Added rounded brush

README.md

@@ -27,11 +27,12 @@ To resume working on a tileset:
 
 ### General
 
+- `1-7` Patterns
 - `TAB` Cycle between colors
 - `H` Toggle Guides
 - `Z` Decr. Brush Size
 - `X` Incr. Brush Size
-- `1-7` Patterns
+- `N` Clear
 
 ### Paint
 

chr6.c

@@ -66,7 +66,7 @@ inspt(Point* p, int w, int h)
 int
 dispt(Point* a, Point* b)
 {
-	return ((b->x - a->x) * (b->x - a->x)) + ((b->y - a->y) * (b->y - a->y));
+	return (b->x - a->x) * (b->x - a->x) + (b->y - a->y) * (b->y - a->y);
 }
 
 void
@@ -169,7 +169,7 @@ fill(Brush* b, int mode, int size, Point p0, int color)
 	for(x = -size / 2; x < size; ++x)
 		for(y = -size / 2; y < size; ++y) {
 			setpt(&p, p0.x + x, p0.y + y);
-			if(patt(p.x, p.y, mode, size))
+			if(patt(p.x, p.y, mode, size) && dispt(&p0, &p) < size)
 				edit(p.x, p.y, color);
 		}
 	b->edit = 1;
@@ -263,7 +263,7 @@ load(char* path)
 }
 
 void
-render()
+render(void)
 {
 	SDL_Surface* surface = SDL_GetWindowSurface(gWindow);
 	GUIDES = 0;
@@ -273,6 +273,15 @@ render()
 	SDL_FreeSurface(surface);
 }
 
+void
+clear(void)
+{
+	int i;
+	for(i = 0; i < SZ; i++)
+		buffer[i] = color1;
+	redraw(pixels);
+}
+
 void
 quit(void)
 {
@@ -374,6 +383,9 @@ dokey(SDL_Event* event, Brush* b)
 		if(b->size < 30)
 			b->size += 1;
 		break;
+	case SDLK_n:
+		clear();
+		break;
 	}
 	update(b);
 }