void drawBezier(p2d* bezierpoints, unsigned int num, int smooth)
{
int i;
p2d tmpp;
glBegin(GL_LINE_STRIP);
for(i=0;i<=smooth;i++)
{
tmpp = bezierInterpolation(bezierpoints, num, ((float)i)/smooth);
glVertex3f(tmpp[0], tmpp[1], 0);
releasp2d(tmpp);
}
glEnd();
}
void Spline::update()
{
if (m_vertices.size() == 0)
{
m_sfmlVertices.clear();
m_handlesVertices.clear();
return;
}
const unsigned int pointsPerVertex{ m_interpolationSteps + 1u };
m_sfmlVertices.resize(((m_vertices.size() - 1) * pointsPerVertex) + 1);
m_handlesVertices.resize((m_vertices.size()) * 4);
std::vector<sf::Vertex>::iterator itHandle = m_handlesVertices.begin();
for (std::vector<Vertex>::iterator begin = m_vertices.begin(), end = m_vertices.end(), it = begin; it != end; ++it)
{
itHandle->color = sf::Color(255, 255, 128, 32);
itHandle++->position = it->position;
itHandle->color = sf::Color(0, 255, 0, 128);
itHandle++->position = it->position + it->backHandle;
itHandle->color = sf::Color(255, 255, 128, 32);
itHandle++->position = it->position;
itHandle->color = sf::Color(0, 255, 0, 128);
itHandle++->position = it->position + it->frontHandle;
std::vector<sf::Vertex>::iterator itSfml = m_sfmlVertices.begin() + (it - begin) * pointsPerVertex;
if (it != end - 1)
{
for (unsigned int i{ 0u }; i < pointsPerVertex; ++i)
{
if (m_useBezier)
itSfml->position = bezierInterpolation(it->position, (it + 1)->position, it->frontHandle, (it + 1)->backHandle, static_cast<float>(i) / pointsPerVertex);
else
itSfml->position = linearInterpolation(it->position, (it + 1)->position, static_cast<float>(i) / pointsPerVertex);
itSfml->color = m_color;
++itSfml;
}
}
else
{
itSfml->position = it->position;
itSfml->color = m_color;
}
}
}
