*: initial commit derived from whale stage code

This code was used in whale [1], and prior to that was used in
a smaller project called mal.  Since I seemed to be doing a lot of
reusing and building upon this, it seemed prudent to just stick it
in a repo as a .a I could submodule in future SDL2 art projects.

There are some kludges in this code currently, which will be fixed up
in time.

1 files changed, 57 insertions, 0 deletions

diff --git a/src/stage.h b/src/stage.h
new file mode 100644
index 0000000..05ee3ec
--- /dev/null
+++ b/src/stage.h
@@ -0,0 +1,57 @@
+/*
+ *  Copyright (C) 2018  Vito Caputo - <vcaputo@pengaru.com>
+ *
+ *  This program is free software: you can redistribute it and/or modify it
+ *  under the terms of the GNU General Public License version 3 as published
+ *  by the Free Software Foundation.
+ *
+ *  This program 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 General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _STAGE_H
+#define _STAGE_H
+
+#include <SDL.h>
+
+#define STAGE_NODE_NAME_MAX	16
+#define STAGE_LAYERS_MAX	10
+
+typedef struct aabb_t aabb_t;
+typedef struct stage_t stage_t;
+typedef struct stage_node_t stage_node_t;
+
+typedef int (*stage_render_func_t)(SDL_Renderer *renderer, void *object, int width, int height, SDL_Texture **texture);
+typedef void (*stage_free_func_t)(void *object);
+
+stage_t * stage_new(SDL_Renderer *renderer, float aspect_ratio);
+void stage_clear(stage_t *stage);
+stage_t * stage_free(stage_t *stage);
+void stage_fit(const stage_t *stage, int width, int height, int *res_width, int *res_height);
+void stage_render(stage_t *stage);
+stage_node_t * stage_node_new(stage_t *stage, int layer, const char *name, void *object, stage_render_func_t render_func, stage_free_func_t free_func);
+
+void stage_get_output_size(stage_t *stage, int *res_width, int *res_height);
+void stage_node_set_object(const stage_t *stage, stage_node_t *node, void *object);
+void stage_node_get_object(const stage_t *stage, stage_node_t *node, void **res_object);
+void stage_node_replace(const stage_t *stage, stage_node_t *node, const char *name, void *object, stage_render_func_t render_func, stage_free_func_t free_func);
+stage_node_t * stage_node_free(stage_t *stage, stage_node_t *node);
+void stage_node_set_alpha(const stage_t *stage, stage_node_t *node, float alpha);
+void stage_node_set_aabb(const stage_t *stage, stage_node_t *node, const aabb_t *aabb);
+void stage_node_get_aabb(const stage_t *stage, stage_node_t *node, aabb_t *res_aabb);
+void stage_node_set_active(const stage_t *stage, stage_node_t *node);
+void stage_node_set_inactive(const stage_t *stage, stage_node_t *node);
+void stage_node_set_locked(const stage_t *stage, stage_node_t *node);
+void stage_node_set_unlocked(const stage_t *stage, stage_node_t *node);
+void stage_node_set_layer(stage_t *stage, stage_node_t *node, int layer);
+void stage_node_set_angle(const stage_t *stage, stage_node_t *node, double angle);
+void stage_node_get_angle(const stage_t *stage, stage_node_t *node, double *res_angle);
+stage_node_t * stage_node_lookup_name(const stage_t *stage, const char *name);
+stage_node_t * stage_node_lookup_cartesian(const stage_t *stage, int x, int y);
+
+#endif