Aegisub/aegisub/src/visual_tool_vector_clip.cpp

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// Copyright (c) 2007, Rodrigo Braz Monteiro
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
// * Neither the name of the Aegisub Group nor the names of its contributors
// may be used to endorse or promote products derived from this software
// without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
// Aegisub Project http://www.aegisub.org/
//
// $Id$
/// @file visual_tool_vector_clip.cpp
/// @brief Vector clipping visual typesetting tool
/// @ingroup visual_ts
#ifndef AGI_PRE
#include <wx/toolbar.h>
#ifdef HAVE_APPLE_OPENGL_FRAMEWORK
#include <OpenGL/GL.h>
#include <OpenGL/glu.h>
#include <OpenGL/glext.h>
#else
#include <GL/gl.h>
#include <GL/glu.h>
#include "gl/glext.h"
#endif
#include <algorithm>
#endif
#include "config.h"
#include "ass_dialogue.h"
#include "libresrc/libresrc.h"
#include "video_display.h"
#include "visual_tool_vector_clip.h"
/// Button IDs
enum {
BUTTON_DRAG = VISUAL_SUB_TOOL_START,
BUTTON_LINE,
BUTTON_BICUBIC,
BUTTON_CONVERT,
BUTTON_INSERT,
BUTTON_REMOVE,
BUTTON_FREEHAND,
BUTTON_FREEHAND_SMOOTH,
BUTTON_LAST // Leave this at the end and don't use it
};
VisualToolVectorClip::VisualToolVectorClip(VideoDisplay *parent, VideoState const& video, wxToolBar * toolBar)
: VisualTool<VisualToolVectorClipDraggableFeature>(parent, video)
, spline(*parent)
, toolBar(toolBar)
{
// Create toolbar
toolBar->AddTool(BUTTON_DRAG,_("Drag"),GETIMAGE(visual_vector_clip_drag_24),_("Drag control points."),wxITEM_CHECK);
toolBar->AddTool(BUTTON_LINE,_("Line"),GETIMAGE(visual_vector_clip_line_24),_("Appends a line."),wxITEM_CHECK);
toolBar->AddTool(BUTTON_BICUBIC,_("Bicubic"),GETIMAGE(visual_vector_clip_bicubic_24),_("Appends a bezier bicubic curve."),wxITEM_CHECK);
toolBar->AddSeparator();
toolBar->AddTool(BUTTON_CONVERT,_("Convert"),GETIMAGE(visual_vector_clip_convert_24),_("Converts a segment between line and bicubic."),wxITEM_CHECK);
toolBar->AddTool(BUTTON_INSERT,_("Insert"),GETIMAGE(visual_vector_clip_insert_24),_("Inserts a control point."),wxITEM_CHECK);
toolBar->AddTool(BUTTON_REMOVE,_("Remove"),GETIMAGE(visual_vector_clip_remove_24),_("Removes a control point."),wxITEM_CHECK);
toolBar->AddSeparator();
toolBar->AddTool(BUTTON_FREEHAND,_("Freehand"),GETIMAGE(visual_vector_clip_freehand_24),_("Draws a freehand shape."),wxITEM_CHECK);
toolBar->AddTool(BUTTON_FREEHAND_SMOOTH,_("Freehand smooth"),GETIMAGE(visual_vector_clip_freehand_smooth_24),_("Draws a smoothed freehand shape."),wxITEM_CHECK);
toolBar->ToggleTool(BUTTON_DRAG,true);
toolBar->Realize();
toolBar->Show(true);
DoRefresh();
SetMode(features.empty());
}
void VisualToolVectorClip::OnSubTool(wxCommandEvent &event) {
SetMode(event.GetId() - BUTTON_DRAG);
}
void VisualToolVectorClip::SetMode(int newMode) {
// Manually enforce radio behavior as we want one selection in the bar
// rather than one per group
for (int i=BUTTON_DRAG;i<BUTTON_LAST;i++) {
toolBar->ToggleTool(i,i == newMode + BUTTON_DRAG);
}
mode = newMode;
}
