117 lines
3.7 KiB
C++
117 lines
3.7 KiB
C++
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#include "GLSelectionRectangle.hpp"
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#include "Camera.hpp"
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#include "3DScene.hpp"
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#include <GL/glew.h>
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namespace Slic3r {
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namespace GUI {
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void GLSelectionRectangle::start_dragging(const Vec2d& mouse_position, float width, float height, EState status)
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{
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if (is_active() || status==Off)
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return;
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m_width = width;
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m_height = height;
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m_status = status;
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m_start_corner = mouse_position;
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m_end_corner = mouse_position;
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}
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void GLSelectionRectangle::dragging(const Vec2d& mouse_position)
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{
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if (is_active())
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m_end_corner = mouse_position;
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}
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std::vector<unsigned int> GLSelectionRectangle::end_dragging(const Camera& camera, const std::vector<Vec3d>& points)
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{
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if (!is_active())
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return std::vector<unsigned int>();
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m_status = Off;
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std::vector<unsigned int> out;
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const std::array<int, 4>& viewport = camera.get_viewport();
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const Transform3d& modelview_matrix = camera.get_view_matrix();
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const Transform3d& projection_matrix = camera.get_projection_matrix();
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// bounding box created from the rectangle corners - will take care of order of the corners
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BoundingBox rectangle(Points{Point(m_start_corner.cast<int>()), Point(m_end_corner.cast<int>())});
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// Iterate over all points and determine whether they're in the rectangle.
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for (unsigned int i=0; i<points.size(); ++i) {
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const Vec3d& point = points[i];
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GLdouble out_x, out_y, out_z;
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::gluProject((GLdouble)point(0), (GLdouble)point(1), (GLdouble)point(2), (GLdouble*)modelview_matrix.data(), (GLdouble*)projection_matrix.data(), (GLint*)viewport.data(), &out_x, &out_y, &out_z);
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out_y = m_height - out_y;
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if (rectangle.contains(Point(out_x, out_y)))
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out.push_back(i);
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}
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return out;
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}
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void GLSelectionRectangle::render() const
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{
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float render_color[3];
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switch (m_status) {
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case Off : return;
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case SlaSelect : render_color[0] = 0.f;
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render_color[1] = 1.f;
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render_color[2] = 0.f;
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break;
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case SlaDeselect : render_color[0] = 1.f;
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render_color[1] = 0.3f;
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render_color[2] = 0.3f;
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break;
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}
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glsafe(::glColor3fv(render_color));
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glsafe(::glLineWidth(1.5f));
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glsafe(::glPushAttrib(GL_TRANSFORM_BIT)); // remember current MatrixMode
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glsafe(::glMatrixMode(GL_MODELVIEW)); // cache modelview matrix and set to identity
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glsafe(::glPushMatrix());
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glsafe(::glLoadIdentity());
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glsafe(::glMatrixMode(GL_PROJECTION)); // cache projection matrix and set to identity
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glsafe(::glPushMatrix());
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glsafe(::glLoadIdentity());
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glsafe(::glOrtho(0.f, m_width, m_height, 0.f, -1.f, 1.f)); // set projection matrix so that world coords = window coords
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// render the selection rectangle (window coordinates):
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glsafe(::glPushAttrib(GL_ENABLE_BIT));
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glsafe(::glLineStipple(4, 0xAAAA));
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glsafe(::glEnable(GL_LINE_STIPPLE));
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::glBegin(GL_LINE_LOOP);
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::glVertex3f((GLfloat)m_start_corner(0), (GLfloat)m_start_corner(1), (GLfloat)0.5f);
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::glVertex3f((GLfloat)m_end_corner(0), (GLfloat)m_start_corner(1), (GLfloat)0.5f);
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::glVertex3f((GLfloat)m_end_corner(0), (GLfloat)m_end_corner(1), (GLfloat)0.5f);
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::glVertex3f((GLfloat)m_start_corner(0), (GLfloat)m_end_corner(1), (GLfloat)0.5f);
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glsafe(::glEnd());
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glsafe(::glPopAttrib());
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glsafe(::glPopMatrix()); // restore former projection matrix
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glsafe(::glMatrixMode(GL_MODELVIEW));
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glsafe(::glPopMatrix()); // restore former modelview matrix
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glsafe(::glPopAttrib()); // restore former MatrixMode
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}
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} // namespace GUI
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} // namespace Slic3r
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