cycloidmodifier.cpp

// © Copyright 2010 - 2016 BlackTopp Studios Inc.
/* This file is part of The Mezzanine Engine.

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/*
 -----------------------------------------------------------------------------
 This source file is part of ogre-procedural

 For the latest info, see http://code.google.com/p/ogre-procedural/

 Copyright (c) 2010-2013 Michael Broutin

 Permission is hereby granted, free of charge, to any person obtaining a copy
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 */
#ifndef _graphicsproceduralcycloidmodifier_cpp
#define _graphicsproceduralcycloidmodifier_cpp

#include "Graphics/Procedural/Texture/cycloidmodifier.h"

#include "MathTools/mathtools.h"

#include "exception.h"

namespace Mezzanine
{
    namespace Graphics
    {
        namespace Procedural
        {
            CycloidModifier::CycloidModifier() :
                CycloidColour(1.0,1.0,1.0,1.0),
                CycloidCenter(0.5,0.5),
                CycloidPenSize(1),
                Parameter_R(0),
                Parameter_r(0),
                Parameter_d(0),
                Parameter_e(0)
                { this->SetCycloidType(CycloidModifier::CT_Hypocycloid); }

            CycloidModifier::~CycloidModifier()
                {  }

            void CycloidModifier::ProcessHypocycloid(const Integer XPos, const Integer YPos, const Real Step, TextureBuffer& Buffer)
            {
                Integer CurrX = 0;
                Integer CurrY = 0;
                Real Phi = 0;

                Integer SignedX = XPos + static_cast<Integer>( MathTools::Floor( this->Parameter_R + 0.5 ) );
                Integer SignedY = YPos;
                do
                {
                    Real DeltaX = ( this->Parameter_R - this->Parameter_r ) * MathTools::Cos(Phi) + this->Parameter_r * MathTools::Cos( ( ( this->Parameter_R - this->Parameter_r ) / this->Parameter_r ) * Phi );
                    Real DeltaY = ( this->Parameter_R - this->Parameter_r ) * MathTools::Sin(Phi) - this->Parameter_r * MathTools::Sin( ( ( this->Parameter_R - this->Parameter_r ) / this->Parameter_r ) * Phi );

                    CurrX = XPos + static_cast<Integer>( MathTools::Floor( DeltaX + 0.5 ) );
                    CurrY = YPos - static_cast<Integer>( MathTools::Floor( DeltaY + 0.5 ) );
                    this->Paint(CurrX,CurrY,Step,Buffer);

                    Phi += Step;
                }
                while( !( SignedX == CurrX && SignedY == CurrY && Phi < 100.0 * MathTools::GetPi() ) || Phi < MathTools::GetTwoPi() );
            }

            void CycloidModifier::ProcessHypotrochoid(const Integer XPos, const Integer YPos, const Real Step, TextureBuffer& Buffer)
            {
                Integer CurrX = 0;
                Integer CurrY = 0;
                Real Phi = 0;

                Integer SignedX = XPos + static_cast<Integer>( MathTools::Floor( ( this->Parameter_R - this->Parameter_r ) + this->Parameter_d + 0.5 ) );
                Integer SignedY = YPos;
                do
                {
                    Real DeltaX = ( this->Parameter_R - this->Parameter_r ) * MathTools::Cos(Phi) + this->Parameter_d * MathTools::Cos( ( ( this->Parameter_R - this->Parameter_r ) / this->Parameter_r ) * Phi);
                    Real DeltaY = ( this->Parameter_R - this->Parameter_r ) * MathTools::Sin(Phi) - this->Parameter_d * MathTools::Sin( ( ( this->Parameter_R - this->Parameter_r ) / this->Parameter_r ) * Phi);

                    CurrX = XPos + static_cast<Integer>( MathTools::Floor( DeltaX + 0.5 ) );
                    CurrY = YPos - static_cast<Integer>( MathTools::Floor( DeltaY + 0.5 ) );
                    this->Paint(CurrX,CurrY,Step,Buffer);

                    Phi += Step;
                }
                while( !( SignedX == CurrX && SignedY == CurrY && Phi < 100.0 * MathTools::GetPi() ) || Phi < MathTools::GetTwoPi() );
            }

            void CycloidModifier::ProcessEpicycloid(const Integer XPos, const Integer YPos, const Real Step, TextureBuffer& Buffer)
            {
                Integer CurrX = 0;
                Integer CurrY = 0;
                Real Phi = 0;

