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-rw-r--r--tunnel/src/main.cc265
1 files changed, 137 insertions, 128 deletions
diff --git a/tunnel/src/main.cc b/tunnel/src/main.cc
index c050c8c..aec72a3 100644
--- a/tunnel/src/main.cc
+++ b/tunnel/src/main.cc
@@ -19,11 +19,11 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
Author: Eleni Maria Stea <elene.mst@gmail.com>
*/
+#include "tunneltex.h"
+#include "winnie.h"
+#include <math.h>
#include <stdio.h>
#include <stdlib.h>
-#include <math.h>
-#include "winnie.h"
-#include "tunneltex.h"
static void resize(int xsz, int ysz);
static void display(Window *win);
@@ -37,146 +37,155 @@ static Pixmap *tex;
static float *umap, *vmap;
static unsigned long start_time;
-extern "C" bool init()
+extern "C" bool
+init()
{
- Window *win = new Window;
- win->set_title("tunnel effect");
- win->move(380, 280);
- win->resize(xsz, ysz);
- win->set_display_callback(display);
- win->set_timer_callback(timer);
-
- tex = new Pixmap;
- tex->set_image(gimp_image.width, gimp_image.height);
-
- for(int i=0; i<tex->width * tex->height; i++) {
- tex->pixels[i * 4] = gimp_image.pixel_data[i * 3];
- tex->pixels[i * 4 + 1] = gimp_image.pixel_data[i * 3 + 1];
- tex->pixels[i * 4 + 2] = gimp_image.pixel_data[i * 3 + 2];
- }
-
- resize(xsz, ysz);
- wm->add_window(win);
-
- start_time = winnie_get_time();
- set_window_timer(win, 25, TIMER_REPEAT);
- return true;
+ Window *win = new Window;
+ win->set_title("tunnel effect");
+ win->move(380, 280);
+ win->resize(xsz, ysz);
+ win->set_display_callback(display);
+ win->set_timer_callback(timer);
+
+ tex = new Pixmap;
+ tex->set_image(gimp_image.width, gimp_image.height);
+
+ for (int i = 0; i < tex->width * tex->height; i++) {
+ tex->pixels[i * 4] = gimp_image.pixel_data[i * 3];
+ tex->pixels[i * 4 + 1] = gimp_image.pixel_data[i * 3 + 1];
+ tex->pixels[i * 4 + 2] = gimp_image.pixel_data[i * 3 + 2];
+ }
+
+ resize(xsz, ysz);
+ wm->add_window(win);
+
+ start_time = winnie_get_time();
+ set_window_timer(win, 25, TIMER_REPEAT);
+ return true;
}
-extern "C" void cleanup()
+extern "C" void
+cleanup()
{
- delete tex;
+ delete tex;
}
-static void resize(int width, int height)
+static void
+resize(int width, int height)
{
- xsz = width;
- ysz = height;
+ xsz = width;
+ ysz = height;
- calc_tunnel_mapping();
+ calc_tunnel_mapping();
}
-static void display(Window *win)
+static void
+display(Window *win)
{
- Pixmap *fb = get_framebuffer_pixmap();
- Rect wrect = win->get_absolute_rect();
-
- if(wrect.width != xsz || wrect.height != ysz) {
- resize(wrect.width, wrect.height);
- }
-
- unsigned long msec = winnie_get_time() - start_time;
- float sec = (float)msec / 1000.0f;
-
- float uoffs = sec * 0.75;
- float voffs = sec;
-
- unsigned char *fbptr = fb->pixels + (wrect.y * fb->width + wrect.x) * 4;
- float *uptr = umap;
- float *vptr = vmap;
-
- for(int i=0; i<ysz; i++) {
- for(int j=0; j<xsz; j++) {
- float u = *uptr++ * 8.0f;
- float v = *vptr++;
- //unsigned long tx = ((((unsigned long)((u << 3) - uoffs)) & 0xff) * tex->width) >> 8;
- //unsigned long tx = ((((u << 3) * tex->width) >> 8) + uoffs) % tex->width;
- //unsigned long ty = (((unsigned long)(v + voffs * 2) & 0xff) * tex->height) >> 8;
- int tx = fmod(u - uoffs, 1.0f) * tex->width;
- if(tx < 0) {
- tx += tex->width;
- }
- int ty = fmod(v + voffs, 1.0f) * tex->height;
-
- float fog = 1.0f - v / 8.0f;
- if(fog < 0.0f) fog = 0.0f;
- if(fog > 1.0f) fog = 1.0f;
-
- unsigned char red, green, blue;
- if(i == ysz / 2 && j == xsz / 2) {
- red = green = blue = 0;
- } else {
