1 files changed, 0 insertions, 269 deletions
diff --git a/examples/landscape.c b/examples/landscape.c
deleted file mode 100755
index 9ee2e98..0000000
--- a/examples/landscape.c
+++ /dev/null
@@ -1,269 +0,0 @@
-#if 0 /*
-#/  ================================================================
-#/
-#/    landscape.c
-#/
-#/  ================================================================
-#/
-#/    Self-compilation shell script
-#/
-SRC=${0##*./}
-BIN=${SRC%.*}
-gcc                                 \
-  -Wall -Wextra -Werror -pedantic   \
-  -Wno-old-style-declaration        \
-  -Wno-missing-braces               \
-  -Wno-unused-variable              \
-  -Wno-unused-but-set-variable      \
-  -Wno-unused-parameter             \
-  -Wno-overlength-strings           \
-  -O3                               \
-  -fsanitize=undefined,address,leak \
-  -lX11 -lm                         \
-  -o $BIN $SRC &&                   \
-  ./$BIN $@ && rm $BIN
-exit $? # */
-#endif
-
-#include "../graphics.c"
-
-#define EPS 1e-8
-
-enum {
-  MAX_NUM_TILES = 10 * 1024 * 1024,
-};
-
-typedef struct {
-  i32 index;
-  i32 version;
-} Handle;
-
-typedef union {
-  struct { f64 x, y; };
-  struct { f64 v[2]; };
-} Vec2;
-
-typedef union {
-  struct { f64 x, y, z; };
-  struct { f64 r, g, b; };
-  struct { f64 v[3];    };
-} Vec3;
-
-typedef union {
-  struct { f64 x, y, z, w; };
-  struct { f64 r, g, b, a; };
-  struct { f64 v[4];       };
-} Vec4;
-
-typedef struct {
-  b8  visible;
-  f64 x;
-  f64 y;
-  f64 size;
-} Screen_Area;
-
-typedef struct {
-  u32  background;
-  i64  system_time;
-  i64  time;
-  i32  map_num_x;
-  i32  map_num_y;
-  f64  map[MAX_NUM_TILES];
-  f64  screen_distance;
-  f64  zoom;
-  f64  tilt;
-  Vec3 eye_position;
-  Vec3 right;
-  Vec3 up;
-  Vec3 forward;
-  Vec3 screen_x_axis;
-  Vec3 screen_y_axis;
-  Vec3 screen_z_axis;
-} World;
-
-#define CHECK(fail_return, condition) \
-  assert(condition);                  \
-  if (!(condition))                   \
-    return fail_return;
-
-World world = {0};
-
-f64 dot(Vec3 a, Vec3 b) {
-  return a.x * b.x + a.y * b.y + a.z * b.z;
-}
-
-Vec3 cross(Vec3 a, Vec3 b) {
-  return (Vec3) {
-    .x = a.y * b.z - a.z * b.y,
-    .y = a.z * b.x - a.x * b.z,
-    .z = a.x * b.y - a.y * b.x,
-  };
-}
-
-Vec3 neg(Vec3 a) {
-  return (Vec3) {
-    .x = -a.x,
-    .y = -a.y,
-    .z = -a.z,
-  };
-}
-
-Vec3 add(Vec3 a, Vec3 b) {
-  return (Vec3) {
-    .x = a.x + b.x,
-    .y = a.y + b.y,
-    .z = a.z + b.z,
-  };
-}
-
-Vec3 sub(Vec3 a, Vec3 b) {
-  return (Vec3) {
-    .x = a.x - b.x,
-    .y = a.y - b.y,
-    .z = a.z - b.z,
-  };
-}
-
-Vec3 mul(Vec3 a, f64 b) {
-  return (Vec3) {
-    .x = a.x * b,
-    .y = a.y * b,
-    .z = a.z * b,
-  };
-}
-
-Vec3 v_div(Vec3 a, f64 b) {
-  if (b > -EPS && b < EPS) {
-    assert(0);
-    return (Vec3) {
-      .x = 0.,
-      .y = 0.,
-      .z = 1.,
-    };
-  }
-  return (Vec3) {
-    .x = a.x / b,
-    .y = a.y / b,
-    .z = a.z / b,
-  };
-}
-
-Vec3 normal(Vec3 a) {
-  return v_div(a, sqrt(dot(a, a)));
-}
-
