A rotozoomer example was added to demonstrate the drawing speed of FINAL CUT
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Markus Gans
parent
45218b0f61
commit
86ccd30eae
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@ -58,6 +58,7 @@ examples/listview
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examples/checklist
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examples/treeview
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examples/mandelbrot
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examples/rotozoomer
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examples/keyboard
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examples/mouse
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examples/timer
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@ -1,3 +1,7 @@
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2020-03-08 Markus Gans <guru.mail@muenster.de>
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* A rotozoomer example was added to demonstrate the drawing speed
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of FINAL CUT
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2020-03-07 Markus Gans <guru.mail@muenster.de>
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* Fixes keyboard input buffer problem when opening a modal dialog
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* Exit the move-resize-mode when the close confirmation dialog
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@ -22,6 +22,7 @@ noinst_PROGRAMS = \
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termcap \
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string-operations \
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mandelbrot \
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rotozoomer \
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calculator \
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watch \
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term-attributes \
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@ -48,6 +49,7 @@ treeview_SOURCES = treeview.cpp
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opti_move_SOURCES = opti-move.cpp
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string_operations_SOURCES = string-operations.cpp
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mandelbrot_SOURCES = mandelbrot.cpp
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rotozoomer_SOURCES = rotozoomer.cpp
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calculator_SOURCES = calculator.cpp
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watch_SOURCES = watch.cpp
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term_attributes_SOURCES = term-attributes.cpp
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@ -0,0 +1,238 @@
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/***********************************************************************
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* rotozoomer.cpp - Rotozoomer effect demo *
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* *
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* This file is part of the Final Cut widget toolkit *
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* *
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* Copyright 2020 Markus Gans *
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* *
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* The Final Cut is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU Lesser General Public License *
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* as published by the Free Software Foundation; either version 3 of *
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* the License, or (at your option) any later version. *
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* *
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* The Final Cut is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU Lesser General Public License for more details. *
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* *
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* You should have received a copy of the GNU Lesser General Public *
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* License along with this program. If not, see *
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* <http://www.gnu.org/licenses/>. *
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***********************************************************************/
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#include <cmath>
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#include <final/final.h>
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namespace fc = finalcut::fc;
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using finalcut::FPoint;
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using finalcut::FSize;
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// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// This rotozoomer demo is based on the code of Robert Dörfler
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// http://bloerp.de/code/tempel/roto.c
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// http://bloerp.de/code/tempel/tempel-des-codes.html
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// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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//----------------------------------------------------------------------
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// class RotoZoomer
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//----------------------------------------------------------------------
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class RotoZoomer : public finalcut::FDialog
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{
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public:
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// Constructor
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explicit RotoZoomer (finalcut::FWidget* = nullptr);
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// Destructor
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~RotoZoomer() override;
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// Event handlers
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void onShow (finalcut::FShowEvent*) override;
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void onTimer (finalcut::FTimerEvent*) override;
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void onKeyPress (finalcut::FKeyEvent*) override;
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void onClose (finalcut::FCloseEvent*) override;
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private:
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// Methods
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void draw() override;
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void rotozoomer (double, double, double, double);
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void adjustSize() override;
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// Data member
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wchar_t data[256]{};
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int path{0};
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};
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//----------------------------------------------------------------------
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RotoZoomer::RotoZoomer (finalcut::FWidget* parent)
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: finalcut::FDialog(parent)
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{
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setText ("Rotozoomer effect");
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int h{0};
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for (int j{0}; j < 8; j++)
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{
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for (int i{0}; i < 8; i++)
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{
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data[h++] = L' ';
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}
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for (int i{0}; i < 8; i++)
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{
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data[h++] = L'+';
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}
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}
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for (int j{0}; j < 8; j++)
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{
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for (int i{0}; i < 8; i++)
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{
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data[h++] = L'x';
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}
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for (int i{0}; i < 8; i++)
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{
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data[h++] = L' ';
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}
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}
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}