                Integer SignedX = XPos + static_cast<Integer>( MathTools::Floor( (this->Parameter_R + this->Parameter_r) - this->Parameter_r + 0.5 ) );
                Integer SignedY = YPos;
                do
                {
                    Real DeltaX = ( this->Parameter_R + this->Parameter_r ) * MathTools::Cos(Phi) - this->Parameter_r * MathTools::Cos( ( (this->Parameter_R + this->Parameter_r) / this->Parameter_r) * Phi);
                    Real DeltaY = ( this->Parameter_R + this->Parameter_r ) * MathTools::Sin(Phi) - this->Parameter_r * MathTools::Sin( ( (this->Parameter_R + this->Parameter_r) / this->Parameter_r) * Phi);

                    CurrX = XPos + static_cast<Integer>( MathTools::Floor( DeltaX + 0.5 ) );
                    CurrY = YPos - static_cast<Integer>( MathTools::Floor( DeltaY + 0.5 ) );
                    this->Paint(CurrX,CurrY,Step,Buffer);

                    Phi += Step;
                }
                while( !( SignedX == CurrX && SignedY == CurrY && Phi < 100.0 * MathTools::GetPi() ) || Phi < MathTools::GetTwoPi() );
            }

            void CycloidModifier::ProcessEpitrochoid(const Integer XPos, const Integer YPos, const Real Step, TextureBuffer& Buffer)
            {
                Integer CurrX = 0;
                Integer CurrY = 0;
                Real Phi = 0;

                Integer SignedX = XPos + static_cast<Integer>( MathTools::Floor( (this->Parameter_R + this->Parameter_r) - this->Parameter_d + 0.5 ) );
                Integer SignedY = YPos;
                do
                {
                    Real DeltaX = ( this->Parameter_R + this->Parameter_r ) * MathTools::Cos(Phi) - this->Parameter_d * MathTools::Cos( ( (this->Parameter_R + this->Parameter_r) / this->Parameter_r ) * Phi);
                    Real DeltaY = ( this->Parameter_R + this->Parameter_r ) * MathTools::Sin(Phi) - this->Parameter_d * MathTools::Sin( ( (this->Parameter_R + this->Parameter_r) / this->Parameter_r ) * Phi);

                    CurrX = XPos + static_cast<Integer>( MathTools::Floor( DeltaX + 0.5 ) );
                    CurrY = YPos - static_cast<Integer>( MathTools::Floor( DeltaY + 0.5 ) );
                    this->Paint(CurrX,CurrY,Step,Buffer);

                    Phi += Step;
                }
                while( !( SignedX == CurrX && SignedY == CurrY && Phi < 100.0 * MathTools::GetPi() ) || Phi < MathTools::GetTwoPi() );
            }

            void CycloidModifier::ProcessRoseCurve(const Integer XPos, const Integer YPos, const Real Step, TextureBuffer& Buffer)
            {
                Integer CurrX = 0;
                Integer CurrY = 0;
                Real t = 0;
                Real k = this->Parameter_r / this->Parameter_d;
                Real ActualStep = Step / 10.0;

                //Integer SignedX = XPos;
                //Integer SignedY = YPos;
                do
                {
                    Real DeltaX = this->Parameter_R * MathTools::Cos(k * t) * MathTools::Sin(t);
                    Real DeltaY = this->Parameter_R * MathTools::Cos(k * t) * MathTools::Cos(t);

                    CurrX = XPos + static_cast<Integer>( MathTools::Floor( DeltaX + 0.5 ) );
                    CurrY = YPos - static_cast<Integer>( MathTools::Floor( DeltaY + 0.5 ) );
                    this->Paint(CurrX,CurrY,ActualStep,Buffer);

                    t += ActualStep;
                }
                while( t <= MathTools::GetTwoPi() );
            }

            void CycloidModifier::ProcessLissajousCurve(const Integer XPos, const Integer YPos, const Real Step, TextureBuffer& Buffer)
            {
                Integer CurrX = 0;
                Integer CurrY = 0;
                Real t = 0;
                Real ActualStep = Step / 10.0;

                //Integer SignedX = XPos;
                //Integer SignedY = YPos;
                do
                {
                    Real DeltaX = this->Parameter_R * MathTools::Sin( this->Parameter_r * t + this->Parameter_e );
                    Real DeltaY = this->Parameter_R * MathTools::Cos( this->Parameter_d * t + this->Parameter_e );

