Unix build

src/Makefile

@@ -2,7 +2,8 @@
 CC = gcc
 CFLAGS = -std=gnu23 -Wall -Wextra -O2
 CXXFLAGS = -std=gnu++17 -Wall -Wextra -O2 -fno-exceptions -fno-rtti
-LIBS = -lgdi32
+WIN_LIBS = -lgdi32
+UNIX_LIBS = -lX11 -lm
 
 # Micro options
 MCU = atmega328p
@@ -25,7 +26,7 @@ WIN_SOURCES = $(BASE_SOURCES) platforms/win/win.c
 WIN_OBJECTS = $(WIN_SOURCES:.c=.wo)
 WIN_TARGET = $(TARGET).exe
 
-UNIX_SOURCES = $(BASE_SOURCES) platforms/unix.c
+UNIX_SOURCES = $(BASE_SOURCES) platforms/unix/unix.c
 UNIX_OBJECTS = $(UNIX_SOURCES:.c=.uo)
 UNIX_TARGET = $(TARGET)
 
@@ -39,7 +40,12 @@ HEX = $(TARGET).hex
 win: $(WIN_TARGET)
 
 $(WIN_TARGET): $(WIN_OBJECTS)
-	$(CC) -o $@ $^ $(LIBS)
+	$(CC) -o $@ $^ $(WIN_LIBS)
+
+unix: $(UNIX_TARGET)
+
+$(UNIX_TARGET): $(UNIX_OBJECTS)
+	$(CC) -o $@ $^ $(UNIX_LIBS)
 
 micro: $(HEX)
 
@@ -68,7 +74,7 @@ run_win: $(WIN_TARGET)
 	.\$(WIN_TARGET)
 
 run_unix: $(UNIX_TARGET)
-	.\$(UNIX_TARGET)
+	./$(UNIX_TARGET)
 
 upload_micro: $(HEX)
 	$(AVRDUDE) -p $(MCU) -c $(PROGRAMMER) -P $(PORT) -b 57600 -U flash:w:$(HEX):i

src/engine/object.c

@@ -27,7 +27,7 @@ Point object_get_centroid(const Object *const object) {
   return centroid;
 }
 
-void object_draw(const Object *object, const Screen *const screen,
+void object_draw(const Object *object, const EngineScreen *const screen,
                  const float *render_matrix, const Camera *const camera,
                  const Color *const color) {
   // Массив для отслеживания, какие рёбра нужно нарисовать

src/engine/object.h

@@ -20,7 +20,7 @@ typedef struct Object {
 
 void object_transform(Object *const object, int size, float *translate_matrix);
 Point object_get_centroid(const Object *const object);
-void object_draw(const Object *object, const Screen *const screen,
+void object_draw(const Object *object, const EngineScreen *const screen,
                  const float *render_matrix, const Camera *const camera,
                  const Color *const color);
 

src/engine/point.c

@@ -39,7 +39,8 @@ void point_create_translate_matrix(const Point *const position,
   }
 }
 
-ScreenPoint point_to_screen_point(Point *point, const Screen *const screen,
+ScreenPoint point_to_screen_point(Point *point,
+                                  const EngineScreen *const screen,
                                   const float *render_matrix) {
   float tmp[] = {point->coordinates[0], point->coordinates[1],
                  point->coordinates[2], 1.0f};

src/engine/point.h

@@ -14,7 +14,8 @@ void point_transform(Point *const point, int size,
                      const float *translate_matrix);
 void point_create_translate_matrix(const Point *const position,
                                    float *translate_matrix, int k);
-ScreenPoint point_to_screen_point(Point *point, const Screen *const screen,
+ScreenPoint point_to_screen_point(Point *point,
+                                  const EngineScreen *const screen,
                                   const float *render_matrix);
 
 #endif

src/main.c

@@ -45,7 +45,7 @@ void init_engine() {
   logff(BLUE BOLD UNDERLINE, "Engine init complete!");
 }
 
-void render(const Screen *const screen, const Color *const color) {
+void render(const EngineScreen *const screen, const Color *const color) {
   for (int i = 0; i < number_of_objects; i++) {
     object_draw(&(objects[i]), screen, render_matrix, &camera, color);
   }

src/platforms/micro/micro.cpp

@@ -13,7 +13,7 @@ void draw_line(const ScreenPoint *const sp1, const ScreenPoint *const sp2,
   TV.drawLine(sp1->coordinates[0], sp1->coordinates[1], sp2->coordinates[0],
               sp2->coordinates[1], 1);
 }
-Screen screen = {.width = 128, .height = 64, .draw_line = &draw_line};
+EngineScreen screen = {.width = 128, .height = 64, .draw_line = &draw_line};
 Color white = {.red = (char)255, .green = (char)255, .blue = (char)255};
 
 float gx, gy, gz;

src/platforms/platform.h

@@ -11,7 +11,7 @@
 #endif
 
 EXTERNC void init_engine();
-EXTERNC void render(const Screen *const screen, const Color *const color);
+EXTERNC void render(const EngineScreen *const screen, const Color *const color);
 EXTERNC void tic();
 EXTERNC void rotate(const float angles_speed[3]);
 EXTERNC void destroy();
@@ -27,6 +27,15 @@ EXTERNC void destroy();
 
