C++ (Cpp) Coordinates::clear Examples

Example #1

File: Clipping.hpp Project: nogenem/Computacao-Grafica-2015-2

void Clipping::clipBottom(Coordinates& input, Coordinates& output){
    if(output.size() > 0)
        output.clear();
    if(input.size() == 0)
        return;

    double clipY = m_w->minY;
    input.push_back(input[0]);
    for(unsigned int i = 0; i < input.size()-1; i++){
        Coordinate c0 = input[i];
        Coordinate c1 = input[i+1];

        //Caso 1: out -> out
        if(c0.y < clipY && c1.y < clipY){}

        //Caso 2: in -> in
        if(c0.y >= clipY && c1.y >= clipY)
            output.push_back(c1);

        double y = clipY;
        double m = (c1.x-c0.x)/(c1.y-c0.y);
        double x = m * (y-c0.y) + c0.x;

        //Caso 3: in -> out
        if(c0.y >= clipY && c1.y < clipY)
            output.emplace_back(x,y);

        //Caso 4: out -> in
        if(c0.y < clipY && c1.y >= clipY){
            output.emplace_back(x,y);
            output.push_back(c1);
        }
    }
}

Example #2

File: Clipping.hpp Project: nogenem/Computacao-Grafica-2015-2

void Clipping::clipRight(Coordinates& input, Coordinates& output){
    if(output.size() > 0)
        output.clear();
    if(input.size() == 0)
        return;

    double clipX = m_w->maxX;
    input.push_back(input[0]);
    for(unsigned int i = 0; i < input.size()-1; i++){
        Coordinate c0 = input[i];
        Coordinate c1 = input[i+1];

        //Caso 1: out -> out
        if(c0.x >= clipX && c1.x >= clipX){}

        //Caso 2: in -> in
        if(c0.x < clipX && c1.x < clipX)
            output.push_back(c1);

        double x = clipX;
        double m = (c1.y-c0.y)/(c1.x-c0.x);
        double y = m * (x-c0.x) + c0.y;

        //Caso 3: in -> out
        if(c0.x < clipX && c1.x >= clipX)
            output.emplace_back(x,y);

        //Caso 4: out -> in
        if(c0.x >= clipX && c1.x < clipX){
            output.emplace_back(x,y);
            output.push_back(c1);
        }
    }
}

Example #3

File: Coordinates_test.cpp Project: jonaswitt/nestk

void Coordinates_test::
t_readwrite()
{
    Coordinates c;
    c.clear();
    QCOMPARE(c.count(), 0);
    c << 1.0 << 3.0;
    c.clear();
    QCOMPARE(c.count(), 0);
    c << 1.0 << 3.0;
    c.erase(c.begin(), c.end());
    QCOMPARE(c.count(), 0);
    c << 1.0 << 0.0;
    Coordinates::iterator i= c.erase(c.begin());
    QCOMPARE(*i, 0.0);
    i= c.insert(c.end(), 1.0);
    QCOMPARE(*i, 1.0);
    QCOMPARE(c.count(), 2);
    c.pop_back();
    QCOMPARE(c.count(), 1);   // 0
    QCOMPARE(c[0], 0.0);
    c.push_back(2.0);
    QCOMPARE(c.count(), 2);
    c.append(3.0);
    QCOMPARE(c.count(), 3);   // 0, 2, 3
    QCOMPARE(c[2], 3.0);
    c.insert(0, 4.0);
    QCOMPARE(c[0], 4.0);
    QCOMPARE(c[3], 3.0);
    c.insert(c.count(), 5.0);
    QCOMPARE(c.count(), 5);   // 4, 0, 2, 3, 5
    QCOMPARE(c[4], 5.0);
    c.move(4, 0);
    QCOMPARE(c.count(), 5);   // 5, 4, 0, 2, 3
    QCOMPARE(c[0], 5.0);
    c.pop_front();
    QCOMPARE(c.count(), 4);
    QCOMPARE(c[0], 4.0);
    c.prepend(6.0);
    QCOMPARE(c.count(), 5);   // 6, 4, 0, 2, 3
    QCOMPARE(c[0], 6.0);
    c.push_front(7.0);
    QCOMPARE(c.count(), 6);
    QCOMPARE(c[0], 7.0);
    c.removeAt(1);
    QCOMPARE(c.count(), 5);   // 7, 4, 0, 2, 3
    QCOMPARE(c[1], 4.0);
    c.removeFirst();
    QCOMPARE(c.count(), 4);   // 4, 0, 2, 3
    QCOMPARE(c[0], 4.0);
    c.removeLast();
    QCOMPARE(c.count(), 3);
    QCOMPARE(c.last(), 2.0);
    c.replace(2, 8.0);
    QCOMPARE(c.count(), 3);   // 4, 0, 8
    QCOMPARE(c[2], 8.0);
    c.swap(0, 2);
    QCOMPARE(c[2], 4.0);
    double d= c.takeAt(2);
    QCOMPARE(c.count(), 2);   // 8, 0
    QCOMPARE(d, 4.0);
    double d2= c.takeFirst();
    QCOMPARE(c.count(), 1);   // 0
    QCOMPARE(d2, 8.0);
    double d3= c.takeLast();
    QVERIFY(c.isEmpty()); \
    QCOMPARE(d3, 0.0);
}//t_readwrite