// Substitute for glMultiDrawArrays for sub-1.4 OpenGL
static void APIENTRY glMultiDrawArraysFallback(GLenum mode, GLint *first, GLsizei *count, GLsizei primcount) {
for (int i = 0; i < primcount; ++i) {
glDrawArrays(mode, *first++, *count++);
}
}
static bool is_move(SplineCurve const& c) {
return c.type == CURVE_POINT;
}
void VisualToolVectorClip::Draw() {
if (!curDiag) return;
if (spline.empty()) return;
GL_EXT(PFNGLMULTIDRAWARRAYSPROC, glMultiDrawArrays);
// Parse vector
std::vector<float> points;
std::vector<int> start;
std::vector<int> count;
spline.GetPointList(points, start, count);
assert(!start.empty());
assert(!count.empty());
glEnableClientState(GL_VERTEX_ARRAY);
glVertexPointer(2, GL_FLOAT, 0, &points[0]);
// The following is nonzero winding-number PIP based on stencils
// Draw to stencil only
glEnable(GL_STENCIL_TEST);
glColorMask(0, 0, 0, 0);
// GL_INCR_WRAP was added in 1.4, so instead set the entire stencil to 128
// and wobble from there
glStencilFunc(GL_NEVER, 128, 0xFF);
glStencilOp(GL_REPLACE, GL_REPLACE, GL_REPLACE);
DrawRectangle(0,0,video.w,video.h);
// Increment the winding number for each forward facing triangle
glStencilOp(GL_INCR, GL_INCR, GL_INCR);
glEnable(GL_CULL_FACE);
glCullFace(GL_BACK);
glMultiDrawArrays(GL_TRIANGLE_FAN, &start[0], &count[0], start.size());
// Decrement the winding number for each backfacing triangle
glStencilOp(GL_DECR, GL_DECR, GL_DECR);
glCullFace(GL_FRONT);
glMultiDrawArrays(GL_TRIANGLE_FAN, &start[0], &count[0], start.size());
glDisable(GL_CULL_FACE);
// Draw the actual rectangle
glColorMask(1,1,1,1);
SetLineColour(colour[3],0.f);
SetFillColour(wxColour(0,0,0),0.5f);
// VSFilter draws when the winding number is nonzero, so we want to draw the
// mask when the winding number is zero (where 128 is zero due to the lack of
// wrapping combined with unsigned numbers)
glStencilFunc(inverse ? GL_NOTEQUAL : GL_EQUAL, 128, 0xFF);
DrawRectangle(0,0,video.w,video.h);
glDisable(GL_STENCIL_TEST);
// Draw lines
SetFillColour(colour[3],0.f);
SetLineColour(colour[3],1.f,2);
SetModeLine();
glMultiDrawArrays(GL_LINE_LOOP, &start[0], &count[0], start.size());
Vector2D pt;
float t;
Spline::iterator highCurve;
spline.GetClosestParametricPoint(Vector2D(video.x, video.y), highCurve, t, pt);
// Draw highlighted line
if ((mode == 3 || mode == 4) && !curFeature && points.size() > 2) {
std::vector<float> highPoints;
spline.GetPointList(highPoints, highCurve);
if (!highPoints.empty()) {
glVertexPointer(2, GL_FLOAT, 0, &highPoints[0]);
SetLineColour(colour[2], 1.f, 2);
SetModeLine();
glDrawArrays(GL_LINE_STRIP, 0, highPoints.size() / 2);
}
}
glDisableClientState(GL_VERTEX_ARRAY);
// Draw lines connecting the bicubic features
SetLineColour(colour[3],0.9f,1);
for (Spline::iterator cur=spline.begin();cur!=spline.end();cur++) {
if (cur->type == CURVE_BICUBIC) {
DrawDashedLine(cur->p1.x,cur->p1.y,cur->p2.x,cur->p2.y,6);
DrawDashedLine(cur->p3.x,cur->p3.y,cur->p4.x,cur->p4.y,6);
}
}
DrawAllFeatures();
// Draw preview of inserted line
if (mode == 1 || mode == 2) {
