# HG changeset patch
# User John Tsiombikas <nuclear@member.fsf.org>
# Date 1334321025 -10800
# Node ID 53aca477551441f4d0ef7e820bf7f79b1ed463d9
# Parent  2d0dfb5751dc240ecd52156eeca7526d9c53f3b5
clip checkbox

diff -r 2d0dfb5751dc -r 53aca4775514 src/volray.cc
--- a/src/volray.cc	Wed Apr 11 18:35:12 2012 +0300
+++ b/src/volray.cc	Fri Apr 13 15:43:45 2012 +0300
@@ -48,6 +48,7 @@
 static bool xfertex_needs_recalc = true;
 
 static float cur_z = 0.5;
+static bool clip_z;
 static float ray_step = 0.01;
 
 static Volume *volume;
@@ -64,7 +65,7 @@
 	set_uniform_int(vol_sdr, "ray_tex", 1);
 	set_uniform_int(vol_sdr, "xfer_tex", 2);
 	set_uniform_float(vol_sdr, "ray_step", ray_step);
-	set_uniform_float(vol_sdr, "zclip", cur_z);
+	set_uniform_float(vol_sdr, "zclip", 0.0);
 
 	if(!(slice_sdr = create_program_load(0, "sdr/slice.p.glsl"))) {
 		return false;
@@ -92,11 +93,17 @@
 	switch(which) {
 	case VOLRAY_ZCURSOR:
 		cur_z = val;
-		set_uniform_float(vol_sdr, "zclip", cur_z);
+		if(clip_z) {
+			set_uniform_float(vol_sdr, "zclip", cur_z);
+		}
 		post_redisplay();
 		break;
 
 	case VOLRAY_ZCLIP:
+		clip_z = val > 0.5;
+		set_uniform_float(vol_sdr, "zclip", clip_z ? cur_z : 0.0);
+		post_redisplay();
+		break;
 
 	default:
 		break;
@@ -109,6 +116,10 @@
 	case VOLRAY_ZCURSOR:
 		return cur_z;
 
+	case VOLRAY_ZCLIP:
+		return clip_z > 0.5 ? 1.0 : 0.0;
+		break;
+
 	default:
 		break;
 	}
diff -r 2d0dfb5751dc -r 53aca4775514 src/volray.h
--- a/src/volray.h	Wed Apr 11 18:35:12 2012 +0300
+++ b/src/volray.h	Fri Apr 13 15:43:45 2012 +0300
@@ -9,7 +9,8 @@
 Volume *volray_getvolume();
 
 enum {
-	VOLRAY_ZCURSOR
+	VOLRAY_ZCURSOR,
+	VOLRAY_ZCLIP
 };
 
 void volray_setvalue(int which, float val);