void CGeometryTool::quad(CMeshBuffer& meshBuffer, real x1, real y1, real x2, real y2, real x3, real y3, real x4, real y4)
{
CBuffer<QVector3D>& vertices = meshBuffer.positionsBuffer();
CBuffer<QVector3D>& normals = meshBuffer.normalsBuffer();
vertices << QVector3D(x1, y1, -0.05f);
vertices << QVector3D(x2, y2, -0.05f);
vertices << QVector3D(x4, y4, -0.05f);
vertices << QVector3D(x3, y3, -0.05f);
vertices << QVector3D(x4, y4, -0.05f);
vertices << QVector3D(x2, y2, -0.05f);
QVector3D n = QVector3D::normal
(QVector3D(x2 - x1, y2 - y1, 0.0f), QVector3D(x4 - x1, y4 - y1, 0.0f));
normals << n;
normals << n;
normals << n;
normals << n;
normals << n;
normals << n;
vertices << QVector3D(x4, y4, 0.05f);
vertices << QVector3D(x2, y2, 0.05f);
vertices << QVector3D(x1, y1, 0.05f);
vertices << QVector3D(x2, y2, 0.05f);
vertices << QVector3D(x4, y4, 0.05f);
vertices << QVector3D(x3, y3, 0.05f);
n = QVector3D::normal
(QVector3D(x2 - x4, y2 - y4, 0.0f), QVector3D(x1 - x4, y1 - y4, 0.0f));
normals << n;
normals << n;
normals << n;
normals << n;
normals << n;
normals << n;
}
void CGeometryTool::extrude(CMeshBuffer& meshBuffer, real x1, real y1, real x2, real y2)
{
CBuffer<QVector3D>& vertices = meshBuffer.positionsBuffer();
CBuffer<QVector3D>& normals = meshBuffer.normalsBuffer();
vertices << QVector3D(x1, y1, +0.05f);
vertices << QVector3D(x2, y2, +0.05f);
vertices << QVector3D(x1, y1, -0.05f);
vertices << QVector3D(x2, y2, -0.05f);
vertices << QVector3D(x1, y1, -0.05f);
vertices << QVector3D(x2, y2, +0.05f);
QVector3D n = QVector3D::normal
(QVector3D(x2 - x1, y2 - y1, 0.0f), QVector3D(0.0f, 0.0f, -0.1f));
normals << n;
normals << n;
normals << n;
normals << n;
normals << n;
normals << n;
}
