Panda3D
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00001 // Filename: virtualMouse.cxx 00002 // Created by: drose (12Mar02) 00003 // 00004 //////////////////////////////////////////////////////////////////// 00005 // 00006 // PANDA 3D SOFTWARE 00007 // Copyright (c) Carnegie Mellon University. All rights reserved. 00008 // 00009 // All use of this software is subject to the terms of the revised BSD 00010 // license. You should have received a copy of this license along 00011 // with this source code in a file named "LICENSE." 00012 // 00013 //////////////////////////////////////////////////////////////////// 00014 00015 #include "virtualMouse.h" 00016 #include "dataNodeTransmit.h" 00017 00018 TypeHandle VirtualMouse::_type_handle; 00019 00020 //////////////////////////////////////////////////////////////////// 00021 // Function: VirtualMouse::Constructor 00022 // Access: Published 00023 // Description: 00024 //////////////////////////////////////////////////////////////////// 00025 VirtualMouse:: 00026 VirtualMouse(const string &name) : 00027 DataNode(name) 00028 { 00029 _pixel_xy_output = define_output("pixel_xy", EventStoreVec2::get_class_type()); 00030 _pixel_size_output = define_output("pixel_size", EventStoreVec2::get_class_type()); 00031 _xy_output = define_output("xy", EventStoreVec2::get_class_type()); 00032 _button_events_output = define_output("button_events", ButtonEventList::get_class_type()); 00033 00034 _pixel_xy = new EventStoreVec2(LPoint2(0.0f, 0.0f)); 00035 _pixel_size = new EventStoreVec2(LPoint2(0.0f, 0.0f)); 00036 _xy = new EventStoreVec2(LPoint2(0.0f, 0.0f)); 00037 _button_events = new ButtonEventList; 00038 _next_button_events = new ButtonEventList; 00039 00040 _mouse_x = 0; 00041 _mouse_y = 0; 00042 _win_width = 100; 00043 _win_height = 100; 00044 _mouse_on = false; 00045 } 00046 00047 //////////////////////////////////////////////////////////////////// 00048 // Function: VirtualMouse::set_mouse_pos 00049 // Access: Published 00050 // Description: Sets the current mouse pixel location, where (0,0) is 00051 // the upper left, and (width-1, height-1) is the lower 00052 // right pixel of the virtual window. 00053 //////////////////////////////////////////////////////////////////// 00054 void VirtualMouse:: 00055 set_mouse_pos(int x, int y) { 00056 _mouse_x = x; 00057 _mouse_y = y; 00058 } 00059 00060 //////////////////////////////////////////////////////////////////// 00061 // Function: VirtualMouse::set_window_size 00062 // Access: Published 00063 // Description: Sets the size of the "window" in which the mouse 00064 // rolls. This changes the meaning of the values passed 00065 // to set_mouse_pos(). 00066 //////////////////////////////////////////////////////////////////// 00067 void VirtualMouse:: 00068 set_window_size(int width, int height) { 00069 _win_width = width; 00070 _win_height = height; 00071 } 00072 00073 //////////////////////////////////////////////////////////////////// 00074 // Function: VirtualMouse::set_mouse_on 00075 // Access: Published 00076 // Description: Sets whether the mouse should appear to be within the 00077 // window or not. If this is true, the mouse is within 00078 // the window; if false, the mouse is not within the 00079 // window (and set_mouse_pos() means nothing). 00080 //////////////////////////////////////////////////////////////////// 00081 void VirtualMouse:: 00082 set_mouse_on(bool flag) { 00083 _mouse_on = flag; 00084 } 00085 00086 //////////////////////////////////////////////////////////////////// 00087 // Function: VirtualMouse::press_button 00088 // Access: Published 00089 // Description: Simulates a mouse or keyboard button being depressed. 00090 // This should be followed up by a call to 00091 // release_button() sometime later (possibly 00092 // immediately). 00093 //////////////////////////////////////////////////////////////////// 00094 void VirtualMouse:: 00095 press_button(ButtonHandle button) { 00096 _next_button_events->add_event(ButtonEvent(button, ButtonEvent::T_down)); 00097 } 00098 00099 //////////////////////////////////////////////////////////////////// 00100 // Function: VirtualMouse::release_button 00101 // Access: Published 00102 // Description: Simulates the button being released. This should 00103 // follow a previous call to press_button(). 00104 //////////////////////////////////////////////////////////////////// 00105 void VirtualMouse:: 00106 release_button(ButtonHandle button) { 00107 _next_button_events->add_event(ButtonEvent(button, ButtonEvent::T_up)); 00108 } 00109 00110 //////////////////////////////////////////////////////////////////// 00111 // Function: VirtualMouse::do_transmit_data 00112 // Access: Protected, Virtual 00113 // Description: The virtual implementation of transmit_data(). This 00114 // function receives an array of input parameters and 00115 // should generate an array of output parameters. The 00116 // input parameters may be accessed with the index 00117 // numbers returned by the define_input() calls that 00118 // were made earlier (presumably in the constructor); 00119 // likewise, the output parameters should be set with 00120 // the index numbers returned by the define_output() 00121 // calls. 00122 //////////////////////////////////////////////////////////////////// 00123 void VirtualMouse:: 00124 do_transmit_data(DataGraphTraverser *, const DataNodeTransmit &, 00125 DataNodeTransmit &output) { 00126 // Swap in the button events, and clear them for next time. 00127 PT(ButtonEventList) events = _button_events; 00128 _button_events = _next_button_events; 00129 _next_button_events = events; 00130 _next_button_events->clear(); 00131 output.set_data(_button_events_output, EventParameter(_button_events)); 00132 00133 _pixel_size->set_value(LPoint2(_win_width, _win_height)); 00134 output.set_data(_pixel_size_output, EventParameter(_pixel_size)); 00135 00136 if (_mouse_on) { 00137 // The mouse is within the window. 00138 _pixel_xy->set_value(LPoint2(_mouse_x, _mouse_y)); 00139 output.set_data(_pixel_xy_output, EventParameter(_pixel_xy)); 00140 00141 // Normalize pixel motion to range [-1,1]. 00142 PN_stdfloat xf = (2.0f * (PN_stdfloat)_mouse_x) / (PN_stdfloat)_win_width - 1.0f; 00143 PN_stdfloat yf = 1.0f - (2.0f * (PN_stdfloat)_mouse_y) / (PN_stdfloat)_win_height; 00144 _xy->set_value(LPoint2(xf, yf)); 00145 output.set_data(_xy_output, EventParameter(_xy)); 00146 } 00147 }