X-Git-Url: http://git.cinelerra-gg.org/git/?a=blobdiff_plain;ds=sidebyside;f=cinelerra-5.1%2Fplugins%2Fperspective%2Fperspective.C;fp=cinelerra-5.1%2Fplugins%2Fperspective%2Fperspective.C;h=26a2e774ebc1eba55a4cc9f25e98151808450d64;hb=30bdb85eb33a8ee7ba675038a86c6be59c43d7bd;hp=0000000000000000000000000000000000000000;hpb=52fcc46226f9df46f9ce9d0566dc568455a7db0b;p=goodguy%2Fhistory.git

diff --git a/cinelerra-5.1/plugins/perspective/perspective.C b/cinelerra-5.1/plugins/perspective/perspective.C
new file mode 100644
index 00000000..26a2e774
--- /dev/null
+++ b/cinelerra-5.1/plugins/perspective/perspective.C
@@ -0,0 +1,1029 @@
+
+/*
+ * CINELERRA
+ * Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
+ * 
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ * 
+ */
+
+#include "affine.h"
+#include "cursors.h"
+#include "language.h"
+#include "perspective.h"
+
+
+
+
+
+
+
+REGISTER_PLUGIN(PerspectiveMain)
+
+
+
+PerspectiveConfig::PerspectiveConfig()
+{
+	x1 = 0;
+	y1 = 0;
+	x2 = 100;
+	y2 = 0;
+	x3 = 100;
+	y3 = 100;
+	x4 = 0;
+	y4 = 100;
+	mode = AffineEngine::PERSPECTIVE;
+	window_w = 400;
+	window_h = 450;
+	current_point = 0;
+	forward = 1;
+}
+
+int PerspectiveConfig::equivalent(PerspectiveConfig &that)
+{
+	return 
+		EQUIV(x1, that.x1) &&
+		EQUIV(y1, that.y1) &&
+		EQUIV(x2, that.x2) &&
+		EQUIV(y2, that.y2) &&
+		EQUIV(x3, that.x3) &&
+		EQUIV(y3, that.y3) &&
+		EQUIV(x4, that.x4) &&
+		EQUIV(y4, that.y4) &&
+		mode == that.mode &&
+		forward == that.forward;
+}
+
+void PerspectiveConfig::copy_from(PerspectiveConfig &that)
+{
+	x1 = that.x1;
+	y1 = that.y1;
+	x2 = that.x2;
+	y2 = that.y2;
+	x3 = that.x3;
+	y3 = that.y3;
+	x4 = that.x4;
+	y4 = that.y4;
+	mode = that.mode;
+	window_w = that.window_w;
+	window_h = that.window_h;
+	current_point = that.current_point;
+	forward = that.forward;
+}
+
+void PerspectiveConfig::interpolate(PerspectiveConfig &prev, 
+	PerspectiveConfig &next, 
+	int64_t prev_frame, 
+	int64_t next_frame, 
+	int64_t current_frame)
+{
+	double next_scale = (double)(current_frame - prev_frame) / (next_frame - prev_frame);
+	double prev_scale = (double)(next_frame - current_frame) / (next_frame - prev_frame);
+	this->x1 = prev.x1 * prev_scale + next.x1 * next_scale;
+	this->y1 = prev.y1 * prev_scale + next.y1 * next_scale;
+	this->x2 = prev.x2 * prev_scale + next.x2 * next_scale;
+	this->y2 = prev.y2 * prev_scale + next.y2 * next_scale;
+	this->x3 = prev.x3 * prev_scale + next.x3 * next_scale;
+	this->y3 = prev.y3 * prev_scale + next.y3 * next_scale;
+	this->x4 = prev.x4 * prev_scale + next.x4 * next_scale;
+	this->y4 = prev.y4 * prev_scale + next.y4 * next_scale;
+	mode = prev.mode;
+	forward = prev.forward;
+}
+
+
+
+
+
+
+
+
+
+
+
+
+
+PerspectiveWindow::PerspectiveWindow(PerspectiveMain *plugin)
+ : PluginClientWindow(plugin,
+	plugin->config.window_w, 
+	plugin->config.window_h, 
+	plugin->config.window_w,
+	plugin->config.window_h,