-void resolve_axes(void) {
-  world.right   = (Vec3) { .x = 1., .y = 0., .z = 0., };
-  world.forward = (Vec3) { .x = 0., .y = 1., .z = 0., };
-  world.up      = (Vec3) { .x = 0., .y = 0., .z = 1., };
-
-  if (world.tilt < 0.0)
-    world.tilt += M_PI * 2.0 * floor(-world.tilt / (M_PI * 2.0) + 1.0);
-  if (world.tilt >= M_PI * 2.0)
-    world.tilt -= M_PI * 2.0 * floor(world.tilt / (M_PI * 2.0));
-
-  world.screen_z_axis = (Vec3) {
-    .x = 0.,
-    .y = sin(world.tilt),
-    .z = -cos(world.tilt),
-  };
-
-  world.screen_y_axis = normal(cross(world.screen_z_axis, world.right));
-  world.screen_x_axis = normal(cross(world.screen_y_axis, world.screen_z_axis));
-}
-
-Screen_Area world_to_screen(Vec3 p, f64 size) {
-  Vec3 r = sub(p, world.eye_position);
-  f64  l = dot(r, world.screen_z_axis);
-
-  if (l < EPS)
-    return (Screen_Area) { .visible = 0, };
-
-  f64 k = (world.screen_distance / l) * world.zoom;
-
-  f64 x = k * dot(r, world.screen_x_axis);
-  f64 y = k * dot(r, world.screen_y_axis);
-
-  f64 hw = platform.frame_width  * .5;
-  f64 hh = platform.frame_height * .5;
-
-  return (Screen_Area) {
-    .visible = 1,
-    .x       = hw + x,
-    .y       = hh + y,
-    .size    = k * size,
-  };
-}
-
-Vec3 screen_to_world(i32 x, i32 y) {
-  f64 fx = ((f64) x - platform.frame_width  * .5) / world.zoom;
-  f64 fy = ((f64) y - platform.frame_height * .5) / world.zoom;
-
-  Vec3 r = add(add(
-    mul(world.screen_x_axis, fx),
-    mul(world.screen_y_axis, fy)),
-    mul(world.screen_z_axis, world.screen_distance)
-  );
-
-  if (r.z < -EPS || r.z > EPS)
-    r = mul(r, -world.eye_position.z / r.z);
-
-  return add(world.eye_position, r);
-}
-
-void update_and_render_frame(void) {
-  p_handle_events();
-
-  i64 time_elapsed   = p_time() - world.system_time;
-  world.system_time += time_elapsed;
-
-  resolve_axes();
-
-  if (time_elapsed > 0) {
-    if (platform.key_down['w'])
-      world.tilt += .001 * time_elapsed;
-    if (platform.key_down['s'])
-      world.tilt -= .001 * time_elapsed;
-
-    f64 k = world.eye_position.z;
-    if (world.zoom > EPS)
-      k /= world.zoom;
-
-    if (platform.wheel_dy != 0)
-      world.eye_position.z -= (f64) platform.wheel_dy;
-
-    if (platform.key_down[BUTTON_RIGHT]) {
-      world.eye_position.x -= platform.cursor_dx * k;
-      world.eye_position.y += platform.cursor_dy * k;
-    }
-
-    world.time += time_elapsed;
-  }
-
-  for (i32 j = 0; j < platform.frame_height; ++j)
-    for (i32 i = 0; i < platform.frame_width; ++i)
-      platform.pixels[j * platform.frame_width + i] = world.background;
-
-  p_render_frame();
-}
-
-i32 main(i32 argc, c8 **argv) {
-  (void) argc;
-  (void) argv;
-
-  platform = (Platform) {
-    .title        = "Landscape",
-    .frame_width  = 960,
-    .frame_height = 720,
-  };
-
-  world.background      = u32_from_rgb(.03f, .08f, .01f);
-  world.system_time     = p_time();
-  world.screen_distance = 1.;
-  world.zoom            = 1e+3;
-  world.eye_position    = (Vec3) { .z = 10., };
-
-  p_event_loop();
-
-  return 0;
-}