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+/*
+ Copyright 2012-2016 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.
+*/
+
+#include "pugl/gl.h"
+#include "pugl/pugl.h"
+
+#include <locale.h>
+#include <math.h>
+#include <stdio.h>
+#include <string.h>
+
+static int quit = 0;
+static float xAngle = 0.0f;
+static float yAngle = 0.0f;
+static float dist = 10.0f;
+
+static const float cubeVertices[] = {
+ -1.0f, -1.0f, -1.0f,
+ -1.0f, -1.0f, 1.0f,
+ -1.0f, 1.0f, 1.0f,
+
+ 1.0f, 1.0f, -1.0f,
+ -1.0f, -1.0f, -1.0f,
+ -1.0f, 1.0f, -1.0f,
+
+ 1.0f, -1.0f, 1.0f,
+ -1.0f, -1.0f, -1.0f,
+ 1.0f, -1.0f, -1.0f,
+
+ 1.0f, 1.0f, -1.0f,
+ 1.0f, -1.0f, -1.0f,
+ -1.0f, -1.0f, -1.0f,
+
+ -1.0f, -1.0f, -1.0f,
+ -1.0f, 1.0f, 1.0f,
+ -1.0f, 1.0f, -1.0f,
+
+ 1.0f, -1.0f, 1.0f,
+ -1.0f, -1.0f, 1.0f,
+ -1.0f, -1.0f, -1.0f,
+
+ -1.0f, 1.0f, 1.0f,
+ -1.0f, -1.0f, 1.0f,
+ 1.0f, -1.0f, 1.0f,
+
+ 1.0f, 1.0f, 1.0f,
+ 1.0f, -1.0f, -1.0f,
+ 1.0f, 1.0f, -1.0f,
+
+ 1.0f, -1.0f, -1.0f,
+ 1.0f, 1.0f, 1.0f,
+ 1.0f, -1.0f, 1.0f,
+
+ 1.0f, 1.0f, 1.0f,
+ 1.0f, 1.0f, -1.0f,
+ -1.0f, 1.0f, -1.0f,
+
+ 1.0f, 1.0f, 1.0f,
+ -1.0f, 1.0f, -1.0f,
+ -1.0f, 1.0f, 1.0f,
+
+ 1.0f, 1.0f, 1.0f,
+ -1.0f, 1.0f, 1.0f,
+ 1.0f, -1.0f, 1.0f
+};
+
+/** Calculate a projection matrix for a given perspective. */
+static void
+perspective(float* m, float fov, float aspect, float zNear, float zFar)
+{
+ const float h = tanf(fov);
+ const float w = h / aspect;
+ const float depth = zNear - zFar;
+ const float q = (zFar + zNear) / depth;
+ const float qn = 2 * zFar * zNear / depth;
+
+ m[0] = w; m[1] = 0; m[2] = 0; m[3] = 0;
+ m[4] = 0; m[5] = h; m[6] = 0; m[7] = 0;
+ m[8] = 0; m[9] = 0; m[10] = q; m[11] = -1;
+ m[12] = 0; m[13] = 0; m[14] = qn; m[15] = 0;
+}
+
+static void
+onReshape(PuglView* view, int width, int height)
+{
+ 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)
+{
+ 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);
+
+ 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);
+}
+
+static void
+printModifiers(PuglView* view, unsigned mods)
+{
+ fprintf(stderr, "Modifiers:%s%s%s%s\n",
+ (mods & PUGL_MOD_SHIFT) ? " Shift" : "",
+ (mods & PUGL_MOD_CTRL) ? " Ctrl" : "",
+ (mods & PUGL_MOD_ALT) ? " Alt" : "",
+ (mods & PUGL_MOD_SUPER) ? " Super" : "");
+}
+
+static void
+onEvent(PuglView* view, const PuglEvent* event)
+{
+ switch (event->type) {
+ case PUGL_NOTHING:
+ break;
+ 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:
+ fprintf(stderr, "Key %u (char U+%04X special U+%04X) press (%s)%s\n",
+ event->key.keycode, event->key.character, event->key.special,
+ event->key.utf8, event->key.filter ? " (filtered)" : "");
+ if (event->key.character == 'q' ||
+ event->key.character == 'Q' ||
+ event->key.character == PUGL_CHAR_ESCAPE) {
+ quit = 1;
+ }
+ break;
+ case PUGL_KEY_RELEASE:
+ fprintf(stderr, "Key %u (char U+%04X special U+%04X) release (%s)%s\n",
+ event->key.keycode, event->key.character, event->key.special,
+ event->key.utf8, event->key.filter ? " (filtered)" : "");
+ break;
+ case PUGL_MOTION_NOTIFY:
+ xAngle = -(int)event->motion.x % 360;
+ yAngle = (int)event->motion.y % 360;
+ puglPostRedisplay(view);
+ break;
+ case PUGL_BUTTON_PRESS:
+ case PUGL_BUTTON_RELEASE:
+ fprintf(stderr, "Mouse %d %s at %f,%f ",
+ event->button.button,
+ (event->type == PUGL_BUTTON_PRESS) ? "down" : "up",
+ event->button.x,
+ event->button.y);
+ printModifiers(view, event->scroll.state);
+ break;
+ case PUGL_SCROLL:
+ fprintf(stderr, "Scroll %f %f %f %f ",
+ event->scroll.x, event->scroll.y, event->scroll.dx, event->scroll.dy);
+ printModifiers(view, event->scroll.state);
+ dist += event->scroll.dy;
+ if (dist < 10.0f) {
+ dist = 10.0f;
+ }
+ puglPostRedisplay(view);
+ break;
+ case PUGL_ENTER_NOTIFY:
+ fprintf(stderr, "Entered\n");
+ break;
+ case PUGL_LEAVE_NOTIFY:
+ fprintf(stderr, "Exited\n");
+ break;
+ case PUGL_FOCUS_IN:
+ fprintf(stderr, "Focus in\n");
+ break;
+ case PUGL_FOCUS_OUT:
+ fprintf(stderr, "Focus out\n");
+ break;
+ }
+}
+
+int
+main(int argc, char** argv)
+{
+ bool ignoreKeyRepeat = false;
+ bool resizable = false;
+ for (int i = 1; i < argc; ++i) {
+ if (!strcmp(argv[i], "-h")) {
+ printf("USAGE: %s [OPTIONS]...\n\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);
+ puglInitResizable(view, resizable);
+
+ puglIgnoreKeyRepeat(view, ignoreKeyRepeat);
+ puglSetEventFunc(view, onEvent);
+
+ if (puglCreateWindow(view, "Pugl Test")) {
+ return 1;
+ }
+
+ puglEnterContext(view);
+ glEnable(GL_DEPTH_TEST);
+ glDepthFunc(GL_LESS);
+ glClearColor(0.2f, 0.2f, 0.2f, 1.0f);
+ puglLeaveContext(view, false);
+
+ puglShowWindow(view);
+
+ while (!quit) {
+ puglWaitForEvent(view);
+ puglProcessEvents(view);
+ }
+
+ puglDestroy(view);
+ return 0;
+}
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