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- /*
- * 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>
- #include <stdlib.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("%-25s", name);
- for(int i = 0; i < len; i++)
- printf("%f ", f[i]);
- printf("\n");
- }
- // gets int values from the device and prints them
- void print_infoi(ohmd_device* hmd, const char* name, int len, ohmd_int_value val)
- {
- int iv[len];
- ohmd_device_geti(hmd, val, iv);
- printf("%-25s", name);
- for(int i = 0; i < len; i++)
- printf("%d ", iv[i]);
- printf("\n");
- }
- int main(int argc, char** argv)
- {
- int device_idx = 0;
- if(argc > 1)
- device_idx = atoi(argv[1]);
- 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++){
- int device_class = 0, device_flags = 0;
- const char* device_class_s[] = {"HMD", "Controller", "Generic Tracker", "Unknown"};
- ohmd_list_geti(ctx, i, OHMD_DEVICE_CLASS, &device_class);
- ohmd_list_geti(ctx, i, OHMD_DEVICE_FLAGS, &device_flags);
- 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", ohmd_list_gets(ctx, i, OHMD_PATH));
- printf(" class: %s\n", device_class_s[device_class > OHMD_DEVICE_CLASS_GENERIC_TRACKER ? 4 : device_class]);
- printf(" flags: %02x\n", device_flags);
- printf(" null device: %s\n", device_flags & OHMD_DEVICE_FLAGS_NULL_DEVICE ? "yes" : "no");
- printf(" rotational tracking: %s\n", device_flags & OHMD_DEVICE_FLAGS_ROTATIONAL_TRACKING ? "yes" : "no");
- printf(" positional tracking: %s\n", device_flags & OHMD_DEVICE_FLAGS_POSITIONAL_TRACKING ? "yes" : "no");
- printf(" left controller: %s\n", device_flags & OHMD_DEVICE_FLAGS_LEFT_CONTROLLER ? "yes" : "no");
- printf(" right controller: %s\n\n", device_flags & OHMD_DEVICE_FLAGS_RIGHT_CONTROLLER ? "yes" : "no");
- }
- // Open specified device idx or 0 (default) if nothing specified
- printf("opening device: %d\n", device_idx);
- ohmd_device* hmd = ohmd_list_open_device(ctx, device_idx);
-
- 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);
-
- print_infoi(hmd, "control count: ", 1, OHMD_CONTROL_COUNT);
- int control_count;
- ohmd_device_geti(hmd, OHMD_CONTROL_COUNT, &control_count);
- const char* controls_fn_str[] = { "generic", "trigger", "trigger_click", "squeeze", "menu", "home",
- "analog-x", "analog-y", "anlog_press", "button-a", "button-b", "button-x", "button-y"};
- const char* controls_type_str[] = {"digital", "analog"};
- int controls_fn[64];
- int controls_types[64];
- ohmd_device_geti(hmd, OHMD_CONTROLS_HINTS, controls_fn);
- ohmd_device_geti(hmd, OHMD_CONTROLS_TYPES, controls_types);
-
- printf("%-25s", "controls:");
- for(int i = 0; i < control_count; i++){
- printf("%s (%s)%s", controls_fn_str[controls_fn[i]], controls_type_str[controls_types[i]], i == control_count - 1 ? "" : ", ");
- }
- printf("\n\n");
- // Ask for n rotation quaternions and position vectors
- for(int i = 0; i < 10000; i++){
- ohmd_ctx_update(ctx);
- // this can be used to set a different zero point
- // for rotation and position, but is not required.
- //float zero[] = {.0, .0, .0, 1};
- //ohmd_device_setf(hmd, OHMD_ROTATION_QUAT, zero);
- //ohmd_device_setf(hmd, OHMD_POSITION_VECTOR, zero);
- // get rotation and postition
- print_infof(hmd, "rotation quat:", 4, OHMD_ROTATION_QUAT);
- print_infof(hmd, "position vec: ", 3, OHMD_POSITION_VECTOR);
- // read controls
- float control_state[256];
- ohmd_device_getf(hmd, OHMD_CONTROLS_STATE, control_state);
- printf("%-25s", "controls state:");
- for(int i = 0; i < control_count; i++)
- {
- printf("%f ", control_state[i]);
- }
- puts("");
-
- ohmd_sleep(.01);
- }
- ohmd_ctx_destroy(ctx);
-
- return 0;
- }
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