MatlEditor/SteinerSurface.cpp at master · sharjith/MatlEditor · GitHub

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#include "SteinerSurface.h"
#include "Point.h"

#include <glm/gtc/constants.hpp>
#include <glm/vec3.hpp>
#include <glm/glm.hpp>


SteinerSurface::SteinerSurface(QOpenGLShaderProgram* prog, GLfloat radius, GLuint nSlices, GLuint nStacks) :
	ParametricSurface(prog, nSlices, nStacks),
	_radius(radius)
{
	_name = "Steiner Surface";
	buildMesh(nSlices, nStacks);
}


SteinerSurface::~SteinerSurface()
{
}

float SteinerSurface::firstUParameter() const
{
	return 0.0;
}

float SteinerSurface::lastUParameter() const
{
	return glm::pi<float>();
}

float SteinerSurface::firstVParameter() const
{
	return 0.0;
}

float SteinerSurface::lastVParameter() const
{
	return glm::pi<float>();
}

Point SteinerSurface::pointAtParameter(const float& u, const float& v)
{
	Point P;
	float x, y, z;

	// Steiner surface
	// Where 0 <= u <= pi, 0 <= v <= pi
	x = _radius * cos(v) * cos(v) * sin(2 * u) / 2;
	y = _radius * sin(u)* sin(2 * v) / 2;
	z = _radius * cos(u)* sin(2 * v) / 2;

	P.setParam(x, y, z);
	return P;
}