blender/source/gameengine/Expressions/FloatValue.cpp

// FloatValue.cpp: implementation of the CFloatValue class.
/*
 * Copyright (c) 1996-2000 Erwin Coumans <coockie@acm.org>
 *
 * Permission to use, copy, modify, distribute and sell this software
 * and its documentation for any purpose is hereby granted without fee,
 * provided that the above copyright notice appear in all copies and
 * that both that copyright notice and this permission notice appear
 * in supporting documentation.  Erwin Coumans makes no
 * representations about the suitability of this software for any
 * purpose.  It is provided "as is" without express or implied warranty.
 *
 */

#include "FloatValue.h"
#include "IntValue.h"
#include "StringValue.h"
#include "BoolValue.h"
#include "ErrorValue.h"
#include "VoidValue.h"

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

CFloatValue::CFloatValue()
/*
pre: false
effect: constructs a new CFloatValue
*/
{
	m_pstrRep=NULL;
}



CFloatValue::CFloatValue(float fl)
/*
pre:
effect: constructs a new CFloatValue containing value fl
*/
{
	m_float = fl;
	m_pstrRep=NULL;
}



CFloatValue::CFloatValue(float fl,const char *name,AllocationTYPE alloctype)
/*
pre:
effect: constructs a new CFloatValue containing value fl
*/
{
	
	m_float = fl;
	SetName(name);
	if (alloctype==CValue::STACKVALUE)
	{
		CValue::DisableRefCount();

	}
	m_pstrRep=NULL;
}



CFloatValue::~CFloatValue()
/*
pre:
effect: deletes the object
*/
{
	if (m_pstrRep)
		delete m_pstrRep;
}



CValue* CFloatValue::Calc(VALUE_OPERATOR op, CValue *val)
/*
pre:
ret: a new object containing the result of applying operator op to this
	 object and val
*/
{
	//return val->CalcFloat(op, this);
	switch (op)
	{
	case VALUE_POS_OPERATOR:
		return new CFloatValue (m_float);
		break;
	case VALUE_NEG_OPERATOR:
		return new CFloatValue (-m_float);
		break;
	case VALUE_NOT_OPERATOR:
		return new CErrorValue (op2str(op) + "only allowed on booleans");
		break;
	case VALUE_AND_OPERATOR:
	case VALUE_OR_OPERATOR:
		return new CErrorValue(val->GetText() + op2str(op) + "only allowed on booleans");
		break;
	default:
		return val->CalcFinal(VALUE_FLOAT_TYPE, op, this);
		break;
	}
}



CValue* CFloatValue::CalcFinal(VALUE_DATA_TYPE dtype, VALUE_OPERATOR op, CValue *val)
/*
pre: the type of val is dtype
ret: a new object containing the result of applying operator op to val and
	 this object
*/
{
	CValue *ret;
	
