1
0
Fork 0

Major code simplification.

This commit is contained in:
david 2002-10-25 22:19:51 +00:00
parent 4c2e97be18
commit d43dfa54df

View file

@ -34,79 +34,39 @@ SG_USING_STD(ofstream);
////////////////////////////////////////////////////////////////////////
// Saved command states.
// Static helper functions.
////////////////////////////////////////////////////////////////////////
/**
* Base saved state for property commands.
*
* Since this class isn't publicly visible, it is simply an aggregate
* of all the stuff any property command needs.
* Template function to wrap a value.
*/
class PropertyCommandState : public SGCommandState
template <class T>
static inline void
do_wrap (T * value, T min, T max)
{
public:
PropertyCommandState (const SGPropertyNode * arg);
virtual SGPropertyNode * getProp () const { return _prop; }
virtual SGPropertyNode * getProp2 () const { return _prop2; }
virtual const SGPropertyNode * getValue () const
{ return _value ? _value : &_dummy_0; }
virtual const bool hasStep () const { return _step != 0; }
virtual const SGPropertyNode * getStep () const
{ return _step ? _step : &_dummy_0; }
virtual const SGPropertyNode * getMin () const { return _min; }
virtual const SGPropertyNode * getMax () const { return _max; }
virtual const SGPropertyNode * getWrap () const
{ return _wrap ? _wrap : &_dummy_0; }
virtual const SGPropertyNode * getFactor () const
{ return _factor ? _factor : &_dummy_1; }
virtual const SGPropertyNode * getSquared () const
{ return _squared ? _squared : &_dummy_0; }
virtual const SGPropertyNode * getSetting () const
{ return _setting ? _setting : &_dummy_0; }
virtual const SGPropertyNode * getOffset () const
{ return _offset ? _offset : &_dummy_0; }
private:
static SGPropertyNode _dummy_0;
static SGPropertyNode _dummy_1;
mutable SGPropertyNode * _prop;
mutable SGPropertyNode * _prop2;
const SGPropertyNode * _value;
const SGPropertyNode * _step;
const SGPropertyNode * _min;
const SGPropertyNode * _max;
const SGPropertyNode * _wrap;
const SGPropertyNode * _factor;
const SGPropertyNode * _squared;
const SGPropertyNode * _setting;
const SGPropertyNode * _offset;
};
SGPropertyNode PropertyCommandState::_dummy_0;
SGPropertyNode PropertyCommandState::_dummy_1;
PropertyCommandState::PropertyCommandState (const SGPropertyNode * arg)
: SGCommandState(arg),
_prop(fgGetNode(arg->getStringValue("property[0]", "/null"), true)),
_prop2(fgGetNode(arg->getStringValue("property[1]", "/null"), true)),
_value(arg->getNode("value")),
_step(arg->getNode("step")),
_min(arg->getNode("min")),
_max(arg->getNode("max")),
_wrap(arg->getNode("wrap")),
_factor(arg->getNode("factor")),
_squared(arg->getNode("squared")),
_setting(arg->getNode("setting")),
_offset(arg->getNode("offset"))
{
// It would be better not to do this
// every time, but it's not that big
// a deal. I don't know enough about
// C++ static initialization to fix it.
_dummy_1.setDoubleValue(1.0);
if (min >= max) { // basic sanity check
*value = min;
} else {
T range = max - min;
while (*value < min)
*value += range;
while (*value > max)
*value -= range;
}
}
static inline SGPropertyNode *
get_prop (const SGPropertyNode * arg)
{
return fgGetNode(arg->getStringValue("property[0]", "/null"), true);
}
static inline SGPropertyNode *
get_prop2 (const SGPropertyNode * arg)
{
return fgGetNode(arg->getStringValue("property[1]", "/null"), true);
}
@ -367,9 +327,7 @@ do_lighting_update (const SGPropertyNode * arg, SGCommandState ** state)
static bool
do_property_toggle (const SGPropertyNode * arg, SGCommandState ** state)
{
if (*state == 0)
*state = new PropertyCommandState(arg);
SGPropertyNode * prop = ((PropertyCommandState *)(*state))->getProp();
SGPropertyNode * prop = get_prop(arg);
return prop->setBoolValue(!prop->getBoolValue());
}
@ -383,27 +341,32 @@ do_property_toggle (const SGPropertyNode * arg, SGCommandState ** state)
static bool
do_property_assign (const SGPropertyNode * arg, SGCommandState ** state)
{
if (*state == 0)
*state = new PropertyCommandState(arg);
SGPropertyNode * prop = ((PropertyCommandState *)(*state))->getProp();
const SGPropertyNode * value =
((PropertyCommandState *)(*state))->getValue();
