2ae2672ee9
Fixing dep build script on Windows and removing some warnings. Use bundled igl by default. Not building with the dependency scripts if not explicitly stated. This way, it will stay in Fix the libigl patch to include C source files in header only mode.
81 lines
2.5 KiB
C++
81 lines
2.5 KiB
C++
// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2013 Alec Jacobson <alecjacobson@gmail.com>
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//
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// This Source Code Form is subject to the terms of the Mozilla Public License
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// v. 2.0. If a copy of the MPL was not distributed with this file, You can
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// obtain one at http://mozilla.org/MPL/2.0/.
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#ifndef IGL_TRACKBALL_H
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#define IGL_TRACKBALL_H
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#include "igl_inline.h"
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#include <Eigen/Core>
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#include <Eigen/Geometry>
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namespace igl
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{
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// Applies a trackball drag to identity
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// Inputs:
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// w width of the trackball context
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// h height of the trackball context
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// speed_factor controls how fast the trackball feels, 1 is normal
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// down_mouse_x x position of mouse down
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// down_mouse_y y position of mouse down
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// mouse_x current x position of mouse
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// mouse_y current y position of mouse
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// Outputs:
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// quat the resulting rotation (as quaternion)
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template <typename Q_type>
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IGL_INLINE void trackball(
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const double w,
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const double h,
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const Q_type speed_factor,
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const double down_mouse_x,
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const double down_mouse_y,
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const double mouse_x,
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const double mouse_y,
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Q_type * quat);
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// Applies a trackball drag to a given rotation
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// Inputs:
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// w width of the trackball context
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// h height of the trackball context
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// speed_factor controls how fast the trackball feels, 1 is normal
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// down_quat rotation at mouse down, i.e. the rotation we're applying the
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// trackball motion to (as quaternion)
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// down_mouse_x x position of mouse down
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// down_mouse_y y position of mouse down
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// mouse_x current x position of mouse
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// mouse_y current y position of mouse
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// Outputs:
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// quat the resulting rotation (as quaternion)
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template <typename Q_type>
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IGL_INLINE void trackball(
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const double w,
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const double h,
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const Q_type speed_factor,
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const Q_type * down_quat,
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const double down_mouse_x,
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const double down_mouse_y,
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const double mouse_x,
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const double mouse_y,
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Q_type * quat);
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// Eigen wrapper.
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template <typename Scalardown_quat, typename Scalarquat>
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IGL_INLINE void trackball(
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const double w,
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const double h,
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const double speed_factor,
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const Eigen::Quaternion<Scalardown_quat> & down_quat,
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const double down_mouse_x,
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const double down_mouse_y,
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const double mouse_x,
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const double mouse_y,
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Eigen::Quaternion<Scalarquat> & quat);
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "trackball.cpp"
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#endif
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#endif
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