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/*************************************************************************
* Copyright (C) 2009 Tavian Barnes <tavianator@gmail.com> *
* *
* This file is part of The Dimension Test Suite. *
* *
* The Dimension Test Suite is free software; you can redistribute it *
* and/or modify it under the terms of the GNU General Public License as *
* published by the Free Software Foundation; either version 3 of the *
* License, or (at your option) any later version. *
* *
* The Dimension Test Suite is distributed in the hope that it will be *
* useful, but WITHOUT ANY WARRANTY; without even the implied warranty *
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
* General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program. If not, see <http://www.gnu.org/licenses/>. *
*************************************************************************/
#include "tests.hpp"
namespace Dimension
{
namespace Tests
{
Scene
default_scene()
{
// Canvas
Canvas canvas(768, 480);
// Camera
Perspective_Camera camera;
camera.trans(
Matrix::rotation(Vector(0.0, 1.0, 0.0))
* Matrix::translation(Vector(0.0, 0.0, -4.0))
* Matrix::scale(
Vector(static_cast<double>(canvas.width())/canvas.height(),
1.0,
1.0)
)
);
// Scene
Scene scene(camera, canvas);
// Objects in scene
Sphere sphere;
sphere.trans(inverse(Matrix::scale(Vector(1.25, 1.25, 1.25))));
scene.objects().push(sphere);
Cube cube;
cube.trans(inverse(Matrix::rotation(Vector(0.75, 0.0, 0.0))));
scene.objects().push(cube);
// Background color
Color background = sRGB(0.0, 0.1, 0.25);
background.filter(0.1);
scene.background(background);
return scene;
}
namespace
{
/* XIfEvent callback */
Bool
WaitForNotify(::Display *d, XEvent *e, char *arg)
{
return (e->type == MapNotify) && (e->xmap.window == (Window)arg);
}
}
Display::Display(const Canvas& canvas)
{
int attributeList[] = {
GLX_RGBA,
GLX_DOUBLEBUFFER,
GLX_RED_SIZE, 1,
GLX_GREEN_SIZE, 1,
GLX_BLUE_SIZE, 1,
None
};
XVisualInfo *vi;
XSetWindowAttributes swa;
/* Get an X connection */
m_dpy = XOpenDisplay(0);
if (!m_dpy) {
throw Dimension_Error("Couldn't create display.");
}
/* Get an appropriate visual */
vi = glXChooseVisual(m_dpy, DefaultScreen(m_dpy),
attributeList);
if (!vi) {
XCloseDisplay(m_dpy);
throw Dimension_Error("Couldn't create display.");
}
/* Create a GLX context */
m_cx = glXCreateContext(m_dpy, vi, 0, GL_TRUE);
if (!m_cx) {
XCloseDisplay(m_dpy);
throw Dimension_Error("Couldn't create display.");
}
/* Create a color map */
m_cmap = XCreateColormap(m_dpy,
RootWindow(m_dpy, vi->screen),
vi->visual, AllocNone);
if (!m_cmap) {
glXDestroyContext(m_dpy, m_cx);
XCloseDisplay(m_dpy);
throw Dimension_Error("Couldn't create display.");
}
/* Create a window */
swa.colormap = m_cmap;
swa.border_pixel = 0;
swa.event_mask = StructureNotifyMask;
m_win = XCreateWindow(m_dpy,
RootWindow(m_dpy, vi->screen),
0, 0, canvas.width(), canvas.height(),
0, vi->depth, InputOutput, vi->visual,
CWBorderPixel|CWColormap|CWEventMask, &swa);
if (!m_win) {
XFreeColormap(m_dpy, m_cmap);
glXDestroyContext(m_dpy, m_cx);
XCloseDisplay(m_dpy);
throw Dimension_Error("Couldn't create display.");
}
XStoreName(m_dpy, m_win, "glX");
XMapWindow(m_dpy, m_win);
XIfEvent(m_dpy, &m_event, &WaitForNotify, (char*)m_win);
/* Connect the context to the window */
glXMakeCurrent(m_dpy, m_win, m_cx);
}
Display::~Display()
{
XDestroyWindow(m_dpy, m_win);
XFreeColormap(m_dpy, m_cmap);
glXDestroyContext(m_dpy, m_cx);
XCloseDisplay(m_dpy);
}
void
Display::flush()
{
glFlush();
glXSwapBuffers(m_dpy, m_win);
}
namespace
{
struct Progressbar_Payload
{
public:
std::ostream* ostr;
const Progress* progress;
};
void *
progressbar_thread(void *ptr)
{
Progressbar_Payload* payload
= reinterpret_cast<Progressbar_Payload*>(ptr);
*payload->ostr << *payload->progress;
int* ret = static_cast<int*>(std::malloc(sizeof(int)));
if (ret) {
*ret = 0;
}
return ret;
}
}
Progress progressbar_async(std::ostream& ostr,
const Dimension::Progress& progress)
{
dmnsn_progress* barprogress = dmnsn_new_progress();
if (!barprogress) {
throw Dimension_Error("Couldn't allocate progress object.");
}
Progressbar_Payload* payload = new Progressbar_Payload;
payload->ostr = &ostr;
payload->progress = &progress;
/* Create the worker thread */
if (pthread_create(&barprogress->thread, NULL, &progressbar_thread,
reinterpret_cast<void*>(payload)) != 0)
{
throw Dimension_Error("Couldn't create background thread.");
}
return Progress(barprogress);
}
}
// Print a progress bar of the progress of `progress'
std::ostream&
operator<<(std::ostream& ostr, const Dimension::Progress& progress)
{
const unsigned int increments = 32;
ostr << "|" << std::flush;
for (unsigned int i = 0; i < increments; ++i) {
progress.wait(static_cast<double>(i + 1)/increments);
ostr << "=" << std::flush;
}
return ostr << "|" << std::flush;
}
}
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