Campbell Barton
65ec7ec524
BF-admins agree to remove header information that isn't useful, to reduce noise. - BEGIN/END license blocks Developers should add non license comments as separate comment blocks. No need for separator text. - Contributors This is often invalid, outdated or misleading especially when splitting files. It's more useful to git-blame to find out who has developed the code. See P901 for script to perform these edits.
138 lines
3.8 KiB
C++
138 lines
3.8 KiB
C++
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "GHOST_NDOFManagerUnix.h"
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#include "GHOST_System.h"
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#include <spnav.h>
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#include <stdio.h>
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#include <unistd.h>
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#define SPNAV_SOCK_PATH "/var/run/spnav.sock"
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GHOST_NDOFManagerUnix::GHOST_NDOFManagerUnix(GHOST_System& sys)
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: GHOST_NDOFManager(sys),
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m_available(false)
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{
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if (access(SPNAV_SOCK_PATH, F_OK) != 0) {
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#ifdef DEBUG
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/* annoying for official builds, just adds noise and most people don't own these */
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puts("ndof: spacenavd not found");
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/* This isn't a hard error, just means the user doesn't have a 3D mouse. */
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#endif
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}
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else if (spnav_open() != -1) {
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m_available = true;
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/* determine exactly which device (if any) is plugged in */
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#define MAX_LINE_LENGTH 100
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/* look for USB devices with Logitech or 3Dconnexion's vendor ID */
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FILE *command_output = popen("lsusb | grep '046d:\\|256f:'", "r");
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if (command_output) {
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char line[MAX_LINE_LENGTH] = {0};
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while (fgets(line, MAX_LINE_LENGTH, command_output)) {
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unsigned short vendor_id = 0, product_id = 0;
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if (sscanf(line, "Bus %*d Device %*d: ID %hx:%hx", &vendor_id, &product_id) == 2)
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if (setDevice(vendor_id, product_id)) {
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break; /* stop looking once the first 3D mouse is found */
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}
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}
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pclose(command_output);
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}
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}
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}
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GHOST_NDOFManagerUnix::~GHOST_NDOFManagerUnix()
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{
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if (m_available)
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spnav_close();
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}
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bool GHOST_NDOFManagerUnix::available()
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{
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return m_available;
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}
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/*
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* Workaround for a problem where we don't enter the 'GHOST_kFinished' state,
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* this causes any proceeding event to have a very high 'dt' (time delta),
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* many seconds for eg, causing the view to jump.
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*
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* this workaround expects continuous events, if we miss a motion event,
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* immediately send a dummy event with no motion to ensure the finished state is reached.
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*/
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#define USE_FINISH_GLITCH_WORKAROUND
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/* TODO: make this available on all platforms */
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#ifdef USE_FINISH_GLITCH_WORKAROUND
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static bool motion_test_prev = false;
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#endif
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bool GHOST_NDOFManagerUnix::processEvents()
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{
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bool anyProcessed = false;
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if (m_available) {
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spnav_event e;
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#ifdef USE_FINISH_GLITCH_WORKAROUND
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bool motion_test = false;
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#endif
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while (spnav_poll_event(&e)) {
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switch (e.type) {
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case SPNAV_EVENT_MOTION:
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{
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/* convert to blender view coords */
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GHOST_TUns64 now = m_system.getMilliSeconds();
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const int t[3] = {(int)e.motion.x, (int)e.motion.y, (int)-e.motion.z};
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const int r[3] = {(int)-e.motion.rx, (int)-e.motion.ry, (int)e.motion.rz};
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updateTranslation(t, now);
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updateRotation(r, now);
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#ifdef USE_FINISH_GLITCH_WORKAROUND
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motion_test = true;
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#endif
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break;
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}
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case SPNAV_EVENT_BUTTON:
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GHOST_TUns64 now = m_system.getMilliSeconds();
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updateButton(e.button.bnum, e.button.press, now);
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break;
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}
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anyProcessed = true;
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}
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#ifdef USE_FINISH_GLITCH_WORKAROUND
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if (motion_test_prev == true && motion_test == false) {
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GHOST_TUns64 now = m_system.getMilliSeconds();
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const int v[3] = {0, 0, 0};
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updateTranslation(v, now);
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updateRotation(v, now);
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anyProcessed = true;
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}
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motion_test_prev = motion_test;
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#endif
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}
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return anyProcessed;
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}
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