virtualx-engine/editor/plugins/sprite_editor_plugin.cpp

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2018-05-16 19:19:33 +02:00
/*************************************************************************/
/* sprite_editor_plugin.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md) */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "sprite_editor_plugin.h"
#include "canvas_item_editor_plugin.h"
#include "scene/2d/mesh_instance_2d.h"
#include "scene/gui/box_container.h"
#include "thirdparty/misc/clipper.hpp"
void SpriteEditor::_node_removed(Node *p_node) {
if (p_node == node) {
node = NULL;
options->hide();
}
}
void SpriteEditor::edit(Sprite *p_sprite) {
node = p_sprite;
}
#define PRECISION 10.0
Vector<Vector2> expand(const Vector<Vector2> &points, const Rect2i &rect, float epsilon = 2.0) {
int size = points.size();
ERR_FAIL_COND_V(size < 2, Vector<Vector2>());
ClipperLib::Path subj;
ClipperLib::PolyTree solution;
ClipperLib::PolyTree out;
for (int i = 0; i < points.size(); i++) {
subj << ClipperLib::IntPoint(points[i].x * PRECISION, points[i].y * PRECISION);
}
ClipperLib::ClipperOffset co;
co.AddPath(subj, ClipperLib::jtMiter, ClipperLib::etClosedPolygon);
co.Execute(solution, epsilon * PRECISION);
ClipperLib::PolyNode *p = solution.GetFirst();
ERR_FAIL_COND_V(!p, points);
while (p->IsHole()) {
p = p->GetNext();
}
//turn the result into simply polygon (AKA, fix overlap)
//clamp into the specified rect
ClipperLib::Clipper cl;
cl.StrictlySimple(true);
cl.AddPath(p->Contour, ClipperLib::ptSubject, true);
//create the clipping rect
ClipperLib::Path clamp;
clamp.push_back(ClipperLib::IntPoint(0, 0));
clamp.push_back(ClipperLib::IntPoint(rect.size.width * PRECISION, 0));
clamp.push_back(ClipperLib::IntPoint(rect.size.width * PRECISION, rect.size.height * PRECISION));
clamp.push_back(ClipperLib::IntPoint(0, rect.size.height * PRECISION));
cl.AddPath(clamp, ClipperLib::ptClip, true);
cl.Execute(ClipperLib::ctIntersection, out);
Vector<Vector2> outPoints;
ClipperLib::PolyNode *p2 = out.GetFirst();
while (p2->IsHole()) {
p2 = p2->GetNext();
}
int lasti = p2->Contour.size() - 1;
Vector2 prev = Vector2(p2->Contour[lasti].X / PRECISION, p2->Contour[lasti].Y / PRECISION);
for (int i = 0; i < p2->Contour.size(); i++) {
Vector2 cur = Vector2(p2->Contour[i].X / PRECISION, p2->Contour[i].Y / PRECISION);
if (cur.distance_to(prev) > 0.5) {
outPoints.push_back(cur);
prev = cur;
}
}
return outPoints;
}
void SpriteEditor::_menu_option(int p_option) {
if (!node) {
return;
}
switch (p_option) {
case MENU_OPTION_CREATE_MESH_2D: {
_update_mesh_data();
debug_uv_dialog->popup_centered();
debug_uv->update();
} break;
}
}
void SpriteEditor::_update_mesh_data() {
Ref<Texture> texture = node->get_texture();
if (texture.is_null()) {
err_dialog->set_text(TTR("Sprite is empty!"));
err_dialog->popup_centered_minsize();
return;
}
if (node->get_hframes() > 1 || node->get_vframes() > 1) {
err_dialog->set_text(TTR("Can't convert a sprite using animation frames to mesh."));
err_dialog->popup_centered_minsize();
return;
}
Ref<Image> image = texture->get_data();
ERR_FAIL_COND(image.is_null());
Rect2 rect;
if (node->is_region())
rect = node->get_region_rect();
else
rect.size = Size2(image->get_width(), image->get_height());
Ref<BitMap> bm;
bm.instance();
bm->create_from_image_alpha(image);
int grow = island_merging->get_value();
if (grow > 0) {
bm->grow_mask(grow, rect);
}