+	0)
+{
+//printf("PerspectiveWindow::PerspectiveWindow 1 %d %d\n", plugin->config.window_w, plugin->config.window_h);
+	this->plugin = plugin; 
+}
+
+PerspectiveWindow::~PerspectiveWindow()
+{
+}
+
+void PerspectiveWindow::create_objects()
+{
+	int x = 10, y = 10;
+
+	add_subwindow(canvas = new PerspectiveCanvas(plugin, 
+		x, 
+		y, 
+		get_w() - 20, 
+		get_h() - 140));
+	canvas->set_cursor(CROSS_CURSOR, 0, 0);
+	y += canvas->get_h() + 10;
+	add_subwindow(new BC_Title(x, y, _("Current X:")));
+	x += 80;
+	this->x = new PerspectiveCoord(this, 
+		plugin, 
+		x, 
+		y, 
+		plugin->get_current_x(),
+		1);
+	this->x->create_objects();
+	x += 140;
+	add_subwindow(new BC_Title(x, y, _("Y:")));
+	x += 20;
+	this->y = new PerspectiveCoord(this, 
+		plugin, 
+		x, 
+		y, 
+		plugin->get_current_y(),
+		0);
+	this->y->create_objects();
+	y += 30;
+	x = 10;
+	add_subwindow(new PerspectiveReset(plugin, x, y));
+	x += 100;
+	add_subwindow(mode_perspective = new PerspectiveMode(plugin, 
+		x, 
+		y, 
+		AffineEngine::PERSPECTIVE,
+		_("Perspective")));
+	x += 120;
+	add_subwindow(mode_sheer = new PerspectiveMode(plugin, 
+		x, 
+		y, 
+		AffineEngine::SHEER,
+		_("Sheer")));
+	x = 110;
+	y += 30;
+	add_subwindow(mode_stretch = new PerspectiveMode(plugin, 
+		x, 
+		y, 
+		AffineEngine::STRETCH,
+		_("Stretch")));
+	update_canvas();
+	y += 30;
+	x = 10;
+	add_subwindow(new BC_Title(x, y, _("Perspective direction:")));
+	x += 170;
+	add_subwindow(forward = new PerspectiveDirection(plugin, 
+		x, 
+		y, 
+		1,
+		_("Forward")));
+	x += 100;
+	add_subwindow(reverse = new PerspectiveDirection(plugin, 
+		x, 
+		y, 
+		0,
+		_("Reverse")));
+
+	show_window();
+}
+
+
+
+int PerspectiveWindow::resize_event(int w, int h)
+{
+	return 1;
+}
+
+void PerspectiveWindow::update_canvas()
+{
+	canvas->clear_box(0, 0, canvas->get_w(), canvas->get_h());
+	int x1, y1, x2, y2, x3, y3, x4, y4;
+	calculate_canvas_coords(x1, y1, x2, y2, x3, y3, x4, y4);
+
+// printf("PerspectiveWindow::update_canvas %d,%d %d,%d %d,%d %d,%d\n",
+// x1,
+// y1,
+// x2,
+// y2,
+// x3,
+// y3,
+// x4,
+// y4);
+// Draw divisions
+	canvas->set_color(WHITE);
+
+#define DIVISIONS 10
+	for(int i = 0; i <= DIVISIONS; i++)
+	{
+// latitude
+		canvas->draw_line(
+			x1 + (x4 - x1) * i / DIVISIONS,
+			y1 + (y4 - y1) * i / DIVISIONS,
+			x2 + (x3 - x2) * i / DIVISIONS,
+			y2 + (y3 - y2) * i / DIVISIONS);
+// longitude
+		canvas->draw_line(
+			x1 + (x2 - x1) * i / DIVISIONS,
+			y1 + (y2 - y1) * i / DIVISIONS,
+			x4 + (x3 - x4) * i / DIVISIONS,
+			y4 + (y3 - y4) * i / DIVISIONS);
+	}
+
+// Corners
+#define RADIUS 5
+	if(plugin->config.current_point == 0)
+		canvas->draw_disc(x1 - RADIUS, y1 - RADIUS, RADIUS * 2, RADIUS * 2);
+	else
+		canvas->draw_circle(x1 - RADIUS, y1 - RADIUS, RADIUS * 2, RADIUS * 2);
+
+	if(plugin->config.current_point == 1)
+		canvas->draw_disc(x2 - RADIUS, y2 - RADIUS, RADIUS * 2, RADIUS * 2);
