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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#include "CameraController.h"
#include "Sim/Misc/GlobalConstants.h"
#include "Sim/Misc/GlobalSynced.h"
#include "System/Config/ConfigHandler.h"
CONFIG(float, UseDistToGroundForIcons).defaultValue(0.95f);
CCameraController::CCameraController()
{
// switchVal:
// * 1.0 = 0 degree = overview
// * 0.0 = 90 degree = first person
switchVal = configHandler->GetFloat("UseDistToGroundForIcons");
scrollSpeed = 1;
fov = 45.0f;
pixelSize = 1.0f;
enabled = true;
pos = float3(gs->mapx * 0.5f * SQUARE_SIZE, 1000.f, gs->mapy * 0.5f * SQUARE_SIZE); // center map
dir = FwdVector;
}
bool CCameraController::SetStateBool(const StateMap& sm,
const std::string& name, bool& var)
{
StateMap::const_iterator it = sm.find(name);
if (it != sm.end()) {
const float value = it->second;
var = (value > 0.0f);
return true;
}
return false;
}
bool CCameraController::SetStateFloat(const StateMap& sm,
const std::string& name, float& var)
{
StateMap::const_iterator it = sm.find(name);
if (it != sm.end()) {
const float value = it->second;
var = value;
return true;
}
return false;
}
// Uses distance to ground for large angles (near 90 degree),
// and distance to unit for flat angles (near 0 degree),
// when comparing the camera direction to the map surface,
// assuming the map is flat.
bool CCameraController::GetUseDistToGroundForIcons() {
const float3& dir = GetDir().UnsafeNormalize();
const float dot = std::min(1.0f, std::max(0.0f, math::fabs(dir.dot(UpVector))));
if (dot < switchVal) {
// flat angle (typical for first person camera)
return false;
} else {
// steep angle (typical for overhead camera)
return true;
}
}
bool CCameraController::SetState(const StateMap& sm)
{
SetStateFloat(sm, "fov", fov);
SetStateFloat(sm, "px", pos.x);
SetStateFloat(sm, "py", pos.y);
SetStateFloat(sm, "pz", pos.z);
SetStateFloat(sm, "dx", dir.x);
SetStateFloat(sm, "dy", dir.y);
SetStateFloat(sm, "dz", dir.z);
return true;
}
void CCameraController::GetState(StateMap& sm) const
{
sm["fov"] = fov;
sm["px"] = pos.x;
sm["py"] = pos.y;
sm["pz"] = pos.z;
sm["dx"] = dir.x;
sm["dy"] = dir.y;
sm["dz"] = dir.z;
}
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