53 lines
877 B
C++
53 lines
877 B
C++
#ifndef PLANE_H
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#define PLANE_H
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#include <Indoor/geo/Point3.h>
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#include <QtOpenGL>
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class Plane {
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private:
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Point3 p1;
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Point3 p2;
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Point3 p3;
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Point3 p4;
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Point3 n;
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public:
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/** construct from 2D line and heights */
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Plane(const Point2 from, const Point2 to, const float atHeight, const float height) {
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p1 = Point3(from.x, from.y, atHeight);
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p2 = Point3(to.x, to.y, atHeight);
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p3 = Point3(to.x, to.y, atHeight+height);
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p4 = Point3(from.x, from.y, atHeight+height);
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const Point2 perp = (to-from).perpendicular();
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n = Point3(perp.x, perp.y, 0);
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}
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void paintGL() {
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glDisable(GL_CULL_FACE);
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glBegin(GL_QUADS);
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// bottom
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glNormal3f(n.x, n.z, n.y);
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glVertex3f(p1.x, p1.z, p1.y);
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glVertex3f(p2.x, p2.z, p2.y);
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glVertex3f(p3.x, p3.z, p3.y);
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glVertex3f(p4.x, p4.z, p4.y);
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glEnd();
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glEnable(GL_CULL_FACE);
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}
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};
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#endif // PLANE_H
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