	switch(dtype)
	{
	case VALUE_INT_TYPE:
		{
			switch (op)
			{
			case VALUE_MOD_OPERATOR:
				ret = new CFloatValue(fmod(((CIntValue *) val)->GetInt(), m_float));
				break;
			case VALUE_ADD_OPERATOR:
				ret = new CFloatValue(((CIntValue *) val)->GetInt() + m_float);
				break;
			case VALUE_SUB_OPERATOR:
				ret = new CFloatValue(((CIntValue *) val)->GetInt() - m_float);
				break;
			case VALUE_MUL_OPERATOR:
				ret = new CFloatValue(((CIntValue *) val)->GetInt() * m_float);
				break;
			case VALUE_DIV_OPERATOR:
				if (m_float == 0)
					ret = new CErrorValue("Division by zero");
				else
					ret = new CFloatValue (((CIntValue *) val)->GetInt() / m_float);
				break;
			case VALUE_EQL_OPERATOR:
				ret = new CBoolValue(((CIntValue *) val)->GetInt() == m_float);
				break;
			case VALUE_NEQ_OPERATOR:
				ret = new CBoolValue(((CIntValue *) val)->GetInt() != m_float);
				break;
			case VALUE_GRE_OPERATOR:
				ret = new CBoolValue(((CIntValue *) val)->GetInt() > m_float);
				break;
			case VALUE_LES_OPERATOR:
				ret = new CBoolValue(((CIntValue *) val)->GetInt() < m_float);
				break;
			case VALUE_GEQ_OPERATOR:
				ret = new CBoolValue(((CIntValue *) val)->GetInt() >= m_float);
				break;
			case VALUE_LEQ_OPERATOR:
				ret = new CBoolValue(((CIntValue *) val)->GetInt() <= m_float);
				break;
			default:
				ret = new CErrorValue("illegal operator. please send a bug report.");
				break;
			}
			break;
		}
	case VALUE_EMPTY_TYPE:
	case VALUE_FLOAT_TYPE:
		{
			switch (op)
			{
			case VALUE_MOD_OPERATOR:
				ret = new CFloatValue(fmod(((CFloatValue *) val)->GetFloat(), m_float));
				break;
			case VALUE_ADD_OPERATOR:
				ret = new CFloatValue(((CFloatValue *) val)->GetFloat() + m_float);
				break;
			case VALUE_SUB_OPERATOR:
				ret = new CFloatValue(((CFloatValue *) val)->GetFloat() - m_float);
				break;
			case VALUE_MUL_OPERATOR:
				ret = new CFloatValue(((CFloatValue *) val)->GetFloat() * m_float);
				break;
			case VALUE_DIV_OPERATOR:
				if (m_float == 0)
					ret = new CErrorValue("Division by zero");
				else
					ret = new CFloatValue (((CFloatValue *) val)->GetFloat() / m_float);
				break;
			case VALUE_EQL_OPERATOR:
				ret = new CBoolValue(((CFloatValue *) val)->GetFloat() == m_float);
				break;
			case VALUE_NEQ_OPERATOR:
				ret = new CBoolValue(((CFloatValue *) val)->GetFloat() != m_float);
				break;
			case VALUE_GRE_OPERATOR:
				ret = new CBoolValue(((CFloatValue *) val)->GetFloat() > m_float);
				break;
			case VALUE_LES_OPERATOR:
				ret = new CBoolValue(((CFloatValue *) val)->GetFloat() < m_float);
				break;
			case VALUE_GEQ_OPERATOR:
				ret = new CBoolValue(((CFloatValue *) val)->GetFloat() >= m_float);
				break;
			case VALUE_LEQ_OPERATOR:
				ret = new CBoolValue(((CFloatValue *) val)->GetFloat() <= m_float);
				break;
			case VALUE_NEG_OPERATOR:
				ret = new CFloatValue (-m_float);
				break;
			case VALUE_POS_OPERATOR:
				ret = new CFloatValue (m_float);
				break;
				
			default:
				ret = new CErrorValue("illegal operator. please send a bug report.");
				break;
			}
			break;
		}
	case VALUE_STRING_TYPE:
		{
			switch(op)
			{
			case VALUE_ADD_OPERATOR:
				ret = new CStringValue(val->GetText() + GetText(),"");
				break;
			case VALUE_EQL_OPERATOR:
			case VALUE_NEQ_OPERATOR:
			case VALUE_GRE_OPERATOR:
			case VALUE_LES_OPERATOR:
			case VALUE_GEQ_OPERATOR:
			case VALUE_LEQ_OPERATOR:
				ret = new CErrorValue("[Cannot compare string with float]" + op2str(op) + GetText());
				break;
			default:
				ret =  new CErrorValue("[operator not allowed on strings]" + op2str(op) + GetText());
				break;
			}
			break;
		}
	case VALUE_BOOL_TYPE:
		ret =  new CErrorValue("[operator not valid on boolean and float]" + op2str(op) + GetText());
		break;
	case VALUE_ERROR_TYPE:
		ret = new CErrorValue(val->GetText() + op2str(op) + GetText());
		break;
	default:
		ret = new CErrorValue("illegal type. contact your dealer (if any)");
		break;
	}
	return ret;
}



void CFloatValue::SetFloat(float fl)
{
	m_float = fl;
	SetModified(true);
}



float CFloatValue::GetFloat()
/*
pre:
ret: the float stored in the object
*/
{
	return m_float;
}



double CFloatValue::GetNumber()
{
	return m_float;
}



void CFloatValue::SetValue(CValue* newval)
{ 	
	m_float = (float)newval->GetNumber(); 
	SetModified(true);
}



const STR_String & CFloatValue::GetText()
{
	if (!m_pstrRep)
		m_pstrRep = new STR_String();

	m_pstrRep->Format("%f",m_float);
	return *m_pstrRep;
}



CValue* CFloatValue::GetReplica()
{ 
	CFloatValue* replica = new CFloatValue(*this);
	replica->m_pstrRep = NULL; /* should be in CFloatValue::ProcessReplica() but its not defined, no matter */
	replica->ProcessReplica();

	return replica;
}


#ifndef DISABLE_PYTHON
PyObject* CFloatValue::ConvertValueToPython()
{
	return PyFloat_FromDouble(m_float);
}
#endif // DISABLE_PYTHON