+	else
+		canvas->draw_circle(x2 - RADIUS, y2 - RADIUS, RADIUS * 2, RADIUS * 2);
+
+	if(plugin->config.current_point == 2)
+		canvas->draw_disc(x3 - RADIUS, y3 - RADIUS, RADIUS * 2, RADIUS * 2);
+	else
+		canvas->draw_circle(x3 - RADIUS, y3 - RADIUS, RADIUS * 2, RADIUS * 2);
+
+	if(plugin->config.current_point == 3)
+		canvas->draw_disc(x4 - RADIUS, y4 - RADIUS, RADIUS * 2, RADIUS * 2);
+	else
+		canvas->draw_circle(x4 - RADIUS, y4 - RADIUS, RADIUS * 2, RADIUS * 2);
+
+	canvas->flash();
+}
+
+void PerspectiveWindow::update_mode()
+{
+	mode_perspective->update(plugin->config.mode == AffineEngine::PERSPECTIVE);
+	mode_sheer->update(plugin->config.mode == AffineEngine::SHEER);
+	mode_stretch->update(plugin->config.mode == AffineEngine::STRETCH);
+	forward->update(plugin->config.forward);
+	reverse->update(!plugin->config.forward);
+}
+
+void PerspectiveWindow::update_coord()
+{
+	x->update(plugin->get_current_x());
+	y->update(plugin->get_current_y());
+}
+
+void PerspectiveWindow::calculate_canvas_coords(int &x1, 
+	int &y1, 
+	int &x2, 
+	int &y2, 
+	int &x3, 
+	int &y3, 
+	int &x4, 
+	int &y4)
+{
+	int w = canvas->get_w() - 1;
+	int h = canvas->get_h() - 1;
+	if(plugin->config.mode == AffineEngine::PERSPECTIVE ||
+		plugin->config.mode == AffineEngine::STRETCH)
+	{
+		x1 = (int)(plugin->config.x1 * w / 100);
+		y1 = (int)(plugin->config.y1 * h / 100);
+		x2 = (int)(plugin->config.x2 * w / 100);
+		y2 = (int)(plugin->config.y2 * h / 100);
+		x3 = (int)(plugin->config.x3 * w / 100);
+		y3 = (int)(plugin->config.y3 * h / 100);
+		x4 = (int)(plugin->config.x4 * w / 100);
+		y4 = (int)(plugin->config.y4 * h / 100);
+	}
+	else
+	{
+		x1 = (int)(plugin->config.x1 * w) / 100;
+		y1 = 0;
+		x2 = x1 + w;
+		y2 = 0;
+		x4 = (int)(plugin->config.x4 * w) / 100;
+		y4 = h;
+		x3 = x4 + w;
+		y3 = h;
+	}
+}
+
+
+
+
+PerspectiveCanvas::PerspectiveCanvas(PerspectiveMain *plugin, 
+	int x, 
+	int y, 
+	int w,
+	int h)
+ : BC_SubWindow(x, y, w, h, BLACK)
+{
+	this->plugin = plugin;
+	state = PerspectiveCanvas::NONE;
+}
+
+
+
+
+int PerspectiveCanvas::button_press_event()
+{
+	if(is_event_win() && cursor_inside())
+	{
+// Set current point
+		int x1, y1, x2, y2, x3, y3, x4, y4;
+		int cursor_x = get_cursor_x();
+		int cursor_y = get_cursor_y();
+		((PerspectiveWindow*)plugin->thread->window)->calculate_canvas_coords(x1, y1, x2, y2, x3, y3, x4, y4);
+
+		float distance1 = DISTANCE(cursor_x, cursor_y, x1, y1);
+		float distance2 = DISTANCE(cursor_x, cursor_y, x2, y2);
+		float distance3 = DISTANCE(cursor_x, cursor_y, x3, y3);
+		float distance4 = DISTANCE(cursor_x, cursor_y, x4, y4);
+// printf("PerspectiveCanvas::button_press_event %f %d %d %d %d\n", 
+// distance3,
+// cursor_x,
+// cursor_y,
+// x3,
+// y3);
+		float min = distance1;
+		plugin->config.current_point = 0;
+		if(distance2 < min)
+		{
+			min = distance2;
+			plugin->config.current_point = 1;
+		}
