X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fmain.c;h=b7bd8a3be92a9b225abe37a74fbd8df2aedf4db9;hb=127a3f103d8ca350a3ebefd294ce02c78b7ef47c;hp=a14ea8ded2f01568528d14eeae2b4eda03b5b3ca;hpb=76a754b69167f6e6d627a3c89440f3de356b179c;p=geometrycompositor.git

diff --git a/source/main.c b/source/main.c
index a14ea8d..b7bd8a3 100644
--- a/source/main.c
+++ b/source/main.c
@@ -32,6 +32,12 @@ typedef struct CompositedWindow
 	int recreate_mask;
 } CompositedWindow;
 
+enum
+{
+	CYLINDRICAL = 1,
+	SPHERICAL
+};
+
 typedef struct CompositedMonitor
 {
 	char *name;
@@ -41,7 +47,8 @@ typedef struct CompositedMonitor
 	unsigned width;
 	unsigned height;
 	float keystone_vertical;
-	float cylinder_depth;
+	float curvature_type;
+	float curvature_depth;
 	float vertical_center;
 	float perspective;
 	unsigned vertex_buffer;
@@ -596,8 +603,8 @@ void update_monitor_vertices(CompositedScreen *screen, CompositedMonitor *monito
 	unsigned x, y;
 	unsigned i;
 	float aspect;
-	float cyl_radius;
-	float cyl_arc;
+	float curve_radius;
+	float curve_arc;
 	float sin_ksv;
 	float cos_ksv;
 	float distance;
@@ -611,10 +618,10 @@ void update_monitor_vertices(CompositedScreen *screen, CompositedMonitor *monito
 
 	aspect = (float)monitor->width/monitor->height;
 
-	if(monitor->cylinder_depth)
+	if(monitor->curvature_depth)
 	{
-		cyl_radius = (monitor->cylinder_depth*monitor->cylinder_depth+0.25f)/(2.0f*monitor->cylinder_depth);
-		cyl_arc = 2.0f*asin(0.5f/cyl_radius);
+		curve_radius = (monitor->curvature_depth*monitor->curvature_depth+0.25f)/(2.0f*monitor->curvature_depth);
+		curve_arc = 2.0f*asin(0.5f/curve_radius);
 	}
 
 	sin_ksv = monitor->keystone_vertical/sqrt(1.0f+monitor->keystone_vertical*monitor->keystone_vertical);
@@ -638,26 +645,40 @@ void update_monitor_vertices(CompositedScreen *screen, CompositedMonitor *monito
 			v[0] = (float)x/t-0.5f;
 			v[1] = ((float)y/t-0.5f)/aspect;
 			v[2] = 0;
-			if(monitor->cylinder_depth)
+			if(monitor->curvature_depth)
 			{
-				v[2] = (1.0f-cos(v[0]*cyl_arc))*cyl_radius-monitor->cylinder_depth;
-				v[0] = sin(v[0]*cyl_arc)*cyl_radius;
+				if(monitor->curvature_type==CYLINDRICAL)
+				{
+					v[2] = (1.0f-cos(v[0]*curve_arc))*curve_radius-monitor->curvature_depth;
+					v[0] = sin(v[0]*curve_arc)*curve_radius;
+				}
+				else if(monitor->curvature_type==SPHERICAL)
+				{
+					float r;
+
+					v[0] = tan(v[0]*curve_arc)*curve_radius;
+					v[1] = tan(v[1]*curve_arc)*curve_radius;
+					r = sqrt(v[0]*v[0]+v[1]*v[1]+curve_radius*curve_radius)/fabs(curve_radius);
+					v[0] /= r;
+					v[1] /= r;
+					v[2] = curve_radius-curve_radius/r-monitor->curvature_depth;
+				}
 			}
 		}
 
 	monitor->geometry_data[0] = t;
 	for(i=0; i<3; ++i)
-		monitor->geometry_data[1+i] = eye[i]*10000;
+		monitor->geometry_data[1+i] = eye[i]*4096;
 	for(y=0; y<2; ++y)
 		for(x=0; x<2; ++x)
 		{
 			i = 1+(1+y*2+x)*3;
-			monitor->geometry_data[i] = ((x-0.5f)*distance/monitor->perspective)*10000;
-			monitor->geometry_data[i+1] = (eye[1]+look[1]*distance-(y-0.5f)*look[2]*distance/monitor->perspective/aspect)*10000;
-			monitor->geometry_data[i+2] = (eye[2]+look[2]*distance+(y-0.5f)*look[1]*distance/monitor->perspective/aspect)*10000;
+			monitor->geometry_data[i] = ((x-0.5f)*distance/monitor->perspective)*4096;
+			monitor->geometry_data[i+1] = (eye[1]+look[1]*distance-(y-monitor->vertical_center)*look[2]*distance/monitor->perspective/aspect)*4096;
+			monitor->geometry_data[i+2] = (eye[2]+look[2]*distance+(y-monitor->vertical_center)*look[1]*distance/monitor->perspective/aspect)*4096;
 		}
 	for(i=0; i<(t+1)*(t+1)*3; ++i)
-		monitor->geometry_data[16+i] = vertex_data[i]*10000;
+		monitor->geometry_data[16+i] = vertex_data[i]*4096;
 
 	for(y=t; y<=t; --y)
 		for(x=t; x<=t; --x)
@@ -736,7 +757,8 @@ int initialize_monitor(Compositor *compositor, CompositedScreen *screen, XRRScre
 	XRRFreeOutputInfo(output);
 
 	monitor->keystone_vertical = 0.0f;
-	monitor->cylinder_depth = 0.0f;
+	monitor->curvature_type = CYLINDRICAL;
+	monitor->curvature_depth = 0.0f;
 	monitor->vertical_center = 0.5f;
 	monitor->perspective = 1.0f;
 
@@ -821,7 +843,7 @@ void update_geometry_correction(Compositor *compositor, CompositedScreen *screen
 	use_gl(compositor, screen);
 
 	name_ptr = names;
-	for(i=0; i*4<values_length; ++i)
+	for(i=0; i*5+4<values_length; ++i)
 	{
 		CompositedMonitor *monitor;
 
@@ -831,10 +853,11 @@ void update_geometry_correction(Compositor *compositor, CompositedScreen *screen
 		monitor = find_monitor_by_name(screen, name_ptr);
 		if(monitor)
 		{
-			monitor->keystone_vertical = values[i*4]/10000.0f;
-			monitor->cylinder_depth = values[i*4+1]/10000.0f;
-			monitor->vertical_center = values[i*4+2]/10000.0f;
-			monitor->perspective = values[i*4+3]/10000.0f;
+			monitor->keystone_vertical = values[i*5]/4096.0f;
+			monitor->curvature_type = values[i*5+1];
+			monitor->curvature_depth = values[i*5+2]/4096.0f;
+			monitor->vertical_center = values[i*5+3]/4096.0f;
+			monitor->perspective = values[i*5+4]/4096.0f;
 
 			if(monitor->enabled)
 				update_monitor_vertices(screen, monitor);