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Add code to draw arrows on the board

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Loic Guegan 2023-01-06 20:34:14 +01:00
parent a9eb4e0569
commit b64489be9e
2 changed files with 40 additions and 0 deletions
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37
src/game_tab/left_panel/board/BoardCanvas.cpp
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@ -1,5 +1,11 @@
#include "BoardCanvas.hpp"
#define TRANS(PT) { \
wxPoint2DDouble tmp((PT).x,(PT).y); \
tmp=rot_m.TransformPoint(tmp); \
tmp=trans_m.TransformPoint(tmp); \
(PT).x=tmp.m_x;(PT).y=tmp.m_y;}
wxDEFINE_EVENT(PLAY_MOVE_EVENT, wxCommandEvent);
BoardCanvas::BoardCanvas(wxFrame *parent)
@ -462,3 +468,34 @@ void BoardCanvas::SetClockTime(short hours, short min, short sec,
gs.white_time = std::make_tuple(hours, min, sec);
}
}
void BoardCanvas::DrawArrow(wxDC &dc, int xsrc, int ysrc, int xdst, int ydst){
// Compute arrow length and angle
wxPoint vect(xdst-xsrc,ydst-ysrc);
double length=sqrt(pow(vect.x,2)+pow(vect.y,2));
double angle=acos(vect.x/length);
// Compute metrics
std::uint8_t thickness=50;
std::uint8_t tip_height=sqrt(3)/2*thickness;
std::uint32_t tail_length=length-tip_height;
// Setup transform matrix
wxAffineMatrix2D rot_m,trans_m;
rot_m.Rotate(angle);
trans_m.Translate(xsrc,ysrc);
// Init polygons
wxPoint tip[]={wxPoint(tail_length,-thickness/2),wxPoint(tail_length,thickness/2),wxPoint(tail_length+tip_height,0)};
wxPoint tail[]={wxPoint(0,-thickness/4),wxPoint(tail_length,-thickness/4),wxPoint(tail_length,thickness/4),wxPoint(0,thickness/4)};
// Transform points
TRANS(tip[0]);TRANS(tip[1]);TRANS(tip[2]);
TRANS(tail[0]);TRANS(tail[1]);TRANS(tail[2]);TRANS(tail[3]);
// Draw
dc.SetPen(wxNullPen);
dc.SetBrush(wxColour(255,0,0));
dc.DrawPolygon(3,tip);
dc.DrawPolygon(4,tail);
}

3
src/game_tab/left_panel/board/BoardCanvas.hpp
View file

@ -91,6 +91,9 @@ class BoardCanvas : public wxPanel {
AnimState adata;
GameState gs;
/// @brief Draw an arrow from a source point to a destination point on DC
void DrawArrow(wxDC &dc, int xsrc, int ysrc, int xdst, int ydst);
public:
BoardCanvas(wxFrame *parent);
BoardCanvas(wxFrame *parent,std::uint32_t square_width, bool frozen);