+		if(distance3 < min)
+		{
+			min = distance3;
+			plugin->config.current_point = 2;
+		}
+		if(distance4 < min)
+		{
+			min = distance4;
+			plugin->config.current_point = 3;
+		}
+
+		if(plugin->config.mode == AffineEngine::SHEER)
+		{
+			if(plugin->config.current_point == 1)
+				plugin->config.current_point = 0;
+			else
+			if(plugin->config.current_point == 2)
+				plugin->config.current_point = 3;
+		}
+		start_cursor_x = cursor_x;
+		start_cursor_y = cursor_y;
+
+		if(alt_down() || shift_down())
+		{
+			if(alt_down())
+				state = PerspectiveCanvas::DRAG_FULL;
+			else
+				state = PerspectiveCanvas::ZOOM;
+
+// Get starting positions
+			start_x1 = plugin->config.x1;
+			start_y1 = plugin->config.y1;
+			start_x2 = plugin->config.x2;
+			start_y2 = plugin->config.y2;
+			start_x3 = plugin->config.x3;
+			start_y3 = plugin->config.y3;
+			start_x4 = plugin->config.x4;
+			start_y4 = plugin->config.y4;
+		}
+		else
+		{
+			state = PerspectiveCanvas::DRAG;
+
+// Get starting positions
+			start_x1 = plugin->get_current_x();
+			start_y1 = plugin->get_current_y();
+		}
+		((PerspectiveWindow*)plugin->thread->window)->update_coord();
+		((PerspectiveWindow*)plugin->thread->window)->update_canvas();
+		return 1;
+	}
+
+	return 0;
+}
+
+int PerspectiveCanvas::button_release_event()
+{
+	if(state != PerspectiveCanvas::NONE)
+	{
+		state = PerspectiveCanvas::NONE;
+		return 1;
+	}
+	return 0;
+}
+
+int PerspectiveCanvas::cursor_motion_event()
+{
+	if(state != PerspectiveCanvas::NONE)
+	{
+		int w = get_w() - 1;
+		int h = get_h() - 1;
+		if(state == PerspectiveCanvas::DRAG)
+		{
+			plugin->set_current_x((float)(get_cursor_x() - start_cursor_x) / w * 100 + start_x1);
+			plugin->set_current_y((float)(get_cursor_y() - start_cursor_y) / h * 100 + start_y1);
+		}
+		else
+		if(state == PerspectiveCanvas::DRAG_FULL)
+		{
+			plugin->config.x1 = ((float)(get_cursor_x() - start_cursor_x) / w * 100 + start_x1);
+			plugin->config.y1 = ((float)(get_cursor_y() - start_cursor_y) / h * 100 + start_y1);
+			plugin->config.x2 = ((float)(get_cursor_x() - start_cursor_x) / w * 100 + start_x2);
+			plugin->config.y2 = ((float)(get_cursor_y() - start_cursor_y) / h * 100 + start_y2);
+			plugin->config.x3 = ((float)(get_cursor_x() - start_cursor_x) / w * 100 + start_x3);
+			plugin->config.y3 = ((float)(get_cursor_y() - start_cursor_y) / h * 100 + start_y3);
+			plugin->config.x4 = ((float)(get_cursor_x() - start_cursor_x) / w * 100 + start_x4);
+			plugin->config.y4 = ((float)(get_cursor_y() - start_cursor_y) / h * 100 + start_y4);
+		}
+		else
+		if(state == PerspectiveCanvas::ZOOM)
+		{
+			float center_x = (start_x1 +
+				start_x2 +
+				start_x3 +
+				start_x4) / 4;
+			float center_y = (start_y1 +
+				start_y2 +
+				start_y3 +
+				start_y4) / 4;
+			float zoom = (float)(get_cursor_y() - start_cursor_y + 640) / 640;
+			plugin->config.x1 = center_x + (start_x1 - center_x) * zoom;