if (spline.size() && video.x > INT_MIN && video.y > INT_MIN) {
Spline::reverse_iterator c0 = std::find_if(spline.rbegin(), spline.rend(), is_move);
SplineCurve *c1 = &spline.back();
DrawDashedLine(video.x,video.y,c0->p1.x,c0->p1.y,6);
DrawDashedLine(video.x,video.y,c1->EndPoint().x,c1->EndPoint().y,6);
}
}
// Draw preview of insert point
if (mode == 4) DrawCircle(pt.x,pt.y,4);
}
void VisualToolVectorClip::MakeFeature(Spline::iterator cur) {
VisualToolVectorClipDraggableFeature feat;
if (cur->type == CURVE_POINT) {
feat.x = (int)cur->p1.x;
feat.y = (int)cur->p1.y;
feat.type = DRAG_SMALL_CIRCLE;
feat.curve = cur;
feat.point = 0;
features.push_back(feat);
}
else if (cur->type == CURVE_LINE) {
feat.x = (int)cur->p2.x;
feat.y = (int)cur->p2.y;
feat.type = DRAG_SMALL_CIRCLE;
feat.curve = cur;
feat.point = 1;
features.push_back(feat);
}
else if (cur->type == CURVE_BICUBIC) {
// Control points
feat.x = (int)cur->p2.x;
feat.y = (int)cur->p2.y;
feat.curve = cur;
feat.point = 1;
feat.type = DRAG_SMALL_SQUARE;
features.push_back(feat);
feat.x = (int)cur->p3.x;
feat.y = (int)cur->p3.y;
feat.point = 2;
features.push_back(feat);
// End point
feat.x = (int)cur->p4.x;
feat.y = (int)cur->p4.y;
feat.type = DRAG_SMALL_CIRCLE;
feat.point = 3;
features.push_back(feat);
}
}
void VisualToolVectorClip::PopulateFeatureList() {
features.clear();
// This is perhaps a bit conservative as there can be up to 3N+1 features
features.reserve(spline.size());
for (Spline::iterator cur = spline.begin(); cur != spline.end(); ++cur) {
MakeFeature(cur);
}
}
void VisualToolVectorClip::UpdateDrag(VisualToolVectorClipDraggableFeature* feature) {
spline.MovePoint(feature->curve,feature->point,Vector2D(feature->x,feature->y));
}
void VisualToolVectorClip::CommitDrag(VisualToolVectorClipDraggableFeature*) {
SetOverride(curDiag, inverse ? L"\\iclip" : L"\\clip", L"(" + spline.EncodeToASS() + L")");
}
bool VisualToolVectorClip::InitializeDrag(VisualToolVectorClipDraggableFeature* feature) {
// Delete a control point
if (mode == 5) {
// Update next
Spline::iterator next = feature->curve;
next++;
if (next != spline.end()) {
if (feature->curve->type == CURVE_POINT) {
next->p1 = next->EndPoint();
next->type = CURVE_POINT;
}
else {
next->p1 = feature->curve->p1;
}
}
// Erase and save changes
spline.erase(feature->curve);
CommitDrag(feature);
curFeature = NULL;
PopulateFeatureList();
ClearSelection();
Commit(true);
return false;
}
return true;
}
bool VisualToolVectorClip::InitializeHold() {
// Insert line/bicubic
if (mode == 1 || mode == 2) {
SplineCurve curve;
// Set start position
if (!spline.empty()) {
curve.p1 = spline.back().EndPoint();
if (mode == 1) curve.type = CURVE_LINE;
else curve.type = CURVE_BICUBIC;
}
// First point
else {
curve.p1 = Vector2D(video.x,video.y);
curve.type = CURVE_POINT;
}
// Insert
spline.push_back(curve);
ClearSelection();
MakeFeature(--spline.end());
UpdateHold();
return true;
}
// Convert and insert
if (mode == 3 || mode == 4) {
// Get closest point
Vector2D pt;
Spline::iterator curve;
float t;
spline.GetClosestParametricPoint(Vector2D(video.x,video.y),curve,t,pt);
