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/*************************************************************************
* Copyright (C) 2008 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.h"
dmnsn_scene *
dmnsn_new_default_scene()
{
dmnsn_scene *scene;
dmnsn_object *sphere, *cube;
dmnsn_matrix trans;
dmnsn_sRGB sRGB;
dmnsn_color color;
/* Allocate a new scene */
scene = dmnsn_new_scene();
if (!scene) {
return NULL;
}
/* Background color */
sRGB.R = 0.0;
sRGB.G = 0.0;
sRGB.B = 0.1;
color = dmnsn_color_from_sRGB(sRGB);
color.filter = 0.1;
scene->background = color;
/* Allocate a canvas */
scene->canvas = dmnsn_new_canvas(768, 480);
if (!scene->canvas) {
dmnsn_delete_scene(scene);
return NULL;
}
/* Set up the transformation matrix for the perspective camera */
trans = dmnsn_scale_matrix(
dmnsn_vector_construct(
((double)scene->canvas->x)/scene->canvas->y, 1.0, 1.0
)
);
trans = dmnsn_matrix_mul(
dmnsn_translation_matrix(dmnsn_vector_construct(0.0, 0.0, -4.0)),
trans
);
trans = dmnsn_matrix_mul(
dmnsn_rotation_matrix(dmnsn_vector_construct(0.0, 1.0, 0.0)),
trans
);
/* Create a perspective camera */
scene->camera = dmnsn_new_perspective_camera(trans);
if (!scene->camera) {
dmnsn_delete_canvas(scene->canvas);
dmnsn_delete_scene(scene);
return NULL;
}
/* Now make our objects */
sphere = dmnsn_new_sphere();
if (!sphere) {
dmnsn_delete_perspective_camera(scene->camera);
dmnsn_delete_canvas(scene->canvas);
dmnsn_delete_scene(scene);
return NULL;
}
sphere->trans = dmnsn_matrix_inverse(
dmnsn_scale_matrix(dmnsn_vector_construct(1.25, 1.25, 1.25))
);
dmnsn_array_push(scene->objects, &sphere);
cube = dmnsn_new_cube();
if (!cube) {
dmnsn_delete_sphere(sphere);
dmnsn_delete_perspective_camera(scene->camera);
dmnsn_delete_canvas(scene->canvas);
dmnsn_delete_scene(scene);
return NULL;
}
cube->trans = dmnsn_matrix_inverse(
dmnsn_rotation_matrix(dmnsn_vector_construct(0.75, 0.0, 0.0))
);
dmnsn_array_push(scene->objects, &cube);
return scene;
}
void
dmnsn_delete_default_scene(dmnsn_scene *scene)
{
dmnsn_object *sphere, *cube;
dmnsn_array_get(scene->objects, 0, &sphere);
dmnsn_array_get(scene->objects, 1, &cube);
dmnsn_delete_cube(cube);
dmnsn_delete_sphere(sphere);
dmnsn_delete_perspective_camera(scene->camera);
dmnsn_delete_canvas(scene->canvas);
dmnsn_delete_scene(scene);
}
/* XIfEvent callback */
static Bool
WaitForNotify(Display *d, XEvent *e, char *arg)
{
return (e->type == MapNotify) && (e->xmap.window == (Window)arg);
}
dmnsn_display *
dmnsn_new_display(const dmnsn_canvas *canvas)
{
int attributeList[] = {
GLX_RGBA,
GLX_DOUBLEBUFFER,
GLX_RED_SIZE, 1,
GLX_GREEN_SIZE, 1,
GLX_BLUE_SIZE, 1,
None
};
dmnsn_display *display;
XVisualInfo *vi;
XSetWindowAttributes swa;
display = malloc(sizeof(dmnsn_display));
if (!display) {
return NULL;
}
/* Get an X connection */
display->dpy = XOpenDisplay(0);
if (!display->dpy) {
free(display);
return NULL;
}
/* Get an appropriate visual */
vi = glXChooseVisual(display->dpy, DefaultScreen(display->dpy),
attributeList);
if (!vi) {
XCloseDisplay(display->dpy);
free(display);
return NULL;
}
/* Create a GLX context */
display->cx = glXCreateContext(display->dpy, vi, 0, GL_TRUE);
if (!display->cx) {
XCloseDisplay(display->dpy);
free(display);
return NULL;
}
/* Create a color map */
display->cmap = XCreateColormap(display->dpy,
RootWindow(display->dpy, vi->screen),
vi->visual, AllocNone);
if (!display->cmap) {
glXDestroyContext(display->dpy, display->cx);
XCloseDisplay(display->dpy);
free(display);
return NULL;
}
/* Create a window */
swa.colormap = display->cmap;
swa.border_pixel = 0;
swa.event_mask = StructureNotifyMask;
display->win = XCreateWindow(display->dpy,
RootWindow(display->dpy, vi->screen),
0, 0, canvas->x, canvas->y,
0, vi->depth, InputOutput, vi->visual,
CWBorderPixel|CWColormap|CWEventMask, &swa);
if (!display->win) {
XFreeColormap(display->dpy, display->cmap);
glXDestroyContext(display->dpy, display->cx);
XCloseDisplay(display->dpy);
free(display);
return NULL;
}
XStoreName(display->dpy, display->win, "glX");
XMapWindow(display->dpy, display->win);
XIfEvent(display->dpy, &display->event, WaitForNotify, (char*)display->win);
/* Connect the context to the window */
glXMakeCurrent(display->dpy, display->win, display->cx);
return display;
}
void
dmnsn_delete_display(dmnsn_display *display)
{
if (display) {
XDestroyWindow(display->dpy, display->win);
XFreeColormap(display->dpy, display->cmap);
glXDestroyContext(display->dpy, display->cx);
XCloseDisplay(display->dpy);
free(display);
}
}
void
dmnsn_display_frame(dmnsn_display *display)
{
glFlush();
glXSwapBuffers(display->dpy, display->win);
}
/* Print a progress bar of the progress of `progress' */
void
progressbar(const char *str, const dmnsn_progress *progress)
{
const unsigned int increments = 32;
unsigned int i;
printf("%s|", str);
fflush(stdout);
for (i = 0; i < increments; ++i) {
dmnsn_wait_progress(progress, ((double)(i + 1))/increments);
printf("=");
fflush(stdout);
}
printf("|\n");
fflush(stdout);
}
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