+			plugin->config.y1 = center_y + (start_y1 - center_y) * zoom;
+			plugin->config.x2 = center_x + (start_x2 - center_x) * zoom;
+			plugin->config.y2 = center_y + (start_y2 - center_y) * zoom;
+			plugin->config.x3 = center_x + (start_x3 - center_x) * zoom;
+			plugin->config.y3 = center_y + (start_y3 - center_y) * zoom;
+			plugin->config.x4 = center_x + (start_x4 - center_x) * zoom;
+			plugin->config.y4 = center_y + (start_y4 - center_y) * zoom;
+		}
+		((PerspectiveWindow*)plugin->thread->window)->update_canvas();
+		((PerspectiveWindow*)plugin->thread->window)->update_coord();
+		plugin->send_configure_change();
+		return 1;
+	}
+
+	return 0;
+}
+
+
+
+
+
+
+PerspectiveCoord::PerspectiveCoord(PerspectiveWindow *gui,
+	PerspectiveMain *plugin, 
+	int x, 
+	int y,
+	float value,
+	int is_x)
+ : BC_TumbleTextBox(gui, value, (float)-100, (float)200, x, y, 100)
+{
+	this->plugin = plugin;
+	this->is_x = is_x;
+}
+
+int PerspectiveCoord::handle_event()
+{
+	if(is_x)
+		plugin->set_current_x(atof(get_text()));
+	else
+		plugin->set_current_y(atof(get_text()));
+	((PerspectiveWindow*)plugin->thread->window)->update_canvas();
+	plugin->send_configure_change();
+	return 1;
+}
+
+
+
+
+
+
+
+
+PerspectiveReset::PerspectiveReset(PerspectiveMain *plugin, 
+	int x, 
+	int y)
+ : BC_GenericButton(x, y, _("Reset"))
+{
+	this->plugin = plugin;
+}
+int PerspectiveReset::handle_event()
+{
+	plugin->config.x1 = 0;
+	plugin->config.y1 = 0;
+	plugin->config.x2 = 100;
+	plugin->config.y2 = 0;
+	plugin->config.x3 = 100;
+	plugin->config.y3 = 100;
+	plugin->config.x4 = 0;
+	plugin->config.y4 = 100;
+	((PerspectiveWindow*)plugin->thread->window)->update_canvas();
+	((PerspectiveWindow*)plugin->thread->window)->update_coord();
+	plugin->send_configure_change();
+	return 1;
+}
+
+
+
+
+
+
+
+
+
+
+
+PerspectiveMode::PerspectiveMode(PerspectiveMain *plugin, 
+	int x, 
+	int y,
+	int value,
+	char *text)
+ : BC_Radial(x, y, plugin->config.mode == value, text)
+{
+	this->plugin = plugin;
+	this->value = value;
+}
+int PerspectiveMode::handle_event()
+{
+	plugin->config.mode = value;
+	((PerspectiveWindow*)plugin->thread->window)->update_mode();
+	((PerspectiveWindow*)plugin->thread->window)->update_canvas();
+	plugin->send_configure_change();
+	return 1;
+}
+
+
+
+
+PerspectiveDirection::PerspectiveDirection(PerspectiveMain *plugin, 
+	int x, 
+	int y,
+	int value,
+	char *text)
+ : BC_Radial(x, y, plugin->config.forward == value, text)
+{
+	this->plugin = plugin;
+	this->value = value;
+}
+int PerspectiveDirection::handle_event()
+{
+	plugin->config.forward = value;
+	((PerspectiveWindow*)plugin->thread->window)->update_mode();
+	plugin->send_configure_change();
+	return 1;
+}
+
+
+
+
+
+
+
+
+
+
+
+
+PerspectiveMain::PerspectiveMain(PluginServer *server)
+ : PluginVClient(server)
+{
+	
+	engine = 0;
+	temp = 0;
+}
+
+PerspectiveMain::~PerspectiveMain()
+{
+	
