From 383587591e887d2e76f3ff37b8ccc5308bafb687 Mon Sep 17 00:00:00 2001
From: Florian Jung <flo@windfisch.org>
Date: Tue, 17 Mar 2015 17:35:32 +0100
Subject: add OpenHMD I

---
 .gitmodules     |  3 +++
 Makefile        | 15 +++++++++++
 contrib/OpenHMD |  1 +
 simple.c        | 83 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 102 insertions(+)
 create mode 100644 .gitmodules
 create mode 160000 contrib/OpenHMD
 create mode 100644 simple.c

diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..efdd16d
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "contrib/OpenHMD"]
+	path = contrib/OpenHMD
+	url = git://github.com/OpenHMD/OpenHMD.git
diff --git a/Makefile b/Makefile
index e234fa9..20bc129 100644
--- a/Makefile
+++ b/Makefile
@@ -2,3 +2,18 @@ client2: client2.cpp lib.cpp ringbuf.h
 	g++ -std=c++11 -g client2.cpp lib.cpp -lglfw -lGLEW -lGLU -lGL `pkg-config --libs opencv` -lm  -o client2
 client: client.c
 	gcc client.c -lX11 -lXi -lXmu -lglut -lGL -lGLU -lm  -o client
+
+simple: simple.o contrib/OpenHMD/src/.libs/libopenhmd.a
+	gcc -std=gnu99 -g -O2 -o simple simple.o  contrib/OpenHMD/src/.libs/libopenhmd.a -lhidapi-libusb -lrt -lpthread -lm
+
+simple.o: simple.c
+	gcc -std=gnu99   -Wall  -DOHMD_STATIC -Icontrib/OpenHMD/include/  -g -O2  -c -o simple.o simple.c
+
+contrib/OpenHMD/src/.libs/libopenhmd.a:
+	cd contrib/OpenHMD && ./configure --enable-static=yes && make -j5
+
+clean:
+	rm -f simple.o simple
+
+distclean: clean
+	cd contrib/OpenHMD && make distclean
diff --git a/contrib/OpenHMD b/contrib/OpenHMD
new file mode 160000
index 0000000..3f60c20
--- /dev/null
+++ b/contrib/OpenHMD
@@ -0,0 +1 @@
+Subproject commit 3f60c2061e4e40c40d714724ccc05354a8a99309
diff --git a/simple.c b/simple.c
new file mode 100644
index 0000000..538d536
--- /dev/null
+++ b/simple.c
@@ -0,0 +1,83 @@
+/*
+ * OpenHMD - Free and Open Source API and drivers for immersive technology.
+ * Copyright (C) 2013 Fredrik Hultin.
+ * Copyright (C) 2013 Jakob Bornecrantz.
+ * Distributed under the Boost 1.0 licence, see LICENSE for full text.
+ */
+
+/* Simple Test */
+
+#include <openhmd.h>
+#include <stdio.h>
+
+void ohmd_sleep(double);
+
+// gets float values from the device and prints them
+void print_infof(ohmd_device* hmd, const char* name, int len, ohmd_float_value val)
+{
+	float f[len];
+	ohmd_device_getf(hmd, val, f);
+	printf("%-20s", name);
+	for(int i = 0; i < len; i++)
+		printf("%f ", f[i]);
+	printf("\n");
+}
+
+int main(int argc, char** argv)
+{
+	ohmd_context* ctx = ohmd_ctx_create();
+
+	// Probe for devices
+	int num_devices = ohmd_ctx_probe(ctx);
+	if(num_devices < 0){
+		printf("failed to probe devices: %s\n", ohmd_ctx_get_error(ctx));
+		return -1;
+	}
+
+	printf("num devices: %d\n\n", num_devices);
+
+	// Print device information
+	for(int i = 0; i < num_devices; i++){
+		printf("device %d\n", i);
+		printf("  vendor:  %s\n", ohmd_list_gets(ctx, i, OHMD_VENDOR));
+		printf("  product: %s\n", ohmd_list_gets(ctx, i, OHMD_PRODUCT));
+		printf("  path:    %s\n\n", ohmd_list_gets(ctx, i, OHMD_PATH));
+	}
+
+	// Open default device (0)
+	ohmd_device* hmd = ohmd_list_open_device(ctx, 0);
+	
+	if(!hmd){
+		printf("failed to open device: %s\n", ohmd_ctx_get_error(ctx));
+		return -1;
+	}
+
+	// Print hardware information for the opened device
+	int ivals[2];
+	ohmd_device_geti(hmd, OHMD_SCREEN_HORIZONTAL_RESOLUTION, ivals);
+	ohmd_device_geti(hmd, OHMD_SCREEN_VERTICAL_RESOLUTION, ivals + 1);
+	printf("resolution:         %i x %i\n", ivals[0], ivals[1]);
+
+	print_infof(hmd, "hsize:",            1, OHMD_SCREEN_HORIZONTAL_SIZE);
+	print_infof(hmd, "vsize:",            1, OHMD_SCREEN_VERTICAL_SIZE);
+	print_infof(hmd, "lens separation:",  1, OHMD_LENS_HORIZONTAL_SEPARATION);
+	print_infof(hmd, "lens vcenter:",     1, OHMD_LENS_VERTICAL_POSITION);
+	print_infof(hmd, "left eye fov:",     1, OHMD_LEFT_EYE_FOV);
+	print_infof(hmd, "right eye fov:",    1, OHMD_RIGHT_EYE_FOV);
+	print_infof(hmd, "left eye aspect:",  1, OHMD_LEFT_EYE_ASPECT_RATIO);
+	print_infof(hmd, "right eye aspect:", 1, OHMD_RIGHT_EYE_ASPECT_RATIO);
+	print_infof(hmd, "distortion k:",     6, OHMD_DISTORTION_K);
+
+	printf("\n");
+
+	// Ask for n rotation quaternions
+	for(int i = 0; i < 10000; i++){
+		ohmd_ctx_update(ctx);
+		print_infof(hmd, "rotation quat:", 4, OHMD_ROTATION_QUAT);
+		ohmd_sleep(.01);
+	}
+
+	ohmd_ctx_destroy(ctx);
+	
+	return 0;
+}
-- 
cgit v1.2.1