float epsilon = simplification->get_value();
Vector<Vector<Vector2> > lines = bm->clip_opaque_to_polygons(rect, epsilon);
print_line("lines: " + itos(lines.size()));
uv_lines.clear();
computed_vertices.clear();
computed_uv.clear();
computed_indices.clear();
Size2 img_size = Vector2(image->get_width(), image->get_height());
for (int j = 0; j < lines.size(); j++) {
lines.write[j] = expand(lines[j], rect, epsilon);
int index_ofs = computed_vertices.size();
for (int i = 0; i < lines[j].size(); i++) {
Vector2 vtx = lines[j][i];
computed_uv.push_back(vtx / img_size);
vtx -= rect.position; //offset by rect position
//flip if flipped
if (node->is_flipped_h())
vtx.x = rect.size.x - vtx.x - 1.0;
if (node->is_flipped_v())
vtx.y = rect.size.y - vtx.y - 1.0;
if (node->is_centered())
vtx -= rect.size / 2.0;
computed_vertices.push_back(vtx);
}
#if 0
Vector<Vector<Vector2> > polys = Geometry::decompose_polygon(lines[j]);
print_line("polygon: " + itos(polys.size()));
for (int i = 0; i < polys.size(); i++) {
for (int k = 0; k < polys[i].size(); k++) {
int idxn = (k + 1) % polys[i].size();
uv_lines.push_back(polys[i][k]);
uv_lines.push_back(polys[i][idxn]);
}
}
#endif
#if 1
Vector<int> poly = Geometry::triangulate_polygon(lines[j]);
for (int i = 0; i < poly.size(); i += 3) {
for (int k = 0; k < 3; k++) {
int idx = i + k;
int idxn = i + (k + 1) % 3;
uv_lines.push_back(lines[j][poly[idx]]);
uv_lines.push_back(lines[j][poly[idxn]]);
computed_indices.push_back(poly[idx] + index_ofs);
}
}
#endif
#if 0
for (int i = 0; i < lines[j].size() - 1; i++) {
uv_lines.push_back(lines[j][i]);
uv_lines.push_back(lines[j][i + 1]);
}
#endif
}
debug_uv->update();
}
void SpriteEditor::_create_mesh_node() {
if (computed_vertices.size() < 3) {
err_dialog->set_text(TTR("Invalid geometry, can't replace by mesh."));
err_dialog->popup_centered_minsize();
return;
}
Ref<ArrayMesh> mesh;
mesh.instance();
Array a;
a.resize(Mesh::ARRAY_MAX);
a[Mesh::ARRAY_VERTEX] = computed_vertices;
a[Mesh::ARRAY_TEX_UV] = computed_uv;
a[Mesh::ARRAY_INDEX] = computed_indices;
mesh->add_surface_from_arrays(Mesh::PRIMITIVE_TRIANGLES, a, Array(), Mesh::ARRAY_FLAG_USE_2D_VERTICES);
MeshInstance2D *mesh_instance = memnew(MeshInstance2D);
mesh_instance->set_mesh(mesh);
EditorNode::get_singleton()->get_scene_tree_dock()->replace_node(node, mesh_instance);
}
#if 0
void SpriteEditor::_create_uv_lines() {
Ref<Mesh> sprite = node->get_sprite();
ERR_FAIL_COND(!sprite.is_valid());
Set<SpriteEditorEdgeSort> edges;
uv_lines.clear();
for (int i = 0; i < sprite->get_surface_count(); i++) {
if (sprite->surface_get_primitive_type(i) != Mesh::PRIMITIVE_TRIANGLES)
continue;
Array a = sprite->surface_get_arrays(i);
PoolVector<Vector2> uv = a[p_layer == 0 ? Mesh::ARRAY_TEX_UV : Mesh::ARRAY_TEX_UV2];
if (uv.size() == 0) {
err_dialog->set_text(TTR("Model has no UV in this layer"));
err_dialog->popup_centered_minsize();
return;
}
PoolVector<Vector2>::Read r = uv.read();
PoolVector<int> indices = a[Mesh::ARRAY_INDEX];
PoolVector<int>::Read ri;
int ic;
bool use_indices;
if (indices.size()) {
ic = indices.size();
ri = indices.read();
use_indices = true;
} else {
ic = uv.size();
use_indices = false;
}
for (int j = 0; j < ic; j += 3) {
for (int k = 0; k < 3; k++) {
SpriteEditorEdgeSort edge;
if (use_indices) {
edge.a = r[ri[j + k]];
edge.b = r[ri[j + ((k + 1) % 3)]];
} else {
edge.a = r[j + k];
edge.b = r[j + ((k + 1) % 3)];
}
if (edges.has(edge))
continue;
uv_lines.push_back(edge.a);