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//----------------------------------------------------------------------
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RotoZoomer::~RotoZoomer()
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{ }
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//----------------------------------------------------------------------
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void RotoZoomer::draw()
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{
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finalcut::FDialog::draw();
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double cx = double(80.0 / 2.0 + (80.0 / 2.0 * std::sin(double(path) / 50.0)));
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double cy = double(23.0 + (23.0 * std::cos(double(path) / 50.0)));
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double r = double(128.0 + 96.0 * std::cos(double(path) / 10.0));
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double a = double(path) / 50.0;
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print() << finalcut::FColorPair(fc::White, fc::Black);
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rotozoomer (cx, cy, r, a);
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}
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//----------------------------------------------------------------------
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void RotoZoomer::rotozoomer (double cx, double cy, double r, double a)
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{
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const int Cols = int(getClientWidth());
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const int Lines = int(getClientHeight());
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int Ax = int(4096.0 * (cx + r * std::cos(a)));
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int Ay = int(4096.0 * (cy + r * std::sin(a)));
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int Bx = int(4096.0 * (cx + r * std::cos(a + 2.02358)));
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int By = int(4096.0 * (cy + r * std::sin(a + 2.02358)));
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int Cx = int(4096.0 * (cx + r * std::cos(a - 1.11701)));
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int Cy = int(4096.0 * (cy + r * std::sin(a - 1.11701)));
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int dxdx = (Bx - Ax) / 80;
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int dydx = (By - Ay) / 80;
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int dxdy = (Cx - Ax) / 23;
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int dydy = (Cy - Ay) / 23;
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for (int y = 0; y < Lines; y++)
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{
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Cx = Ax;
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Cy = Ay;
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print() << FPoint(2, 3 + y);
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for (int x = 0; x < Cols; x++)
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{
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wchar_t ch = data[((Cy >> 14) & 0xf) + ((Cx >> 10) & 0xf0)];
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if ( ch == '+' )
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print() << finalcut::FColorPair(fc::Black, fc::Red);
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else if ( ch == 'x' )
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print() << finalcut::FColorPair(fc::Black, fc::Cyan);
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else
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print() << finalcut::FColorPair(fc::Black, fc::White);
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print() << ch;
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Cx += dxdx;
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Cy += dydx;
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}
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Ax += dxdy;
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Ay += dydy;
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}
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}
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//----------------------------------------------------------------------
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void RotoZoomer::onShow (finalcut::FShowEvent*)
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{
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addTimer(33);
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}
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//----------------------------------------------------------------------
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void RotoZoomer::onTimer (finalcut::FTimerEvent*)
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{
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if ( path >= 314 )
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path = 0;
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else
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path++;
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redraw();
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updateTerminal();
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flush();
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}
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//----------------------------------------------------------------------
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void RotoZoomer::onKeyPress (finalcut::FKeyEvent* ev)
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{
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if ( ! ev )
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return;
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if ( ev->key() == 'q' )
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{
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close();
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ev->accept();
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}
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else
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finalcut::FDialog::onKeyPress(ev);
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}
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//----------------------------------------------------------------------
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void RotoZoomer::onClose (finalcut::FCloseEvent* ev)
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{
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finalcut::FApplication::closeConfirmationDialog (this, ev);
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}
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//----------------------------------------------------------------------
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void RotoZoomer::adjustSize()
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{
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std::size_t h = getDesktopHeight();
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std::size_t w = getDesktopWidth();
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if ( h > 1 )
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h--;
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if ( w > 8 )
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w -= 8;
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setGeometry(FPoint(5, 1), FSize(w, h), false);
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finalcut::FDialog::adjustSize();
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}
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//----------------------------------------------------------------------
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// main part
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//----------------------------------------------------------------------
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int main (int argc, char* argv[])
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{
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// Create the application object
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finalcut::FApplication app(argc, argv);
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app.setNonBlockingRead();
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// Create a simple dialog box
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RotoZoomer p(&app);
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p.setGeometry (FPoint(5, 1), FSize(72, 23));
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p.setShadow();
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// Set the RotoZoomer object as main widget
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app.setMainWidget(&p);
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// Show and start the application
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p.show();
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return app.exec();
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}
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