Add rectangle tests

1 files changed, 192 insertions, 19 deletions

diff --git a/graphics.c b/graphics.c
index 97f4518..b03e37d 100755
--- a/graphics.c
+++ b/graphics.c
@@ -2252,6 +2252,174 @@ TEST("colors") {
   REQUIRE_EQ((purple.z + 2e-7) * 100, 100);
 }
 
+TEST("rectangle corners") {
+  i64 w = 10;
+  i64 h = 10;
+
+  vec4_f32 pixels[100] = {0};
+
+  fill_rectangle_to_buffer(
+    (Pixel_Buffer) { .width = w, .height = h, .stride = w, .pixels = pixels },
+    (vec4_f32)     { 1.0f, 1.0f, 1.0f, 1.0f, },
+    (Box)          { .x = -1, .y = -1, .width = 2, .height = 2, }
+  );
+
+  fill_rectangle_to_buffer(
+    (Pixel_Buffer) { .width = w, .height = h, .stride = w, .pixels = pixels },
+    (vec4_f32)     { 1.0f, 1.0f, 1.0f, 1.0f, },
+    (Box)          { .x = 9, .y = -1, .width = 2, .height = 2, }
+  );
+
+  fill_rectangle_to_buffer(
+    (Pixel_Buffer) { .width = w, .height = h, .stride = w, .pixels = pixels },
+    (vec4_f32)     { 1.0f, 1.0f, 1.0f, 1.0f, },
+    (Box)          { .x = -1, .y = 9, .width = 2, .height = 2, }
+  );
+
+  fill_rectangle_to_buffer(
+    (Pixel_Buffer) { .width = w, .height = h, .stride = w, .pixels = pixels },
+    (vec4_f32)     { 1.0f, 1.0f, 1.0f, 1.0f, },
+    (Box)          { .x = 9, .y = 9, .width = 2, .height = 2, }
+  );
+
+  b8 expect_bits[100] = {
+    1, 0, 0, 0, 0, 0, 0, 0, 0, 1,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    1, 0, 0, 0, 0, 0, 0, 0, 0, 1,
+  };
+
+  b8 ok = 1;
+
+  for (i64 i = 0; i < w * h; ++i) {
+    if (expect_bits[i] != (pixels[i].x > 0.5) ||
+        expect_bits[i] != (pixels[i].y > 0.5) ||
+        expect_bits[i] != (pixels[i].z > 0.5) ||
+        expect_bits[i] != (pixels[i].w > 0.5)) {
+      ok = 0;
+      break;
+    }
+  }
+
+  REQUIRE(ok);
+}
+
+TEST("rectangle middle") {
+  i64 w = 10;
+  i64 h = 10;
+
+  vec4_f32 pixels[100] = {0};
+
+  fill_rectangle_to_buffer(
+    (Pixel_Buffer) { .width = w, .height = h, .stride = w, .pixels = pixels },
+    (vec4_f32)     { 1.0f, 1.0f, 1.0f, 1.0f, },
+    (Box)          { .x = 1, .y = 1, .width = 8, .height = 8, }
+  );
+
+  b8 expect_bits[100] = {
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 1, 1, 1, 1, 1, 1, 1, 1, 0,
+    0, 1, 1, 1, 1, 1, 1, 1, 1, 0,
+    0, 1, 1, 1, 1, 1, 1, 1, 1, 0,
+    0, 1, 1, 1, 1, 1, 1, 1, 1, 0,
+    0, 1, 1, 1, 1, 1, 1, 1, 1, 0,
+    0, 1, 1, 1, 1, 1, 1, 1, 1, 0,
+    0, 1, 1, 1, 1, 1, 1, 1, 1, 0,
+    0, 1, 1, 1, 1, 1, 1, 1, 1, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  };
+
+  b8 ok = 1;
+
+  for (i64 i = 0; i < w * h; ++i) {
+    if (expect_bits[i] != (pixels[i].x > 0.5) ||
+        expect_bits[i] != (pixels[i].y > 0.5) ||
+        expect_bits[i] != (pixels[i].z > 0.5) ||
+        expect_bits[i] != (pixels[i].w > 0.5)) {
+      ok = 0;
+      break;
+    }
+  }
+
+  REQUIRE(ok);
+}
+
+TEST("rectangle aliasing") {
+  i64 w = 10;
+  i64 h = 10;
+
+  vec4_f32 pixels[100] = {0};
+
+  fill_rectangle_to_buffer(
+    (Pixel_Buffer) { .width = w, .height = h, .stride = w, .pixels = pixels },
+    (vec4_f32)     { 1.0f, 1.0f, 1.0f, 1.0f, },
+    (Box)          { .x = 1.4, .y = 1.4, .width = 2.0, .height = 2.0, }
+  );
+
+  fill_rectangle_to_buffer(
+    (Pixel_Buffer) { .width = w, .height = h, .stride = w, .pixels = pixels },
+    (vec4_f32)     { 1.0f, 1.0f, 1.0f, 1.0f, },
+    (Box)          { .x = 4.0, .y = 1.0, .width = 2.4, .height = 2.4, }
+  );
+
+  fill_rectangle_to_buffer(
+    (Pixel_Buffer) { .width = w, .height = h, .stride = w, .pixels = pixels },
+    (vec4_f32)     { 1.0f, 1.0f, 1.0f, 1.0f, },
+    (Box)          { .x = 6.6, .y = 1.0, .width = 2.0, .height = 2.0, }
+  );
+
+  fill_rectangle_to_buffer(
+    (Pixel_Buffer) { .width = w, .height = h, .stride = w, .pixels = pixels },
+    (vec4_f32)     { 1.0f, 1.0f, 1.0f, 1.0f, },
+    (Box)          { .x = 1.0, .y = 3.6, .width = 2.0, .height = 2.0, }
+  );
+
+  fill_rectangle_to_buffer(
+    (Pixel_Buffer) { .width = w, .height = h, .stride = w, .pixels = pixels },
+    (vec4_f32)     { 1.0f, 1.0f, 1.0f, 1.0f, },
+    (Box)          { .x = 4.0, .y = 4.0, .width = 2.4, .height = 2.4, }
+  );
+
+  fill_rectangle_to_buffer(
+    (Pixel_Buffer) { .width = w, .height = h, .stride = w, .pixels = pixels },
+    (vec4_f32)     { 1.0f, 1.0f, 1.0f, 1.0f, },
+    (Box)          { .x = 7.4, .y = 4.4, .width = 1.2, .height = 1.2, }
+  );
+
+  b8 expect_bits[100] = {
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 1, 1, 0, 1, 1, 0, 1, 1, 0,
+    0, 1, 1, 0, 1, 1, 0, 1, 1, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 1, 1, 0, 1, 1, 0, 1, 1, 0,
+    0, 1, 1, 0, 1, 1, 0, 1, 1, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  };
+
+  b8 ok = 1;
+
+  for (i64 i = 0; i < w * h; ++i) {
+    if (expect_bits[i] != (pixels[i].x > 0.5) ||
+        expect_bits[i] != (pixels[i].y > 0.5) ||
+        expect_bits[i] != (pixels[i].z > 0.5) ||
+        expect_bits[i] != (pixels[i].w > 0.5)) {
+      ok = 0;
+      break;
+    }
+  }
+
+  REQUIRE(ok);
+}
+
 TEST("text letter A") {
   i64 w = 10;
   i64 h = 10;
@@ -2260,9 +2428,9 @@ TEST("text letter A") {
 
