLES, 0, 12 * 3);
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_COLOR_ARRAY);
lastDrawTime = thisTime;
++framesDrawn;
}
static void
onEvent(PuglView* view, const PuglEvent* event)
{
printEvent(event, "Event: ");
switch (event->type) {
case PUGL_CONFIGURE:
onReshape(view, (int)event->configure.width, (int)event->configure.height);
break;
case PUGL_EXPOSE:
onDisplay(view);
break;
case PUGL_CLOSE:
quit = 1;
break;
case PUGL_KEY_PRESS:
if (event->key.key == 'q' || event->key.key == PUGL_KEY_ESCAPE) {
quit = 1;
}
break;
case PUGL_MOTION_NOTIFY:
xAngle = fmodf(xAngle - (float)(event->motion.x - lastMouseX), 360.0f);
yAngle = fmodf(yAngle + (float)(event->motion.y - lastMouseY), 360.0f);
lastMouseX = event->motion.x;
lastMouseY = event->motion.y;
puglPostRedisplay(view);
break;
case PUGL_SCROLL:
dist += (float)event->scroll.dy;
if (dist < 10.0f) {
dist = 10.0f;
}
puglPostRedisplay(view);
break;
case PUGL_ENTER_NOTIFY:
mouseEntered = true;
break;
case PUGL_LEAVE_NOTIFY:
mouseEntered = false;
break;
default:
break;
}
}
int
main(int argc, char** argv)
{
int samples = 0;
int doubleBuffer = PUGL_FALSE;
bool ignoreKeyRepeat = false;
bool resizable = false;
for (int i = 1; i < argc; ++i) {
if (!strcmp(argv[i], "-a")) {
samples = 4;
} else if (!strcmp(argv[i], "-c")) {
continuous = true;
} else if (!strcmp(argv[i], "-d")) {
doubleBuffer = PUGL_TRUE;
} else if (!strcmp(argv[i], "-h")) {
printf("USAGE: %s [OPTIONS]...\n\n"
" -a Enable anti-aliasing\n"
" -c Continuously animate and draw\n"
" -d Enable double-buffering\n"
" -h Display this help\n"
" -i Ignore key repeat\n"
" -r Resizable window\n", argv[0]);
return 0;
} else if (!strcmp(argv[i], "-i")) {
ignoreKeyRepeat = true;
} else if (!strcmp(argv[i], "-r")) {
resizable = true;
} else {
fprintf(stderr, "Unknown option: %s\n", argv[i]);
}
}
setlocale(LC_CTYPE, "");
PuglView* view = puglInit(NULL, NULL);
puglInitWindowClass(view, "PuglTest");
puglInitWindowSize(view, 512, 512);
puglInitWindowMinSize(view, 256, 256);
puglInitWindowAspectRatio(view, 1, 1, 16, 9);
puglInitBackend(view, puglGlBackend());
puglInitWindowHint(view, PUGL_RESIZABLE, resizable);
puglInitWindowHint(view, PUGL_SAMPLES, samples);
puglInitWindowHint(view, PUGL_DOUBLE_BUFFER, doubleBuffer);
puglIgnoreKeyRepeat(view, ignoreKeyRepeat);
puglSetEventFunc(view, onEvent);
if (puglCreateWindow(view, "Pugl Test")) {
return 1;
}
puglEnterContext(view, false);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LESS);
glClearColor(0.2f, 0.2f, 0.2f, 1.0f);
puglLeaveContext(view, false);
puglShowWindow(view);
float lastReportTime = (float)puglGetTime(view);
bool requestedAttention = false;
while (!quit) {
const float thisTime = (float)puglGetTime(view);
if (continuous) {
puglPostRedisplay(view);
} else {
puglWaitForEvent(view);
}
puglProcessEvents(view);
if (!requestedAttention && thisTime > 5) {
puglRequestAttention(view);
requestedAttention = true;
}
if (continuous && thisTime > lastReportTime + 5) {
const double fps = framesDrawn / (thisTime - lastReportTime);
fprintf(stderr,
"%u frames in %.0f seconds = %.3f FPS\n",
framesDrawn, thisTime - lastReportTime, fps);
lastReportTime = thisTime;
framesDrawn = 0;
}
}
puglDestroy(view);
return 0;
}
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