1 files changed, 92 insertions, 0 deletions
diff --git a/libdimension/canvas/canvas.c b/libdimension/canvas/canvas.c
new file mode 100644
index 0000000..350cd60
--- /dev/null
+++ b/libdimension/canvas/canvas.c
@@ -0,0 +1,92 @@
+/*************************************************************************
+ * Copyright (C) 2009-2014 Tavian Barnes <tavianator@tavianator.com>     *
+ *                                                                       *
+ * This file is part of The Dimension Library.                           *
+ *                                                                       *
+ * The Dimension Library is free software; you can redistribute it and/  *
+ * or modify it under the terms of the GNU Lesser General Public License *
+ * as published by the Free Software Foundation; either version 3 of the *
+ * License, or (at your option) any later version.                       *
+ *                                                                       *
+ * The Dimension Library is distributed in the hope that it will be      *
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty   *
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU  *
+ * Lesser General Public License for more details.                       *
+ *                                                                       *
+ * You should have received a copy of the GNU Lesser General Public      *
+ * License along with this program.  If not, see                         *
+ * <http://www.gnu.org/licenses/>.                                       *
+ *************************************************************************/
+
+/**
+ * @file
+ * Canveses.
+ */
+
+#include "dimension/canvas.h"
+
+dmnsn_canvas *
+dmnsn_new_canvas(dmnsn_pool *pool, size_t width, size_t height)
+{
+  dmnsn_canvas *canvas = DMNSN_PALLOC(pool, dmnsn_canvas);
+  canvas->width = width;
+  canvas->height = height;
+  canvas->optimizers = DMNSN_PALLOC_ARRAY(pool, dmnsn_canvas_optimizer *);
+  canvas->pixels = dmnsn_palloc(pool, sizeof(dmnsn_tcolor)*width*height);
+  return canvas;
+}
+
+void
+dmnsn_init_canvas_optimizer(dmnsn_canvas_optimizer *optimizer)
+{
+  optimizer->optimizer_fn = NULL;
+}
+
+// Set a canvas optimizer
+void
+dmnsn_canvas_optimize(dmnsn_canvas *canvas, const dmnsn_canvas_optimizer *optimizer)
+{
+  dmnsn_array_push(canvas->optimizers, &optimizer);
+}
+
+// Find an optimizer if it's already installed
+dmnsn_canvas_optimizer *
+dmnsn_canvas_find_optimizer(const dmnsn_canvas *canvas, dmnsn_canvas_optimizer_fn *optimizer_fn)
+{
+  DMNSN_ARRAY_FOREACH (dmnsn_canvas_optimizer **, i, canvas->optimizers) {
+    if ((*i)->optimizer_fn == optimizer_fn) {
+      return *i;
+    }
+  }
+
+  return NULL;
+}
+
+// Set the value of a pixel
+void
+dmnsn_canvas_set_pixel(dmnsn_canvas *canvas, size_t x, size_t y,
+                       dmnsn_tcolor tcolor)
+{
+  dmnsn_assert(x < canvas->width && y < canvas->height,
+               "Canvas access out of bounds.");
+  dmnsn_assert(!dmnsn_tcolor_isnan(tcolor), "Pixel has NaN component.");
+
+  // Set the pixel
+  canvas->pixels[y*canvas->width + x] = tcolor;
+
+  // Call the optimizers
+  DMNSN_ARRAY_FOREACH (dmnsn_canvas_optimizer **, i, canvas->optimizers) {
+    (*i)->optimizer_fn(*i, canvas, x, y);
+  }
+}
+
+// Fill a canvas with a solid color
+void
+dmnsn_canvas_clear(dmnsn_canvas *canvas, dmnsn_tcolor tcolor)
+{
+  for (size_t x = 0; x < canvas->width; ++x) {
+    for (size_t y = 0; y < canvas->height; ++y) {
+      dmnsn_canvas_set_pixel(canvas, x, y, tcolor);
+    }
+  }
+}