                    CurrX = XPos + static_cast<Integer>( MathTools::Floor( DeltaX + 0.5 ) );
                    CurrY = YPos - static_cast<Integer>( MathTools::Floor( DeltaY + 0.5 ) );
                    this->Paint(CurrX,CurrY,ActualStep,Buffer);

                    t += ActualStep;
                }
                while( t <= MathTools::GetTwoPi() );
            }

            void CycloidModifier::Paint(const Integer XPos, const Integer YPos, const Real Step, TextureBuffer& Buffer)
            {
                if( this->CycloidPenSize == 1 ) {
                    if( XPos < 0 || YPos < 0 || XPos >= static_cast<Integer>( Buffer.GetWidth() ) || YPos >= static_cast<Integer>( Buffer.GetHeight() ) ) {
                        return;
                    }
                    Buffer.SetPixel(XPos,YPos,this->CycloidColour);
                }else{
                    for( Real Phi = 0 ; Phi <= MathTools::GetTwoPi() ; Phi += Step )
                    {
                        Real DeltaX = MathTools::Cos(Phi);
                        Real DeltaY = MathTools::Sin(Phi);
                        for( Whole r = 0 ; r < this->CycloidPenSize ; ++r )
                        {
                            Integer CurrX = XPos + static_cast<Integer>( MathTools::Floor( static_cast<Real>(r) * DeltaX + 0.5 ) );
                            Integer CurrY = YPos - static_cast<Integer>( MathTools::Floor( static_cast<Real>(r) * DeltaY + 0.5 ) );
                            if( CurrX >= 0 && CurrY >= 0 && CurrX < static_cast<Integer>( Buffer.GetWidth() ) && CurrY < static_cast<Integer>( Buffer.GetHeight() ) ) {
                                Buffer.SetPixel(CurrX,CurrY,this->CycloidColour);
                            }
                        }
                    }
                }
            }

            ///////////////////////////////////////////////////////////////////////////////
            // Utility

            void CycloidModifier::Modify(TextureBuffer& Buffer)
            {
                if( this->CycloidPenSize != 0 ) {
                    if( this->Parameter_r == 0 && this->Parameter_R == 0 && this->Parameter_e == 0 && this->Parameter_d == 0 ) {
                        MEZZ_EXCEPTION(ExceptionBase::INVALID_STATE_EXCEPTION,"No parameters have been set for Cycloid rendering.");
                    }

                    Integer XPos = static_cast<Integer>( static_cast<Real>( Buffer.GetWidth() * this->CycloidCenter.X ) );
                    Integer YPos = static_cast<Integer>( static_cast<Real>( Buffer.GetHeight() * this->CycloidCenter.Y ) );
                    Real Step = MathTools::GetPi() / static_cast<Real>( std::min( Buffer.GetHeight(), Buffer.GetWidth() ) );
                    switch( this->Type )
                    {
                        default:
                            { break; }
                        case CycloidModifier::CT_Hypocycloid:
                        {
                            this->ProcessHypocycloid(XPos,YPos,Step,Buffer);
                            break;
                        }
                        case CycloidModifier::CT_Hypotrochoid:
                        {
                            this->ProcessHypotrochoid(XPos,YPos,Step,Buffer);
                            break;
                        }
                        case CycloidModifier::CT_Epicycloid:
                        {
                            this->ProcessEpicycloid(XPos,YPos,Step,Buffer);
                            break;
                        }
                        case CycloidModifier::CT_Epitrochoid:
                        {
                            this->ProcessEpitrochoid(XPos,YPos,Step,Buffer);
                            break;
                        }
                        case CycloidModifier::CT_RoseCurve:
                        {
                            this->ProcessRoseCurve(XPos,YPos,Step,Buffer);
                            break;
                        }
                        case CycloidModifier::CT_LissajousCurve:
                        {
                            this->ProcessLissajousCurve(XPos,YPos,Step,Buffer);
                            break;
                        }
                    }
                }
            }

            String CycloidModifier::GetName() const
                { return "CycloidModifier"; }

            ///////////////////////////////////////////////////////////////////////////////
            // Configuration

            CycloidModifier& CycloidModifier::SetCycloidType(const CycloidType ToDraw)
            {
                this->Type = ToDraw;
                return *this;
            }

            CycloidModifier& CycloidModifier::SetDefaultParameters(const Whole SquareSize)
            {
                this->SetDefaultParameters(SquareSize,SquareSize);
            }

