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edd921c428
* Add measurement tool bar. * Add class for measure line. * Get coordinate of clicked point. * Add clicked point to string line. * Store clicekd points to layer. * Try to render the measurement line. * Render the measurement line (with some problems). * Store points in vector. * Make identify and measure tool exlusive to each other. * Add measurement dialog. * Fix only one action must active. * Some code suggestion from Martin. * Revert code to show the line. * Show segment length and the total. * Implement close dialog means restart 3d measurement. * Add new button. * Add unit combo box. * Fix shadowing private member of class. * Add slot to combo box unit changes. * Hide ellipsoid and cartesian radio button. * Add measure line for QgsPoint. * Add unit changes feature. * Add help (pointed to 2D measurement tool). * Add finish measurement using right click. * Remove keypress event, it does not make sense. * Add remove-last-point with middle button. * Add crsChanged event. * Remove confusing tooltip. * Add pan (camera control) action tool for clear state of 3d map tool. * Change 3D identify tool cursor. * Fix distance 2D to 3D. * Remove unclear method. * Add unit test for measureLine3D. * Add 3D measurement setting. * Add header. * Make extra 3D renderers refresh the scene when they are updated + update the 3D renderer every time the measurement line layer is modified * Set Altitude clamping to absolute. * Remove options for 3D measurement line. * Remove help button in 3D measurement dialog. * Merge duplicate code for handle clicked position. * Use color for 3d measure line from 2d one. * Remove unneeded reimplementation method. * Remove 2D canvas reference. * Unify update measurement layer. Use local variable for feature and line * Create measurement layer once. * Use data provider to change the geometry. * Add length3D for QgsLineString. * Simplify distance calculation and presentation. Remove QgsDistanceArea measurement. * Descaled z value based on the terrain vertical scale. * Remove line when tool is deactivated. * Enable changing the line color from setting, but after re-activation. * Update color of measurement line after saving option. * Remove debug message. * Remove 3D length calculation from distancearea. * Handle 2D case for length3D, more unit test, and docstring. * Fix typos. * Addressing Martin's and Nyall's review. * Remove setMeasurement to avoid confussion.