Configurable Chase Camera (#188)
* ignore binaries * Add terrain probe * update camera system * change to tabs * formatting * compiles on windows 10 * use local view type enum * basic view type must always be changed * Code formatting
This commit is contained in:
Kai Lehmkuehler
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Jason Watkins
Jason Watkins
parent
1fd6400a98
commit
c0abcf729f
173
xpcPlugin/CameraCallbacks.cpp
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173
xpcPlugin/CameraCallbacks.cpp
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//
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// support.cpp
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// xpcPlugin
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//
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// Created by Kai Lehmkuehler on 14/01/2019.
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//
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#include <stdio.h>
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#include "MessageHandlers.h"
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#include "DataManager.h"
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#include "Log.h"
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#include "XPLMUtilities.h"
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#include "XPLMGraphics.h"
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#include <cmath>
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#include <cstring>
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namespace XPC
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{
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// Runway Camera Callback: Places the camera at campos.loc and points it at the aircraft, similar to a remote piloting experience.
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// Optionally, the direction of the camera can be specified by the user.
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int MessageHandlers::CamCallback_RunwayCam( XPLMCameraPosition_t * outCameraPosition, int inIsLosingControl, void *inRefcon)
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{
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if (outCameraPosition && !inIsLosingControl)
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{
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struct CameraProperties* campos = (struct CameraProperties*)inRefcon;
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// camera position
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double clat = campos->loc[0];
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double clon = campos->loc[1];
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double calt = campos->loc[2];
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double cX;
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double cY;
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double cZ;
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XPLMWorldToLocal(clat, clon, calt, &cX, &cY, &cZ);
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outCameraPosition->x = cX;
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outCameraPosition->y = cY;
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outCameraPosition->z = cZ;
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// Log::FormatLine(LOG_TRACE, "CAM", "Cam pos %f %f %f", clat, clon, calt);
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// calculate camera direction to point at the aircraft
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if(campos->direction[0] < -180)
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{
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// local aircraft position
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double x = XPC::DataManager::GetDouble(XPC::DREF_LocalX, 0);
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double y = XPC::DataManager::GetDouble(XPC::DREF_LocalY, 0);
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double z = XPC::DataManager::GetDouble(XPC::DREF_LocalZ, 0);
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// relative position vector camera to aircraft
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double dx = x - cX;
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double dy = y - cY;
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double dz = z - cZ;
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// Log::FormatLine(LOG_TRACE, "CAM", "Cam vect %f %f %f", dx, dy, dz);
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double pi = 3.141592653589793;
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// horizontal distance
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double dist = sqrt(dx*dx + dz*dz);
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outCameraPosition->pitch = atan2(dy, dist) * 180.0/pi;
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double angle = atan2(dz, dx) * 180.0/pi; // rel to pos right (pos X)
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outCameraPosition->heading = 90 + angle; // rel to north
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// Log::FormatLine(LOG_TRACE, "CAM", "Cam p %f hdg %f ", outCameraPosition->pitch, outCameraPosition->heading);
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outCameraPosition->roll = 0;
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}
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// point camera at specified direction
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else
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{
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outCameraPosition->roll = campos->direction[0];
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outCameraPosition->pitch = campos->direction[1];
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outCameraPosition->heading = campos->direction[2];
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}
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outCameraPosition->zoom = campos->zoom;
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}
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return 1;
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}
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// Chase Camera Callback: Places the camera at campos.loc RELATIVE to and MOVING with the aircraft, pointing at the specified
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// direction.
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int MessageHandlers::CamCallback_ChaseCam( XPLMCameraPosition_t * outCameraPosition, int inIsLosingControl, void *inRefcon)
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{
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if (outCameraPosition && !inIsLosingControl)
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{
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double DTR = 3.141592653589793 / 180.0;
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struct CameraProperties* campos = (struct CameraProperties*)inRefcon;
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// Camera location relative to aircraft (local axes)
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// local aircraft position
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double x = XPC::DataManager::GetDouble(XPC::DREF_LocalX, 0); // +east
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double y = XPC::DataManager::GetDouble(XPC::DREF_LocalY, 0); // +up
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double z = XPC::DataManager::GetDouble(XPC::DREF_LocalZ, 0); // +south
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// aircraft attitude - degrees
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double phi = XPC::DataManager::GetFloat(XPC::DREF_Roll, 0);
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double the = XPC::DataManager::GetFloat(XPC::DREF_Pitch, 0);
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double psi = XPC::DataManager::GetFloat(XPC::DREF_HeadingTrue, 0);
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// camera position vector with respect to aircraft CG [m] (body axes)
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double c_x = campos->loc[0]; // back
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double c_y = campos->loc[1]; // right
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double c_z = campos->loc[2]; // up
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// camera position vector in local axes - will move with aircraft if not along principal axes
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// cLocal = Leb * cBody
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// http://www.xsquawkbox.net/xpsdk/mediawiki/ScreenCoordinates
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double x_phi=c_y*cos(phi*DTR) + c_z*sin(phi*DTR);
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double y_phi=c_z*cos(phi*DTR) - c_y*sin(phi*DTR);
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double z_phi=c_x;
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double x_the=x_phi;
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double y_the=y_phi*cos(the*DTR) - z_phi*sin(the*DTR);
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double z_the=z_phi*cos(the*DTR) + y_phi*sin(the*DTR);
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double x_wrl=x_the*cos(psi*DTR) - z_the*sin(psi*DTR);
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double y_wrl=y_the ;
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double z_wrl=z_the*cos(psi*DTR) + x_the*sin(psi*DTR);
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outCameraPosition->x = x + x_wrl;
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outCameraPosition->y = y + y_wrl;
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outCameraPosition->z = z + z_wrl;
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// set direction value to -998 to keep camera pointing straight along that axis
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if(campos->direction[0] < -180)
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{
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outCameraPosition->roll = 0;
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}
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else
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{
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outCameraPosition->roll = phi + campos->direction[0];
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}
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if(campos->direction[1] < -180)
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{
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outCameraPosition->pitch = 0;
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}
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else
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{
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outCameraPosition->pitch = the + campos->direction[1];
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}
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if(campos->direction[2] < -180)
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{
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outCameraPosition->heading = 0;
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}
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else
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{
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outCameraPosition->heading = psi + campos->direction[2];
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}
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outCameraPosition->zoom = campos->zoom;
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}
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return 1;
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}
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}
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