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Contourfill now uses a kind of 'additive XOR' lines : Pixels stay marked even if you pass over them several times.

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git-svn-id: svn://pulkomandy.tk/GrafX2/trunk@588 416bcca6-2ee7-4201-b75f-2eb2f807beb1
This commit is contained in:
Yves Rizoud
2009-02-03 21:58:25 +00:00
parent daf5f99979
commit 0c26dc6459
3 changed files with 34 additions and 2 deletions
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22
graph.c
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@@ -855,6 +855,18 @@ void Remplir(byte Couleur_de_remplissage)
Pixel_Preview(Pos_X,Pos_Y,~Lit_pixel(Pos_X-Principal_Decalage_X,
Pos_Y-Principal_Decalage_Y));
}
// Affichage d'un point pour une preview en xor additif
// (Il lit la couleur depuis la page backup)
void Pixel_figure_Preview_xorback(word Pos_X,word Pos_Y,__attribute__((unused)) byte Couleur)
{
if ( (Pos_X>=Limite_Gauche) &&
(Pos_X<=Limite_Droite) &&
(Pos_Y>=Limite_Haut) &&
(Pos_Y<=Limite_Bas) )
Pixel_Preview(Pos_X,Pos_Y,~Ecran_backup[Pos_X+Pos_Y*Principal_Largeur_image]);
}
// Effacement d'un point de preview
void Pixel_figure_Effacer_preview(word Pos_X,word Pos_Y,__attribute__((unused)) byte Couleur)
@@ -1294,6 +1306,16 @@ void Tracer_ligne_Preview_xor(short Debut_X,short Debut_Y,short Fin_X,short Fin_
Mettre_Ecran_A_Jour((Debut_X<Fin_X)?Debut_X:Fin_X,(Debut_Y<Fin_Y)?Debut_Y:Fin_Y,abs(L)+1,abs(H)+1);
}
// -- Tracer la preview d'une ligne en xor additif --
void Tracer_ligne_Preview_xorback(short Debut_X,short Debut_Y,short Fin_X,short Fin_Y,byte Couleur)
{
int L = Fin_X-Debut_X, H = Fin_Y - Debut_Y;
Pixel_figure=Pixel_figure_Preview_xorback;
Tracer_ligne_General(Debut_X,Debut_Y,Fin_X,Fin_Y,Couleur);
Mettre_Ecran_A_Jour((Debut_X<Fin_X)?Debut_X:Fin_X,(Debut_Y<Fin_Y)?Debut_Y:Fin_Y,abs(L)+1,abs(H)+1);
}
// -- Effacer la preview d'une ligne --
void Effacer_ligne_Preview(short Debut_X,short Debut_Y,short Fin_X,short Fin_Y)