- int offs = (ty * tex->width + tx) * 4;
- red = tex->pixels[offs];
- green = tex->pixels[offs + 1];
- blue = tex->pixels[offs + 2];
- }
-
- red = red * fog;
- green = green * fog;
- blue = blue * fog;
-
- fbptr[j * 4] = red;
- fbptr[j * 4 + 1] = green;
- fbptr[j * 4 + 2] = blue;
- }
- fbptr += fb->width * 4;
- }
+ Pixmap *fb = get_framebuffer_pixmap();
+ Rect wrect = win->get_absolute_rect();
+
+ if (wrect.width != xsz || wrect.height != ysz) {
+ resize(wrect.width, wrect.height);
+ }
+
+ unsigned long msec = winnie_get_time() - start_time;
+ float sec = (float) msec / 1000.0f;
+
+ float uoffs = sec * 0.75;
+ float voffs = sec;
+
+ unsigned char *fbptr = fb->pixels + (wrect.y * fb->width + wrect.x) * 4;
+ float *uptr = umap;
+ float *vptr = vmap;
+
+ for (int i = 0; i < ysz; i++) {
+ for (int j = 0; j < xsz; j++) {
+ float u = *uptr++ * 8.0f;
+ float v = *vptr++;
+ // unsigned long tx = ((((unsigned long)((u << 3) - uoffs)) & 0xff) *
+ // tex->width) >> 8; unsigned long tx = ((((u << 3) * tex->width) >> 8) +
+ // uoffs) % tex->width; unsigned long ty = (((unsigned long)(v + voffs *
+ // 2) & 0xff) * tex->height) >> 8;
+ int tx = fmod(u - uoffs, 1.0f) * tex->width;
+ if (tx < 0) {
+ tx += tex->width;
+ }
+ int ty = fmod(v + voffs, 1.0f) * tex->height;
+
+ float fog = 1.0f - v / 8.0f;
+ if (fog < 0.0f)
+ fog = 0.0f;
+ if (fog > 1.0f)
+ fog = 1.0f;
+
+ unsigned char red, green, blue;
+ if (i == ysz / 2 && j == xsz / 2) {
+ red = green = blue = 0;
+ } else {
+ int offs = (ty * tex->width + tx) * 4;
+ red = tex->pixels[offs];
+ green = tex->pixels[offs + 1];
+ blue = tex->pixels[offs + 2];
+ }
+
+ red = red * fog;
+ green = green * fog;
+ blue = blue * fog;
+
+ fbptr[j * 4] = red;
+ fbptr[j * 4 + 1] = green;
+ fbptr[j * 4 + 2] = blue;
+ }
+ fbptr += fb->width * 4;
+ }
}
-static void timer(Window *win)
+static void
+timer(Window *win)
{
- wm->invalidate_region(win->get_absolute_rect());
+ wm->invalidate_region(win->get_absolute_rect());
}
-static bool calc_tunnel_mapping()
+static bool
+calc_tunnel_mapping()
{
- int i, j;
- float *uptr, *vptr;
-
- if(umap || vmap) {
- free(umap);
- free(vmap);
- }
-
- if(!(umap = (float*)malloc(xsz * ysz * sizeof *umap))) {
- return false;
- }
- if(!(vmap = (float*)malloc(xsz * ysz * sizeof *umap))) {
- free(umap);
- return false;
- }
-
- uptr = umap;
- vptr = vmap;
-
- for(i=0; i<ysz; i++) {
- for(j=0; j<xsz; j++) {
- float x = ((float)j / xsz * 2.0 - 1.0) * 1.33333;
- float y = (float)i / ysz * 2.0 - 1.0;
- float angle, z, dist;
-
- if(fabs(x) > 0.00001) {
- angle = atan2(y, x) + M_PI;
- } else {
- angle = y < 0.0 ? M_PI / 2.0 : 3.0 * M_PI / 2.0;
- }
- dist = sqrt(x * x + y * y);
- z = 2.0 / dist;
-
- *uptr++ = angle * 0.5 / M_PI;
- *vptr++ = z;
- }
- }
- return true;
+ int i, j;
+ float *uptr, *vptr;
+
+ if (umap || vmap) {
+ free(umap);
+ free(vmap);
+ }
+
+ if (!(umap = (float *) malloc(xsz * ysz * sizeof *umap))) {
+ return false;
+ }
+ if (!(vmap = (float *) malloc(xsz * ysz * sizeof *umap))) {
+ free(umap);
+ return false;
+ }
+
+ uptr = umap;
+ vptr = vmap;
+
+ for (i = 0; i < ysz; i++) {
+ for (j = 0; j < xsz; j++) {
+ float x = ((float) j / xsz * 2.0 - 1.0) * 1.33333;
+ float y = (float) i / ysz * 2.0 - 1.0;
+ float angle, z, dist;
+
+ if (fabs(x) > 0.00001) {
+ angle = atan2(y, x) + M_PI;
+ } else {
+ angle = y < 0.0 ? M_PI / 2.0 : 3.0 * M_PI / 2.0;
+ }
+ dist = sqrt(x * x + y * y);
+ z = 2.0 / dist;
+
+ *uptr++ = angle * 0.5 / M_PI;
+ *vptr++ = z;
+ }
+ }
+ return true;
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-21 23:59:33 +0000