   draw_text_area_to_buffer(
     (Pixel_Buffer) {
-      .width  = 10,
-      .height = 10,
-      .stride = 10,
+      .width  = w,
+      .height = h,
+      .stride = w,
       .pixels = pixels,
     },
     0,
@@ -2286,15 +2454,19 @@ TEST("text letter A") {
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
   };
 
+  b8 ok = 1;
+
   for (i64 i = 0; i < w * h; ++i) {
     if (expect_bits[i] != (pixels[i].x > 0.5) ||
         expect_bits[i] != (pixels[i].y > 0.5) ||
         expect_bits[i] != (pixels[i].z > 0.5) ||
         expect_bits[i] != (pixels[i].w > 0.5)) {
-      REQUIRE(0);
+      ok = 0;
       break;
     }
   }
+
+  REQUIRE(ok);
 }
 
 TEST("text letter z") {
@@ -2305,9 +2477,9 @@ TEST("text letter z") {
 
   draw_text_area_to_buffer(
     (Pixel_Buffer) {
-      .width  = 10,
-      .height = 10,
-      .stride = 10,
+      .width  = w,
+      .height = h,
+      .stride = w,
       .pixels = pixels,
     },
     0,
@@ -2331,15 +2503,19 @@ TEST("text letter z") {
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
   };
 
+  b8 ok = 1;
+
   for (i64 i = 0; i < w * h; ++i) {
     if (expect_bits[i] != (pixels[i].x > 0.5) ||
         expect_bits[i] != (pixels[i].y > 0.5) ||
         expect_bits[i] != (pixels[i].z > 0.5) ||
         expect_bits[i] != (pixels[i].w > 0.5)) {
-      REQUIRE(0);
+      ok = 0;
       break;
     }
   }
+
+  REQUIRE(ok);
 }
 
 TEST("text digits 42") {
@@ -2350,9 +2526,9 @@ TEST("text digits 42") {
 
   draw_text_area_to_buffer(
     (Pixel_Buffer) {
-      .width  = 10,
-      .height = 10,
-      .stride = 10,
+      .width  = w,
+      .height = h,
+      .stride = w,
       .pixels = pixels,
     },
     0,
@@ -2376,23 +2552,20 @@ TEST("text digits 42") {
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
   };
 
+  b8 ok = 1;
+
   for (i64 i = 0; i < w * h; ++i) {
     if (expect_bits[i] != (pixels[i].x > 0.5) ||
         expect_bits[i] != (pixels[i].y > 0.5) ||
         expect_bits[i] != (pixels[i].z > 0.5) ||
         expect_bits[i] != (pixels[i].w > 0.5)) {
-      REQUIRE(0);
+      ok = 0;
       break;
     }
   }
-}
 
-static Pixel_Buffer _test_pixels = {
-  .width  = 1280,
-  .height = 720,
-  .stride = 1280,
-  .pixels = (vec4_f32[1280 * 720]) {0},
-};
+  REQUIRE(ok);
+}
 
 #ifndef EVERY_TEST_SUITE
 void update_and_render_frame(void) { }