SGPropertyNode * prop = get_prop(arg);
const SGPropertyNode * value = arg->getNode("value");
switch (prop->getType()) {
case SGPropertyNode::BOOL:
return prop->setBoolValue(value->getBoolValue());
case SGPropertyNode::INT:
return prop->setIntValue(value->getIntValue());
case SGPropertyNode::LONG:
return prop->setLongValue(value->getLongValue());
case SGPropertyNode::FLOAT:
return prop->setFloatValue(value->getFloatValue());
case SGPropertyNode::DOUBLE:
return prop->setDoubleValue(value->getDoubleValue());
case SGPropertyNode::STRING:
return prop->setStringValue(value->getStringValue());
default:
return prop->setUnspecifiedValue(value->getStringValue());
}
}
@ -424,29 +387,26 @@ do_property_assign (const SGPropertyNode * arg, SGCommandState ** state)
static bool
do_property_adjust (const SGPropertyNode * arg, SGCommandState ** state)
{
if (*state == 0)
*state = new PropertyCommandState(arg);
bool hasStep = ((PropertyCommandState *)(*state))->hasStep();
SGPropertyNode * prop = ((PropertyCommandState *)(*state))->getProp();
const SGPropertyNode * step = ((PropertyCommandState *)(*state))->getStep();
const SGPropertyNode * offset =
((PropertyCommandState *)(*state))->getOffset();
const SGPropertyNode * factor =
((PropertyCommandState *)(*state))->getFactor();
const SGPropertyNode * min = ((PropertyCommandState *)(*state))->getMin();
const SGPropertyNode * max = ((PropertyCommandState *)(*state))->getMax();
bool wrap = ((PropertyCommandState *)(*state))->getWrap()->getBoolValue();
SGPropertyNode * prop = get_prop(arg);
const SGPropertyNode * step = arg->getChild("step");
const SGPropertyNode * offset = arg->getChild("offset");
const SGPropertyNode * factor = arg->getChild("factor");
const SGPropertyNode * min = arg->getChild("min");
const SGPropertyNode * max = arg->getChild("max");
bool wrap = arg->getBoolValue("wrap");
if (min == 0 || max == 0)
wrap = false;
double amount = 0;
if (!hasStep) {
if (step == 0)
amount = offset->getDoubleValue() * factor->getDoubleValue();
}
switch (prop->getType()) {
case SGPropertyNode::BOOL:
case SGPropertyNode::BOOL: {
bool value;
if (hasStep)
if (step != 0)
value = step->getBoolValue();
else
value = (0.0 != amount);
@ -454,94 +414,86 @@ do_property_adjust (const SGPropertyNode * arg, SGCommandState ** state)
return prop->setBoolValue(!prop->getBoolValue());
else
return true;
}
case SGPropertyNode::INT: {
int value;
if (hasStep)
if (step != 0)
value = prop->getIntValue() + step->getIntValue();
else
value = prop->getIntValue() + int(amount);
if (min && (value < min->getIntValue())) {
if (wrap && max)
value = max->getIntValue();
else
value = min->getIntValue();
}
if (max && value > max->getIntValue()) {
if (wrap && min)
value = min->getIntValue();
else
value = max->getIntValue();
if (wrap) {
do_wrap(&value, min->getIntValue(), max->getIntValue());
} else {
if (min != 0 && value < min->getIntValue())
value = min->getIntValue();
if (max != 0 && value > max->getIntValue())
value = max->getIntValue();
}
return prop->setIntValue(value);
}
case SGPropertyNode::LONG: {
long value;
if (hasStep)
if (step != 0)
value = prop->getLongValue() + step->getLongValue();
else
value = prop->getLongValue() + long(amount);
if (min && (value < min->getLongValue())) {
if (wrap && max)
value = max->getLongValue();
else
value = min->getLongValue();
}
if (max && value > max->getLongValue()) {
if (wrap && min)
value = min->getLongValue();
else
value = max->getLongValue();
if (wrap) {
do_wrap(&value, min->getLongValue(), max->getLongValue());
} else {
if (min != 0 && value < min->getLongValue())
value = min->getLongValue();
if (max != 0 && value > max->getLongValue())
value = max->getLongValue();
}
return prop->setLongValue(value);
}
case SGPropertyNode::FLOAT: {
float value;
if (hasStep)
if (step != 0)
value = prop->getFloatValue() + step->getFloatValue();
else
value = prop->getFloatValue() + float(amount);
if (min && (value < min->getFloatValue())) {
if (wrap && max)
value = max->getFloatValue();
else
value = min->getFloatValue();
}
if (max && value > max->getFloatValue()) {
if (wrap && min)
value = min->getFloatValue();
else
value = max->getFloatValue();
if (wrap) {