 #endif // WIN
 
+#ifdef UNIX
+#include "unix/unix.h"
+
+#define FPS 25
+#define WINDOW_WIDTH 800
+#define WINDOW_HEIGHT 600
+
+#endif // WIN
+
 #ifdef MICRO
 
 #define FPS 20

src/platforms/unix/unix.c

@@ -0,0 +1,141 @@
+#include "../platform.h"
+
+#include "unix.h"
+
+const Color white = {255, 255, 255};
+const Color black = {0, 0, 0};
+
+Display *display = NULL;
+Window window;
+GC gc;
+int screen_num;
+int running = 1;
+
+void draw_line_x11(const ScreenPoint *sp1, const ScreenPoint *sp2,
+                   const Color *const color) {
+  if (!display || !gc)
+    return;
+
+  XSetForeground(display, gc,
+                 (color->red << 16) | (color->green << 8) | color->blue);
+  XDrawLine(display, window, gc, sp1->coordinates[0], sp1->coordinates[1],
+            sp2->coordinates[0], sp2->coordinates[1]);
+}
+
+void redraw_window(void) {
+  if (!display || !window)
+    return;
+
+  XWindowAttributes window_attrs;
+  XGetWindowAttributes(display, window, &window_attrs);
+
+  XSetForeground(display, gc,
+                 (black.red << 16) | (black.green << 8) | black.blue);
+  XFillRectangle(display, window, gc, 0, 0, window_attrs.width,
+                 window_attrs.height);
+
+  EngineScreen screen = {.width = window_attrs.width,
+                         .height = window_attrs.height,
+                         .draw_line = &draw_line_x11};
+
+  render(&screen, &white);
+  XFlush(display);
+}
+
+int main() {
+  struct timeval last_time, current_time;
+  long frame_delay = 1000000 / FPS; // микросекунды на кадр
+
+  display = XOpenDisplay(NULL);
+  if (display == NULL) {
+    fprintf(stderr, "Cannot open display\n");
+    return 1;
+  }
+
+  screen_num = DefaultScreen(display);
+
+  window = XCreateSimpleWindow(display, RootWindow(display, screen_num), 0, 0,
+                               WINDOW_WIDTH, WINDOW_HEIGHT, 1,
+                               BlackPixel(display, screen_num),
+                               BlackPixel(display, screen_num));
+
+  XStoreName(display, window, "C3DGraphicEngine");
+
+  XSelectInput(display, window,
+               ExposureMask | KeyPressMask | StructureNotifyMask |
+                   KeyReleaseMask);
+
+  Atom wm_delete_window = XInternAtom(display, "WM_DELETE_WINDOW", False);
+  XSetWMProtocols(display, window, &wm_delete_window, 1);
+
+  gc = XCreateGC(display, window, 0, NULL);
+
+  XSetGraphicsExposures(display, gc, False);
+
+  XMapWindow(display, window);
+  XFlush(display);
+
+  XEvent ev;
+  do {
+    XNextEvent(display, &ev);
+  } while (ev.type != Expose);
+
+  init_engine();
+
+  redraw_window();
+
+  gettimeofday(&last_time, NULL);
+
+  while (running) {
+    while (XPending(display) > 0) {
+      XNextEvent(display, &ev);
+
+      switch (ev.type) {
+      case Expose:
+        if (ev.xexpose.count == 0) {
+          redraw_window();
+        }
+        break;
+
+      case ConfigureNotify:
+        redraw_window();
+        break;
+
+      case KeyPress:
+        if (XLookupKeysym(&ev.xkey, 0) == XK_Escape) {
+          running = 0;
+        }
+        break;
+
+      case ClientMessage:
+        if (ev.xclient.message_type ==
+                XInternAtom(display, "WM_PROTOCOLS", True) &&
+            (Atom)ev.xclient.data.l[0] ==
+                XInternAtom(display, "WM_DELETE_WINDOW", False)) {
+          running = 0;
+        }
+        break;
+      }
+    }
+
+    gettimeofday(&current_time, NULL);
+    long elapsed = (current_time.tv_sec - last_time.tv_sec) * 1000000 +
+                   (current_time.tv_usec - last_time.tv_usec);
+
+    if (elapsed >= frame_delay) {
+      tic();
+
+      redraw_window();
+
+      last_time = current_time;
+    } else {
+      usleep(1000);
+    }
+  }
+
+  XFreeGC(display, gc);
+  XDestroyWindow(display, window);
+  XCloseDisplay(display);
+
+  return 0;
+}

src/platforms/unix/unix.h

@@ -0,0 +1,13 @@
+#ifndef UNIX_H
+#define UNIX_H
+
+#include "../platform.h"
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/time.h>
+#include <unistd.h>
+
+#endif

src/platforms/win/win.c

@@ -32,7 +32,8 @@ LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam,
       DeleteObject(hPen);
     };
 
-    Screen screen = {.width = width, .height = height, .draw_line = &draw_line};
+    EngineScreen screen = {
+        .width = width, .height = height, .draw_line = &draw_line};
 
     render(&screen, &white);
 

src/utils/screen.h

@@ -11,11 +11,11 @@ typedef struct Color {
   char blue;
 } Color;
 
-typedef struct Screen {
+typedef struct EngineScreen {
   int width;
   int height;
   void (*draw_line)(const ScreenPoint *sp1, const ScreenPoint *sp2,
                     const Color *const color);
-} Screen;
+} EngineScreen;
 
 #endif