archivage initial

cylinder.h

@@ -0,0 +1,69 @@
+#ifndef CYLINDER_HPP
+#define CYLINDER_HPP
+
+#include <GL/glu.h>
+#include <math.h>
+#include <array>
+#include <QOpenGLFunctions>
+
+
+struct Color
+{
+	float r;
+	float g;
+	float b;
+
+	Color(float r, float g, float b) :r(r), g(g), b(b) {};
+};
+
+
+struct VertexBuf
+{
+	size_t i = 0;
+	size_t size;
+	GLfloat *vertices;
+	GLfloat *colors;
+
+	VertexBuf(size_t i)
+		:size(i*3),
+		 vertices(new GLfloat[size]),
+		 colors(new GLfloat[size]) {}
+
+	void push(GLfloat x, GLfloat y, GLfloat z, Color &c);
+};
+
+
+struct Cylinder
+{
+	float ep;
+	float r;
+	unsigned nb_fac;
+	Color c;
+	float angle;
+
+	size_t face_size;
+	size_t side_size;
+
+	VertexBuf vb;
+
+	Cylinder(float ep, float r, unsigned nb_fac, Color c)
+		:ep(ep),
+		r(r),
+		nb_fac(nb_fac),
+		c(c),
+		angle(2*M_PI/nb_fac),
+		face_size(nb_fac*3),
+		side_size((nb_fac+1) * 2),
+		vb(2 * face_size + side_size)
+		{
+			build_faces();
+			build_side();
+		}
+
+	void build_face(float z);
+	void build_faces();
+	void build_side();
+	void draw(QOpenGLFunctions &f, int pos, int col);
+};
+
+#endif