91 lines
3.2 KiB
C++
91 lines
3.2 KiB
C++
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#include "LassoSelectTool.hpp"
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#include "DrawingProgram.hpp"
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#include "../MainProgram.hpp"
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#include "../DrawData.hpp"
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#include "Helpers/MathExtras.hpp"
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#include "Helpers/SCollision.hpp"
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#include "../CoordSpaceHelper.hpp"
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#include <ranges>
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#include <delaunator.hpp>
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LassoSelectTool::LassoSelectTool(DrawingProgram& initDrawP):
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drawP(initDrawP)
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{
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}
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void LassoSelectTool::gui_toolbox() {
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drawP.world.main.toolbar.gui.text_label_centered("Lasso Select");
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}
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void LassoSelectTool::reset_tool() {
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drawP.selection.deselect_all();
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controls = LassoSelectControls();
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}
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void LassoSelectTool::tool_update() {
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switch(controls.selectionMode) {
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case 0: {
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if(drawP.controls.leftClick) {
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if(drawP.selection.is_something_selected()) {
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if(!drawP.selection.mouse_collided_with_selection())
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reset_tool();
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}
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else {
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reset_tool();
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controls.coords = drawP.world.drawData.cam.c;
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controls.lassoPoints.emplace_back(controls.coords.get_mouse_pos(drawP.world));
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controls.selectionMode = 1;
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}
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}
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break;
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}
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case 1: {
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using namespace SCollision;
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Vector2f newLassoPoint = controls.coords.get_mouse_pos(drawP.world);
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if(vec_distance(controls.lassoPoints.back(), newLassoPoint)) {
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controls.lassoPoints.emplace_back(newLassoPoint);
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}
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if(!drawP.controls.leftClickHeld) {
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std::vector<double> dCoords;
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for(Vector2f& lassoPoint : controls.lassoPoints) {
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dCoords.emplace_back(lassoPoint.x());
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dCoords.emplace_back(lassoPoint.y());
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}
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delaunator::Delaunator d(dCoords);
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ColliderCollection<float> cC;
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for(size_t i = 0; i < d.triangles.size(); i += 3) {
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SCollision::Triangle tri{
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Vector2f{dCoords[2 * d.triangles[i]], dCoords[2 * d.triangles[i] + 1]},
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Vector2f{dCoords[2 * d.triangles[i + 1]], dCoords[2 * d.triangles[i + 1] + 1]},
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Vector2f{dCoords[2 * d.triangles[i + 2]], dCoords[2 * d.triangles[i + 2] + 1]}
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};
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cC.triangle.emplace_back(tri);
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}
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drawP.selection.add_from_cam_coord_collider_to_selection(cC);
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controls.selectionMode = 0;
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}
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break;
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}
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}
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}
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bool LassoSelectTool::prevent_undo_or_redo() {
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return drawP.selection.is_something_selected() || controls.selectionMode == 1;
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}
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void LassoSelectTool::draw(SkCanvas* canvas, const DrawData& drawData) {
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if(controls.selectionMode == 1) {
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canvas->save();
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controls.coords.transform_sk_canvas(canvas, drawData);
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SkPath lassoPath;
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lassoPath.moveTo(convert_vec2<SkPoint>(controls.lassoPoints.front()));
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for(Vector2f& p : controls.lassoPoints | std::views::drop(1))
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lassoPath.lineTo(convert_vec2<SkPoint>(p));
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canvas->drawPath(lassoPath, drawP.select_tool_line_paint());
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canvas->restore();
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}
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}
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