+	if(engine) delete engine;
+	if(temp) delete temp;
+}
+
+const char* PerspectiveMain::plugin_title() { return _("Perspective"); }
+int PerspectiveMain::is_realtime() { return 1; }
+
+
+
+NEW_WINDOW_MACRO(PerspectiveMain, PerspectiveWindow)
+
+LOAD_CONFIGURATION_MACRO(PerspectiveMain, PerspectiveConfig)
+
+
+
+void PerspectiveMain::update_gui()
+{
+	if(thread)
+	{
+//printf("PerspectiveMain::update_gui 1\n");
+		thread->window->lock_window();
+//printf("PerspectiveMain::update_gui 2\n");
+		load_configuration();
+		((PerspectiveWindow*)thread->window)->update_coord();
+		((PerspectiveWindow*)thread->window)->update_mode();
+		((PerspectiveWindow*)thread->window)->update_canvas();
+		thread->window->unlock_window();
+//printf("PerspectiveMain::update_gui 3\n");
+	}
+}
+
+
+
+
+
+void PerspectiveMain::save_data(KeyFrame *keyframe)
+{
+	FileXML output;
+
+// cause data to be stored directly in text
+	output.set_shared_output(keyframe->get_data(), MESSAGESIZE);
+	output.tag.set_title("PERSPECTIVE");
+
+	output.tag.set_property("X1", config.x1);
+	output.tag.set_property("X2", config.x2);
+	output.tag.set_property("X3", config.x3);
+	output.tag.set_property("X4", config.x4);
+	output.tag.set_property("Y1", config.y1);
+	output.tag.set_property("Y2", config.y2);
+	output.tag.set_property("Y3", config.y3);
+	output.tag.set_property("Y4", config.y4);
+
+	output.tag.set_property("MODE", config.mode);
+	output.tag.set_property("FORWARD", config.forward);
+	output.tag.set_property("WINDOW_W", config.window_w);
+	output.tag.set_property("WINDOW_H", config.window_h);
+	output.append_tag();
+	output.tag.set_title("/PERSPECTIVE");
+	output.append_tag();
+	output.append_newline();
+	output.terminate_string();
+}
+
+void PerspectiveMain::read_data(KeyFrame *keyframe)
+{
+	FileXML input;
+
+	input.set_shared_input(keyframe->get_data(), strlen(keyframe->get_data()));
+
+	int result = 0;
+
+	while(!result)
+	{
+		result = input.read_tag();
+
+		if(!result)
+		{
+			if(input.tag.title_is("PERSPECTIVE"))
+			{
+				config.x1 = input.tag.get_property("X1", config.x1);
+				config.x2 = input.tag.get_property("X2", config.x2);
+				config.x3 = input.tag.get_property("X3", config.x3);
+				config.x4 = input.tag.get_property("X4", config.x4);
+				config.y1 = input.tag.get_property("Y1", config.y1);
+				config.y2 = input.tag.get_property("Y2", config.y2);
+				config.y3 = input.tag.get_property("Y3", config.y3);
+				config.y4 = input.tag.get_property("Y4", config.y4);
+
+				config.mode = input.tag.get_property("MODE", config.mode);
+				config.forward = input.tag.get_property("FORWARD", config.forward);
+				config.window_w = input.tag.get_property("WINDOW_W", config.window_w);
+				config.window_h = input.tag.get_property("WINDOW_H", config.window_h);
+			}
+		}
+	}
+}
+
+float PerspectiveMain::get_current_x()
+{
+	switch(config.current_point)
+	{
+		case 0:
+			return config.x1;