            CycloidModifier& CycloidModifier::SetDefaultParameters(const Whole TextureWidth, const Whole TextureHeight)
            {
                Real Size = static_cast<Real>( std::min( TextureWidth, TextureHeight ) );
                switch( this->Type )
                {
                    default:
                    case CycloidModifier::CT_Hypocycloid:
                    {
                        this->Parameter_R = 3.0 / 6.0 * Size;
                        this->Parameter_r = 1.0 / 6.0 * Size;
                        this->Parameter_d = 0.0;
                        this->Parameter_e = 0.0;
                        break;
                    }
                    case CycloidModifier::CT_Hypotrochoid:
                    {
                        this->Parameter_R = 5.0 / 14.0 * Size;
                        this->Parameter_r = 3.0 / 14.0 * Size;
                        this->Parameter_d = 5.0 / 14.0 * Size;
                        this->Parameter_e = 0.0;
                        break;
                    }
                    case CycloidModifier::CT_Epicycloid:
                    {
                        this->Parameter_R = 3.0 / 10.0 * Size;
                        this->Parameter_r = 1.0 / 10.0 * Size;
                        this->Parameter_d = 0.0;
                        this->Parameter_e = 0.0;
                        break;
                    }
                    case CycloidModifier::CT_Epitrochoid:
                    {
                        this->Parameter_R = 3.0 / 10.0 * Size;
                        this->Parameter_r = 1.0 / 10.0 * Size;
                        this->Parameter_d = 1.0 / 20.0 * Size;
                        this->Parameter_e = 0.0;
                        break;
                    }
                    case CycloidModifier::CT_RoseCurve:
                    {
                        this->Parameter_R = 0.5 * Size;
                        this->Parameter_r = 4.0;
                        this->Parameter_d = 1.0;
                        this->Parameter_e = 0.0;
                        break;
                    }
                    case CycloidModifier::CT_LissajousCurve:
                    {
                        this->Parameter_R = 0.5 * Size;
                        this->Parameter_r = 5.0;
                        this->Parameter_d = 4.0;
                        this->Parameter_e = MathTools::GetHalfPi();
                        break;
                    }
                }
                return *this;
            }

            CycloidModifier& CycloidModifier::SetColour(const ColourValue& Colour)
            {
                this->CycloidColour = Colour;
                return *this;
            }

            CycloidModifier& CycloidModifier::SetColour(const Real Red, const Real Green, const Real Blue, const Real Alpha)
            {
                this->CycloidColour.SetValues(Red,Green,Blue,Alpha);
                return *this;
            }

            CycloidModifier& CycloidModifier::SetCycloidCenter(const Vector2& Center)
            {
                this->CycloidCenter = Center;
                return *this;
            }

            CycloidModifier& CycloidModifier::SetCycloidCenter(const Real CenterX, const Real CenterY)
            {
                this->CycloidCenter.SetValues(CenterX,CenterY);
                return *this;
            }

            CycloidModifier& CycloidModifier::SetCycloidCenterX(const Real X)
            {
                this->CycloidCenter.X = X;
                return *this;
            }

            CycloidModifier& CycloidModifier::SetCycloidCenterY(const Real Y)
            {
                this->CycloidCenter.Y = Y;
                return *this;
            }

            CycloidModifier& CycloidModifier::SetCycloidParameter(const CycloidParameter Param, const Real Value)
            {
                switch( Param )
                {
                    case CycloidModifier::CP_Param_R:
                    {
                        this->Parameter_R = Value;
                        break;
                    }
                    case CycloidModifier::CP_Param_r:
                    {
                        this->Parameter_r = Value;
                        break;
                    }
                    case CycloidModifier::CP_Param_d:
                    {
                        this->Parameter_d = Value;
                        break;
                    }
                    case CycloidModifier::CP_Param_e:
                    {
                        this->Parameter_e = Value;
                        break;
                    }
                    case CycloidModifier::CP_Param_k:
                    {
                        switch( Type )
                        {
                            default:
                            case CycloidModifier::CT_Hypocycloid:
                            case CycloidModifier::CT_Hypotrochoid:
                            case CycloidModifier::CT_Epicycloid:
                            case CycloidModifier::CT_Epitrochoid:
                            {
                                this->Parameter_R = Value * this->Parameter_r;
                                break;
                            }
                            case CycloidModifier::CT_RoseCurve:
                            case CycloidModifier::CT_LissajousCurve:
                            {
                                this->Parameter_r = Value * this->Parameter_d;
                                break;
                            }
                        }
                        break;
                    }
                    default:
                        break;
                }
                return *this;
            }

            CycloidModifier& CycloidModifier::SetCycloidPenSize(const Real Size)
            {
                this->CycloidPenSize = Size;
                return *this;
            }
        }//Procedural
    }//Graphics
}//Mezzanine

#endif