// Convert
if (mode == 3) {
if (curve != spline.end()) {
if (curve->type == CURVE_LINE) {
curve->type = CURVE_BICUBIC;
curve->p4 = curve->p2;
curve->p2 = curve->p1 * 0.75 + curve->p4 * 0.25;
curve->p3 = curve->p1 * 0.25 + curve->p4 * 0.75;
}
else if (curve->type == CURVE_BICUBIC) {
curve->type = CURVE_LINE;
curve->p2 = curve->p4;
}
}
}
// Insert
else {
// Check if there is at least one curve to split
if (spline.empty()) return false;
// Split the curve
if (curve == spline.end()) {
SplineCurve ct;
ct.type = CURVE_LINE;
ct.p1 = spline.back().EndPoint();
ct.p2 = spline.front().p1;
ct.p2 = ct.p1*(1-t) + ct.p2*t;
spline.push_back(ct);
}
else {
SplineCurve c2;
curve->Split(*curve,c2,t);
spline.insert(++curve, c2);
}
}
// Commit
SetOverride(curDiag, inverse ? L"\\iclip" : L"\\clip", L"(" + spline.EncodeToASS() + L")");
Commit(true);
DoRefresh();
return false;
}
// Freehand
if (mode == 6 || mode == 7) {
ClearSelection();
features.clear();
spline.clear();
SplineCurve curve;
curve.type = CURVE_POINT;
curve.p1.x = video.x;
curve.p1.y = video.y;
spline.push_back(curve);
return true;
}
return false;
}
void VisualToolVectorClip::UpdateHold() {
// Insert line
if (mode == 1) {
spline.back().EndPoint() = Vector2D(video.x,video.y);
features.back().x = video.x;
features.back().y = video.y;
}
// Insert bicubic
else if (mode == 2) {
SplineCurve &curve = spline.back();
curve.EndPoint() = Vector2D(video.x,video.y);
// Control points
if (spline.size() > 1) {
std::list<SplineCurve>::reverse_iterator iter = spline.rbegin();
iter++;
SplineCurve &c0 = *iter;
Vector2D prevVector;
float len = (curve.p4-curve.p1).Len();
if (c0.type == CURVE_LINE) prevVector = c0.p2-c0.p1;
else prevVector = c0.p4-c0.p3;
curve.p2 = prevVector.Unit() * (0.25f*len) + curve.p1;
}
else curve.p2 = curve.p1 * 0.75 + curve.p4 * 0.25;
curve.p3 = curve.p1 * 0.25 + curve.p4 * 0.75;
PopulateFeatureList();
}
// Freehand
else if (mode == 6 || mode == 7) {
// See if distance is enough
Vector2D const& last = spline.back().EndPoint();
int len = (int)Vector2D(last.x-video.x, last.y-video.y).Len();
if (mode == 6 && len < 30) return;
if (mode == 7 && len < 60) return;
// Generate curve and add it
SplineCurve curve;
curve.type = CURVE_LINE;
curve.p1 = Vector2D(last.x,last.y);
curve.p2 = Vector2D(video.x,video.y);
spline.push_back(curve);
MakeFeature(--spline.end());
}
}
void VisualToolVectorClip::CommitHold() {
// Smooth spline
if (!holding && mode == 7) {
spline.Smooth();
PopulateFeatureList();
}
// Save it
if (mode != 3 && mode != 4) {
SetOverride(curDiag, inverse ? L"\\iclip" : L"\\clip", L"(" + spline.EncodeToASS() + L")");
}
// End freedraw
if (!holding && (mode == 6 || mode == 7)) {
SetMode(0);
SelectAll();
}
}
void VisualToolVectorClip::DoRefresh() {
if (!curDiag) return;
wxString vect;
int scale;
vect = GetLineVectorClip(curDiag,scale,inverse);
spline.DecodeFromASS(vect);
SelectAll();
PopulateFeatureList();
}
void VisualToolVectorClip::SelectAll() {
ClearSelection();
for (size_t i = 0; i < features.size(); ++i) {
AddSelection(i);
}
}