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// Copyright (c) 2011, Thomas Goyne <plorkyeran@aegisub.org>
//
// Permission to use, copy, modify, and distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
//
// Aegisub Project http://www.aegisub.org/
//
// $Id$
/// @file visual_tool_rotatez.cpp
/// @brief 2D rotation in Z axis visual typesetting tool
/// @ingroup visual_ts
#include "config.h"
#ifndef AGI_PRE
#include <cmath>
#endif
#include "visual_tool_rotatez.h"
#include "utils.h"
static const float deg2rad = 3.1415926536f / 180.f;
static const float rad2deg = 180.f / 3.1415926536f;
VisualToolRotateZ::VisualToolRotateZ(VideoDisplay *parent, agi::Context *context)
: VisualTool<VisualDraggableFeature>(parent, context)
{
features.resize(1);
org = &features.back();
org->type = DRAG_BIG_TRIANGLE;
}
void VisualToolRotateZ::Draw() {
if (!active_line) return;
DrawAllFeatures();
float radius = (pos - org->pos).Len();
float oRadius = radius;
if (radius < 50)
radius = 50;
// Set up the projection
gl.SetOrigin(org->pos);
gl.SetRotation(rotation_x, rotation_y, 0);
gl.SetScale(scale);
// Draw the circle
gl.SetLineColour(colour[0]);
gl.SetFillColour(colour[1], 0.3f);
gl.DrawRing(Vector2D(0, 0), radius + 4, radius - 4);
// Draw markers around circle
int markers = 6;
float markStart = -90.f / markers;
float markEnd = markStart + (180.f / markers);
for (int i = 0; i < markers; ++i) {
float angle = i * (360.f / markers);
gl.DrawRing(Vector2D(0, 0), radius+30, radius+12, 1.0, angle+markStart, angle+markEnd);
}
// Draw the baseline through the origin showing current rotation
Vector2D angle_vec(Vector2D::FromAngle(angle * deg2rad));
gl.SetLineColour(colour[3], 1, 2);
gl.DrawLine(angle_vec * -radius, angle_vec * radius);
if (org->pos != pos) {
Vector2D rotated_pos = Vector2D::FromAngle(angle * deg2rad - (pos - org->pos).Angle()) * oRadius;
// Draw the line from origin to rotated position
gl.DrawLine(Vector2D(), rotated_pos);
// Draw the line under the text
gl.DrawLine(rotated_pos - angle_vec * 20, rotated_pos + angle_vec * 20);
}
// Draw the fake features on the ring
gl.SetLineColour(colour[0], 1.f, 1);
gl.SetFillColour(colour[1], 0.3f);
gl.DrawCircle(angle_vec * radius, 4);
gl.DrawCircle(angle_vec * -radius, 4);
// Clear the projection
gl.ResetTransform();
// Draw line to mouse if it isn't over the origin feature
if (mouse_pos && (mouse_pos - org->pos).SquareLen() > 100) {
gl.SetLineColour(colour[0]);
gl.DrawLine(org->pos, mouse_pos);
}
}
bool VisualToolRotateZ::InitializeHold() {
orig_angle = angle + (org->pos - mouse_pos).Angle() * rad2deg;
return true;
}
void VisualToolRotateZ::UpdateHold() {
angle = orig_angle - (org->pos - mouse_pos).Angle() * rad2deg;
if (ctrl_down)
angle = floorf(angle / 30.f + .5f) * 30.f;
angle = fmodf(angle + 360.f, 360.f);
SetSelectedOverride("\\frz", wxString::Format("%.4g", angle));
}
void VisualToolRotateZ::UpdateDrag(feature_iterator feature) {
SetOverride(active_line, "\\org", ToScriptCoords(feature->pos).PStr());
}
void VisualToolRotateZ::DoRefresh() {
if (!active_line) return;
pos = FromScriptCoords(GetLinePosition(active_line));
if (!(org->pos = GetLineOrigin(active_line)))
org->pos = pos;
else
org->pos = FromScriptCoords(org->pos);
GetLineRotation(active_line, rotation_x, rotation_y, angle);
GetLineScale(active_line, scale);
}
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