do_wrap(&value, min->getFloatValue(), max->getFloatValue());
} else {
if (min != 0 && value < min->getFloatValue())
value = min->getFloatValue();
if (max != 0 && value > max->getFloatValue())
value = max->getFloatValue();
}
return prop->setFloatValue(value);
}
case SGPropertyNode::DOUBLE:
case SGPropertyNode::UNSPECIFIED:
case SGPropertyNode::NONE: {
double value;
if (hasStep)
if (step != 0)
value = prop->getDoubleValue() + step->getDoubleValue();
else
value = prop->getDoubleValue() + amount;
if (min && (value < min->getDoubleValue())) {
if (wrap && max)
value = max->getDoubleValue();
else
value = min->getDoubleValue();
}
if (max && value > max->getDoubleValue()) {
if (wrap && min)
value = min->getDoubleValue();
else
value = max->getDoubleValue();
if (wrap) {
do_wrap(&value, min->getDoubleValue(), max->getDoubleValue());
} else {
if (min != 0 && value < min->getDoubleValue())
value = min->getDoubleValue();
if (max != 0 && value > max->getDoubleValue())
value = max->getDoubleValue();
}
return prop->setDoubleValue(value);
}
case SGPropertyNode::STRING: // doesn't make sense with strings
SG_LOG(SG_INPUT, SG_ALERT, "Cannot adjust a string value");
return false;
default:
SG_LOG(SG_INPUT, SG_ALERT, "Unknown value type");
return false;
}
}
@ -555,30 +507,35 @@ do_property_adjust (const SGPropertyNode * arg, SGCommandState ** state)
static bool
do_property_multiply (const SGPropertyNode * arg, SGCommandState ** state)
{
if (*state == 0)
*state = new PropertyCommandState(arg);
SGPropertyNode * prop = ((PropertyCommandState *)(*state))->getProp();
const SGPropertyNode * factor =
((PropertyCommandState *)(*state))->getFactor();
SGPropertyNode * prop = get_prop(arg);
const SGPropertyNode * factor = arg->getChild("factor");
if (factor == 0)
return true;
switch (prop->getType()) {
case SGPropertyNode::BOOL:
return prop->setBoolValue(prop->getBoolValue() &&
factor->getBoolValue());
return prop->setBoolValue(prop->getBoolValue() && factor->getBoolValue());
case SGPropertyNode::INT:
return prop->setIntValue(int(prop->getIntValue()
* factor->getDoubleValue()));
* factor->getDoubleValue()));
case SGPropertyNode::LONG:
return prop->setLongValue(long(prop->getLongValue()
* factor->getDoubleValue()));
case SGPropertyNode::FLOAT:
return prop->setFloatValue(float(prop->getFloatValue()
* factor->getDoubleValue()));
case SGPropertyNode::DOUBLE:
case SGPropertyNode::UNSPECIFIED:
case SGPropertyNode::NONE:
return prop->setDoubleValue(prop->getDoubleValue()
* factor->getDoubleValue());
default: // doesn't make sense with strings
return false;
}
@ -594,10 +551,8 @@ do_property_multiply (const SGPropertyNode * arg, SGCommandState ** state)
static bool
do_property_swap (const SGPropertyNode * arg, SGCommandState ** state)
{
if (*state == 0)
*state = new PropertyCommandState(arg);
SGPropertyNode * prop1 = ((PropertyCommandState *)(*state))->getProp();
SGPropertyNode * prop2 = ((PropertyCommandState *)(*state))->getProp2();
SGPropertyNode * prop1 = get_prop(arg);
SGPropertyNode * prop2 = get_prop2(arg);
// FIXME: inefficient
const string & tmp = prop1->getStringValue();
@ -617,23 +572,16 @@ do_property_swap (const SGPropertyNode * arg, SGCommandState ** state)
static bool
do_property_scale (const SGPropertyNode * arg, SGCommandState ** state)
{
if (*state == 0)
*state = new PropertyCommandState(arg);
SGPropertyNode * prop = ((PropertyCommandState *)(*state))->getProp();
double setting =
((PropertyCommandState *)(*state))->getSetting()->getDoubleValue();
double offset =
((PropertyCommandState *)(*state))->getOffset()->getDoubleValue();
double factor =
((PropertyCommandState *)(*state))->getFactor()->getDoubleValue();
bool squared =
((PropertyCommandState *)(*state))->getSquared()->getBoolValue();
SGPropertyNode * prop = get_prop(arg);
double setting = arg->getDoubleValue("setting");
double offset = arg->getDoubleValue("offset", 0.0);
double factor = arg->getDoubleValue("factor", 1.0);
bool squared = arg->getBoolValue("squared", false);
if (squared)
setting = (setting < 0 ? -1 : 1) * setting * setting;
double result = (setting + offset) * factor;
return prop->setDoubleValue(result);
return prop->setDoubleValue((setting + offset) * factor);
}