uv_lines.push_back(edge.b);
edges.insert(edge);
}
}
}
debug_uv_dialog->popup_centered_minsize();
}
#endif
void SpriteEditor::_debug_uv_draw() {
if (uv_lines.size() == 0)
return;
Ref<Texture> tex = node->get_texture();
ERR_FAIL_COND(!tex.is_valid());
debug_uv->set_clip_contents(true);
debug_uv->draw_texture(tex, Point2());
debug_uv->set_custom_minimum_size(tex->get_size());
//debug_uv->draw_set_transform(Vector2(), 0, debug_uv->get_size());
debug_uv->draw_multiline(uv_lines, Color(1.0, 0.8, 0.7));
}
void SpriteEditor::_bind_methods() {
ClassDB::bind_method("_menu_option", &SpriteEditor::_menu_option);
ClassDB::bind_method("_debug_uv_draw", &SpriteEditor::_debug_uv_draw);
ClassDB::bind_method("_update_mesh_data", &SpriteEditor::_update_mesh_data);
ClassDB::bind_method("_create_mesh_node", &SpriteEditor::_create_mesh_node);
}
SpriteEditor::SpriteEditor() {
options = memnew(MenuButton);
CanvasItemEditor::get_singleton()->add_control_to_menu_panel(options);
options->set_text(TTR("Sprite"));
options->set_icon(EditorNode::get_singleton()->get_gui_base()->get_icon("Sprite", "EditorIcons"));
options->get_popup()->add_item(TTR("Convert to 2D Mesh"), MENU_OPTION_CREATE_MESH_2D);
options->get_popup()->connect("id_pressed", this, "_menu_option");
err_dialog = memnew(AcceptDialog);
add_child(err_dialog);
debug_uv_dialog = memnew(ConfirmationDialog);
debug_uv_dialog->get_ok()->set_text(TTR("Create 2D Mesh"));
debug_uv_dialog->set_title("Mesh 2D Preview");
VBoxContainer *vb = memnew(VBoxContainer);
debug_uv_dialog->add_child(vb);
ScrollContainer *scroll = memnew(ScrollContainer);
scroll->set_custom_minimum_size(Size2(800, 500) * EDSCALE);
scroll->set_enable_h_scroll(true);
scroll->set_enable_v_scroll(true);
vb->add_margin_child(TTR("Preview:"), scroll, true);
debug_uv = memnew(Control);
debug_uv->connect("draw", this, "_debug_uv_draw");
scroll->add_child(debug_uv);
debug_uv_dialog->connect("confirmed", this, "_create_mesh_node");
HBoxContainer *hb = memnew(HBoxContainer);
hb->add_child(memnew(Label(TTR("Simplification: "))));
simplification = memnew(SpinBox);
simplification->set_min(0.01);
simplification->set_max(10.00);
simplification->set_step(0.01);
simplification->set_value(2);
hb->add_child(simplification);
hb->add_spacer();
hb->add_child(memnew(Label(TTR("Grow (Pixels): "))));
island_merging = memnew(SpinBox);
island_merging->set_min(0);
island_merging->set_max(10);
island_merging->set_step(1);
island_merging->set_value(2);
hb->add_child(island_merging);
hb->add_spacer();
update_preview = memnew(Button);
update_preview->set_text(TTR("Update Preview"));
update_preview->connect("pressed", this, "_update_mesh_data");
hb->add_child(update_preview);
vb->add_margin_child(TTR("Settings:"), hb);
add_child(debug_uv_dialog);
}
void SpriteEditorPlugin::edit(Object *p_object) {
sprite_editor->edit(Object::cast_to<Sprite>(p_object));
}
bool SpriteEditorPlugin::handles(Object *p_object) const {
return p_object->is_class("Sprite");
}
void SpriteEditorPlugin::make_visible(bool p_visible) {
if (p_visible) {
sprite_editor->options->show();
} else {
sprite_editor->options->hide();
sprite_editor->edit(NULL);
}
}
SpriteEditorPlugin::SpriteEditorPlugin(EditorNode *p_node) {
editor = p_node;
sprite_editor = memnew(SpriteEditor);
editor->get_viewport()->add_child(sprite_editor);
make_visible(false);
//sprite_editor->options->hide();
}
SpriteEditorPlugin::~SpriteEditorPlugin() {
}