+			break;
+		case 1:
+			return config.x2;
+			break;
+		case 2:
+			return config.x3;
+			break;
+		case 3:
+			return config.x4;
+			break;
+	}
+	return 0;
+}
+
+float PerspectiveMain::get_current_y()
+{
+	switch(config.current_point)
+	{
+		case 0:
+			return config.y1;
+			break;
+		case 1:
+			return config.y2;
+			break;
+		case 2:
+			return config.y3;
+			break;
+		case 3:
+			return config.y4;
+			break;
+	}
+	return 0;
+}
+
+void PerspectiveMain::set_current_x(float value)
+{
+	switch(config.current_point)
+	{
+		case 0:
+			config.x1 = value;
+			break;
+		case 1:
+			config.x2 = value;
+			break;
+		case 2:
+			config.x3 = value;
+			break;
+		case 3:
+			config.x4 = value;
+			break;
+	}
+}
+
+void PerspectiveMain::set_current_y(float value)
+{
+	switch(config.current_point)
+	{
+		case 0:
+			config.y1 = value;
+			break;
+		case 1:
+			config.y2 = value;
+			break;
+		case 2:
+			config.y3 = value;
+			break;
+		case 3:
+			config.y4 = value;
+			break;
+	}
+}
+
+
+
+int PerspectiveMain::process_buffer(VFrame *frame,
+	int64_t start_position,
+	double frame_rate)
+{
+	/*int need_reconfigure =*/ load_configuration();
+
+// Do nothing
+	if( EQUIV(config.x1, 0)   && EQUIV(config.y1, 0) &&
+		EQUIV(config.x2, 100) && EQUIV(config.y2, 0) &&
+		EQUIV(config.x3, 100) && EQUIV(config.y3, 100) &&
+		EQUIV(config.x4, 0)   && EQUIV(config.y4, 100))
+	{
+		read_frame(frame, 
+			0, 
+			start_position, 
+			frame_rate,
+			get_use_opengl());
+		return 1;
+	}
+
+// Opengl does some funny business with stretching.
+	int use_opengl = get_use_opengl() &&
+		(config.mode == AffineEngine::PERSPECTIVE || 
+		config.mode == AffineEngine::SHEER);
+	read_frame(frame, 
+		0, 
+		start_position, 
+		frame_rate,
+		use_opengl);
+
+	if(!engine) engine = new AffineEngine(get_project_smp() + 1,
+		get_project_smp() + 1);
+
+	if(use_opengl)
+		return run_opengl();
+
+
+
+	this->input = frame;
+	this->output = frame;
+
+	int w = frame->get_w();
+	int h = frame->get_h();
+	int color_model = frame->get_color_model();
+
+	if(temp && 
+		config.mode == AffineEngine::STRETCH &&
+		(temp->get_w() != w * AFFINE_OVERSAMPLE ||
+			temp->get_h() != h * AFFINE_OVERSAMPLE))
+	{
+		delete temp;
+		temp = 0;
+	}
+	else
+	if(temp &&
+		(config.mode == AffineEngine::PERSPECTIVE ||
+		config.mode == AffineEngine::SHEER) &&
+		(temp->get_w() != w ||
+			temp->get_h() != h))
+	{
+		delete temp;
+		temp = 0;
+	}
+
+	if(config.mode == AffineEngine::STRETCH)
+	{
+		if(!temp)
+		{
+			temp = new VFrame(0,
+					-1,
+					w * AFFINE_OVERSAMPLE,
+					h * AFFINE_OVERSAMPLE,
+					color_model,
+					-1);
+		}
+		temp->clear_frame();
+	}
+
+	if(config.mode == AffineEngine::PERSPECTIVE ||
+		config.mode == AffineEngine::SHEER)
+	{
+		if(frame->get_rows()[0] == frame->get_rows()[0])
+		{
+			if(!temp) 
+			{
+				temp = new VFrame(0,
+					-1,
+					w,
+					h,
+					color_model,
+					-1);
+			}
