1 files changed, 184 insertions, 0 deletions
diff --git a/src/scene.h b/src/scene.h
new file mode 100644
index 0000000..dfcf635
--- /dev/null
+++ b/src/scene.h
@@ -0,0 +1,184 @@
+#ifndef ANIMTOOL_SCENE_H_
+#define ANIMTOOL_SCENE_H_
+
+#include "util/container.h"
+#include "util/str.h"
+#include "expr.h"
+#include "draw.h"
+#include "resource.h"
+
+struct bone
+{
+    // mutable
+    float pos[3];
+};
+
+enum pos_type
+{
+    POS_ABSOLUTE,
+    POS_ATTACHED,
+};
+
+struct pos
+{
+    enum pos_type type;
+    union {
+        struct expr absolute[3];
+        struct loc_str attach_name;
+        struct bone *attach;
+    };
+};
+
+struct camera
+{
+    bool roll;
+    struct pos target;
+    // mutable
+    float pos[3];
+    float up[3];
+};
+
+enum transform_op
+{
+    TR_TRANSLATE,
+    TR_SCALE,
+    TR_ROTATE,
+};
+
+#define TRANSFORM_OPS_N 3
+
+struct transform
+{
+    bool has_op[TRANSFORM_OPS_N][3];
+    struct expr op[TRANSFORM_OPS_N][3];
+    array(struct node) children;  
+};
+
+struct surface
+{
+    option(struct texture) texture;
+    struct expr color;
+};
+
+struct object
+{
+    struct surface surface;
+    struct mesh mesh;
+};
+
+enum node_type
+{
+    NODE_TRANSFORM,  
+    NODE_OBJECT,
+    NODE_CAMERA,
+    NODE_BONE,
+    NODE_LIGHT,
+};
+
+struct node
+{
+    enum node_type type;
+    union {
+        struct transform transform;
+        struct camera camera;
+        struct object object;
+        struct bone bone;
+    };
+};
+
+enum seq_inst_type
+{
+    SEQ_TIME,
+    SEQ_POV,
+    SEQ_REP,
+};
+
+#define SEQ_TIMES_INF ((unsigned int) -1)
+
+struct seq_inst
+{
+    enum seq_inst_type type;
+    union {
+        struct loc_str pov_name;
+        struct camera *pov;
+        struct {
+            unsigned int times;
+            array(struct seq_inst) children;      
+        } rep;
+        double time;
+    };
+};
+
+enum projection_type
+{
+    PROJ_PERSPECTIVE,
+    PROJ_ORTHO,
+};
+
+struct projection
+{
+    enum projection_type type;
+    union {
+        struct {
+            // l r b t n f
+            float planes[6];
+        } ortho;
+        struct {
+            // n f
+            float planes[2];
+            struct expr fov;
+        } perspective;
+    };
+};
+
+struct scene
+{
+    unsigned int fps;
+    unsigned int size[2];
+    str outfile;
+    array(struct seq_inst) seq;
+    struct camera *camera;
+    struct projection proj;
+    option(struct surface) bg;
+    option(double) live;
+    struct node root;
+};
+
+enum var_type
+{
+    VAR_NUMBER,
+    VAR_STRING,
+};
+
+struct var
+{
+    enum var_type type;
+    union {
+        str string;
+        double number;
+    };
+};
+
+struct registry
+{
+    map(str) raw_vars;
+    map(struct var) vars;
+    map(struct camera *) cameras;
+    map(struct bone *) bones;
+    struct camera *default_camera;
+};
+
+void proj_default(struct projection *proj, enum projection_type type);
+void proj_free(struct projection *proj);
+
+void surface_init(struct surface *surf);
+void surface_free(struct surface *surf);
+
+void registry_free(struct registry *reg);
+
+void scene_init(struct scene *scene);
+void scene_free(struct scene *scene);
+void scene_bind(struct scene *scene, struct source *src, struct registry *reg);
+void scene_load(struct scene *scene, struct source *src, struct draw_backend *draw);
+
+#endif