D:/Timo/Visualisierung/LU/Aufgabe1/src/GLView.cpp

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#include "GLView.h"

#include <QFile>
#include <QDebug>

const int getNextPowerOfTwo(const int number)
{
        int powerOfTwoNumber = 1;

        while(powerOfTwoNumber < number)
                powerOfTwoNumber = powerOfTwoNumber * 2;

        return powerOfTwoNumber;
};

VolumeDesc::VolumeDesc()
{
        volumeTexture = 0;
        hasChanged = false;
}

void VolumeDesc::set(GLuint realWidth, GLuint realHeight, GLuint realDepth)
{
        this->realWidth = realWidth;
        this->realHeight = realHeight;
        this->realDepth = realDepth;
        width = getNextPowerOfTwo(realWidth);
        height = getNextPowerOfTwo(realHeight);
        depth = getNextPowerOfTwo(realDepth);
        xOffset = (width - realWidth) / 2;
        yOffset = (height - realHeight) / 2;
        zOffset = (depth - realDepth) / 2;
        xNormOffset = (GLfloat)(width - realWidth) / (width * 2);
        yNormOffset = (GLfloat)(height - realHeight) / (height * 2);
        zNormOffset = (GLfloat)(depth - realDepth) / (depth * 2);
        xNormLength = (GLfloat)realWidth / width;
        yNormLength = (GLfloat)realHeight / height;
        zNormLength = (GLfloat)realDepth / depth;
        maxSideLength = max(max(realWidth, realHeight), realDepth);
        stepDist = 1.0f / maxSideLength;

        qDebug() << "maxSideLength: " << maxSideLength;
        qDebug() << "stepDist: " << stepDist;

        hasChanged = true;
}

TransferFunctionDesc::TransferFunctionDesc()
{
        transferFunction = new unsigned int[4096];

        hasChanged = true;
}

TransferFunctionDesc::~TransferFunctionDesc()
{
        delete [] transferFunction;
}

StateDesc::StateDesc()
{
        shaderIndex = 0;
        shaderChanged = false;
}

void StateDesc::setShaderIndex(int shaderIndex)
{
        this->shaderIndex = shaderIndex;
        shaderChanged = true;
}

void TransferFunctionDesc::set(unsigned int *transferFunction, int length)
{
        //qDebug() << "last from transfer function" << transferFunction[length - 1] << " | length: " << length;
        memcpy(this->transferFunction, transferFunction, length * 4);
        hasChanged = true;
}

GLView::GLView()
{
}

void GLView::setData(QGLWidget *parent, VolumeDesc *volumeDesc, TransferFunctionDesc *transferFunctionDesc, StateDesc *stateDesc)
{
        this->parent = parent;
        this->volumeDesc = volumeDesc;
        this->transferFunctionDesc = transferFunctionDesc;
        this->stateDesc = stateDesc;
}

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