+			temp->copy_from(input);
+			input = temp;
+		}
+		output->clear_frame();
+	}
+
+
+	engine->process(output,
+		input,
+		temp, 
+		config.mode,
+		config.x1,
+		config.y1,
+		config.x2,
+		config.y2,
+		config.x3,
+		config.y3,
+		config.x4,
+		config.y4,
+		config.forward);
+
+
+
+
+// Resample
+
+	if(config.mode == AffineEngine::STRETCH)
+	{
+#define RESAMPLE(type, components, chroma_offset) \
+{ \
+	for(int i = 0; i < h; i++) \
+	{ \
+		type *out_row = (type*)output->get_rows()[i]; \
+		type *in_row1 = (type*)temp->get_rows()[i * AFFINE_OVERSAMPLE]; \
+		type *in_row2 = (type*)temp->get_rows()[i * AFFINE_OVERSAMPLE + 1]; \
+		for(int j = 0; j < w; j++) \
+		{ \
+			out_row[0] = (in_row1[0] +  \
+					in_row1[components] +  \
+					in_row2[0] +  \
+					in_row2[components]) /  \
+				AFFINE_OVERSAMPLE /  \
+				AFFINE_OVERSAMPLE; \
+			out_row[1] = ((in_row1[1] +  \
+						in_row1[components + 1] +  \
+						in_row2[1] +  \
+						in_row2[components + 1]) -  \
+					chroma_offset *  \
+					AFFINE_OVERSAMPLE *  \
+					AFFINE_OVERSAMPLE) /  \
+				AFFINE_OVERSAMPLE /  \
+				AFFINE_OVERSAMPLE + \
+				chroma_offset; \
+			out_row[2] = ((in_row1[2] +  \
+						in_row1[components + 2] +  \
+						in_row2[2] +  \
+						in_row2[components + 2]) -  \
+					chroma_offset *  \
+					AFFINE_OVERSAMPLE *  \
+					AFFINE_OVERSAMPLE) /  \
+				AFFINE_OVERSAMPLE /  \
+				AFFINE_OVERSAMPLE + \
+				chroma_offset; \
+			if(components == 4) \
+			{ \
+				out_row[3] = (in_row1[3] +  \
+						in_row1[components + 3] +  \
+						in_row2[3] +  \
+						in_row2[components + 3]) /  \
+					AFFINE_OVERSAMPLE /  \
+					AFFINE_OVERSAMPLE; \
+			} \
+			out_row += components; \
+			in_row1 += components * AFFINE_OVERSAMPLE; \
+			in_row2 += components * AFFINE_OVERSAMPLE; \
+		} \
+	} \
+}
+
+		switch(frame->get_color_model())
+		{
+			case BC_RGB_FLOAT:
+				RESAMPLE(float, 3, 0)
+				break;
+			case BC_RGB888:
+				RESAMPLE(unsigned char, 3, 0)
+				break;
+			case BC_RGBA_FLOAT:
+				RESAMPLE(float, 4, 0)
+				break;
+			case BC_RGBA8888:
+				RESAMPLE(unsigned char, 4, 0)
+				break;
+			case BC_YUV888:
+				RESAMPLE(unsigned char, 3, 0x80)
+				break;
+			case BC_YUVA8888:
+				RESAMPLE(unsigned char, 4, 0x80)
+				break;
+			case BC_RGB161616:
+				RESAMPLE(uint16_t, 3, 0)
+				break;
+			case BC_RGBA16161616:
+				RESAMPLE(uint16_t, 4, 0)
+				break;
+			case BC_YUV161616:
+				RESAMPLE(uint16_t, 3, 0x8000)
+				break;
+			case BC_YUVA16161616:
+				RESAMPLE(uint16_t, 4, 0x8000)
+				break;
+		}
+	}
+
+	return 1;
+}
+
+
+int PerspectiveMain::handle_opengl()
+{
+#ifdef HAVE_GL
+	engine->set_opengl(1);
+	engine->process(get_output(),
+		get_output(),
+		get_output(), 
+		config.mode,
+		config.x1,
+		config.y1,
+		config.x2,
+		config.y2,
+		config.x3,
+		config.y3,
+		config.x4,
+		config.y4,
+		config.forward);
+	engine->set_opengl(0);
+	return 0;
+#endif
+}
+
+
+
+
+
+