From: Michel Pollet <buserror@gmail.com>
Date: Fri, 15 Jun 2012 08:19:05 +0000 (+0100)
Subject: c3object: Implements 'hidden' objects
X-Git-Url: http://git.rot13.org/?a=commitdiff_plain;h=15c1e7379018f38a5aed98f60be7e5b6135b1a0f;p=simavr

c3object: Implements 'hidden' objects

Objects and geometry can be hidden from specific c3context_views
using a bitfield

Signed-off-by: Michel Pollet <buserror@gmail.com>
---

diff --git a/examples/shared/libc3/src/c3object.c b/examples/shared/libc3/src/c3object.c
index 1243e0d..69972a3 100644
--- a/examples/shared/libc3/src/c3object.c
+++ b/examples/shared/libc3/src/c3object.c
@@ -21,6 +21,7 @@
 
 
 #include "c3object.h"
+#include "c3context.h"
 #include "c3driver_object.h"
 
 void
@@ -69,8 +70,16 @@ _c3object_get_geometry(
 		const c3driver_object_t * d,
 		c3geometry_array_p out)
 {
-	for (int oi = 0; oi < o->geometry.count; oi++)
-		c3geometry_array_add(out, o->geometry.e[oi]);
+	// if this object is not visible in this view, exit
+	// there will be no geometry, so no drawing
+	uint16_t viewmask = (1 << o->context->current);
+	if (o->hidden & viewmask)
+		return;
+	for (int oi = 0; oi < o->geometry.count; oi++) {
+		c3geometry_p g = o->geometry.e[oi];
+		if (!(g->hidden & viewmask))
+			c3geometry_array_add(out, g);
+	}
 	for (int oi = 0; oi < o->objects.count; oi++)
 		c3object_get_geometry(o->objects.e[oi], out);
 }
diff --git a/examples/shared/libc3/src/c3object.h b/examples/shared/libc3/src/c3object.h
index 57f16da..b5ec883 100644
--- a/examples/shared/libc3/src/c3object.h
+++ b/examples/shared/libc3/src/c3object.h
@@ -46,7 +46,7 @@ DECLARE_C_ARRAY(struct c3object_t*, c3object_array, 4);
 typedef struct c3object_t {
 	str_p 				name;	//! optional name
 	int					dirty : 1, 
-						visible : 1 /* TODO: Implement visible */;
+						hidden : 8 /* hidden bit mask, related to c3context's views */;
 	struct c3context_t * context; //! context this object is attached to
 	struct c3object_t * parent;		//! Parent object
 	const struct c3driver_object_t ** driver;	//! Driver stack