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Remove Ellipse_cursor_X/Y and Circle_cursor_X/Y global variables

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This commit is contained in:
Thomas Bernard 2018-03-03 01:47:28 +01:00
parent 6be7cb1e9f
commit 6b97fcc322
2 changed files with 41 additions and 41 deletions
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4
src/global.h
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@ -568,13 +568,9 @@ GFX2_GLOBAL byte Mask_table[256];
// -- Data for ellipses and circles
// FIXME: move most of these to graph.c
GFX2_GLOBAL long Ellipse_cursor_X;
GFX2_GLOBAL long Ellipse_cursor_Y;
GFX2_GLOBAL long Ellipse_vertical_radius_squared;
GFX2_GLOBAL long Ellipse_horizontal_radius_squared;
GFX2_GLOBAL qword Ellipse_limit;
GFX2_GLOBAL long Circle_cursor_X;
GFX2_GLOBAL long Circle_cursor_Y;
GFX2_GLOBAL long Circle_limit;
// -- Data for gradients

78
src/graph.c
View File

@ -79,10 +79,10 @@ static void Ellipse_compute_limites(short horizontal_radius,short vertical_radiu
// Ellipse_cursor_Y pixels (Ellipse_cursor_Y>0 = en bas,
// Ellipse_cursor_Y<0 = en haut) du centre se trouve dans l'ellipse en
// cours.
static byte Pixel_in_ellipse(void)
static byte Pixel_in_ellipse(long x, long y)
{
qword ediesi = (qword)Ellipse_cursor_X * Ellipse_cursor_X * Ellipse_vertical_radius_squared +
(qword)Ellipse_cursor_Y * Ellipse_cursor_Y * Ellipse_horizontal_radius_squared;
qword ediesi = (qword)x * x * Ellipse_vertical_radius_squared +
(qword)y * y * Ellipse_horizontal_radius_squared;
if((ediesi) <= Ellipse_limit) return 255;
return 0;
@ -93,10 +93,9 @@ static byte Pixel_in_ellipse(void)
// Circle_cursor_Y pixels (Circle_cursor_Y>0 = en bas,
// Circle_cursor_Y<0 = en haut) du centre se trouve dans le cercle en
// cours.
static byte Pixel_in_circle(void)
static byte Pixel_in_circle(long x, long y)
{
if(Circle_cursor_X * Circle_cursor_X +
Circle_cursor_Y * Circle_cursor_Y <= Circle_limit)
if((x * x + y * y) <= Circle_limit)
return 255;
return 0;
}
@ -1215,15 +1214,16 @@ void Draw_empty_circle_general(short center_x,short center_y,short radius,byte c
short start_y;
short x_pos;
short y_pos;
long x, y;
// Ensuite, on va parcourire le quart haut gauche du cercle
start_x=center_x-radius;
start_y=center_y-radius;
// Affichage des extremitées du cercle sur chaque quart du cercle:
for (y_pos=start_y,Circle_cursor_Y=-radius;y_pos<center_y;y_pos++,Circle_cursor_Y++)
for (x_pos=start_x,Circle_cursor_X=-radius;x_pos<center_x;x_pos++,Circle_cursor_X++)
if (Pixel_in_circle())
for (y_pos=start_y,y=-radius;y_pos<center_y;y_pos++,y++)
for (x_pos=start_x,x=-radius;x_pos<center_x;x_pos++,x++)
if (Pixel_in_circle(x, y))
{
// On vient de tomber sur le premier point sur la ligne horizontale
// qui fait partie du cercle.
@ -1240,8 +1240,8 @@ void Draw_empty_circle_general(short center_x,short center_y,short radius,byte c
// On peut ensuite afficher tous les points qui le suivent dont le
// pixel voisin du haut n'appartient pas au cercle:
for (Circle_cursor_Y--,x_pos++,Circle_cursor_X++;x_pos<center_x;x_pos++,Circle_cursor_X++)
if (!Pixel_in_circle())
for (y--,x_pos++,x++;x_pos<center_x;x_pos++,x++)
if (!Pixel_in_circle(x, y))
{
// Quart Haut-gauche
Pixel_figure(x_pos,y_pos,color);
@ -1255,7 +1255,7 @@ void Draw_empty_circle_general(short center_x,short center_y,short radius,byte c
else
break;
Circle_cursor_Y++;
y++;
break;
}
@ -1305,6 +1305,7 @@ void Draw_filled_circle(short center_x,short center_y,short radius,byte color)
short y_pos;
short end_x;
short end_y;
long x, y;
start_x=center_x-radius;
start_y=center_y-radius;
@ -1322,9 +1323,9 @@ void Draw_filled_circle(short center_x,short center_y,short radius,byte color)
end_x=Limit_right;
// Affichage du cercle
for (y_pos=start_y,Circle_cursor_Y=(long)start_y-center_y;y_pos<=end_y;y_pos++,Circle_cursor_Y++)
for (x_pos=start_x,Circle_cursor_X=(long)start_x-center_x;x_pos<=end_x;x_pos++,Circle_cursor_X++)
if (Pixel_in_circle())
for (y_pos=start_y,y=(long)start_y-center_y;y_pos<=end_y;y_pos++,y++)
for (x_pos=start_x,x=(long)start_x-center_x;x_pos<=end_x;x_pos++,x++)
if (Pixel_in_circle(x, y))
Display_pixel(x_pos,y_pos,color);
Update_part_of_screen(start_x,start_y,end_x+1-start_x,end_y+1-start_y);
@ -1353,6 +1354,7 @@ void Draw_empty_ellipse_general(short center_x,short center_y,short horizontal_r
short start_y;
short x_pos;
short y_pos;
long x, y;
start_x=center_x-horizontal_radius;
start_y=center_y-vertical_radius;
@ -1361,9 +1363,9 @@ void Draw_empty_ellipse_general(short center_x,short center_y,short horizontal_r
Ellipse_compute_limites(horizontal_radius+1,vertical_radius+1);
// Affichage des extremitées de l'ellipse sur chaque quart de l'ellipse:
for (y_pos=start_y,Ellipse_cursor_Y=-vertical_radius;y_pos<center_y;y_pos++,Ellipse_cursor_Y++)
for (x_pos=start_x,Ellipse_cursor_X=-horizontal_radius;x_pos<center_x;x_pos++,Ellipse_cursor_X++)
if (Pixel_in_ellipse())
for (y_pos=start_y,y=-vertical_radius;y_pos<center_y;y_pos++,y++)
for (x_pos=start_x,x=-horizontal_radius;x_pos<center_x;x_pos++,x++)
if (Pixel_in_ellipse(x, y))
{
// On vient de tomber sur le premier point qui sur la ligne
// horizontale fait partie de l'ellipse.
@ -1381,8 +1383,8 @@ void Draw_empty_ellipse_general(short center_x,short center_y,short horizontal_r
// On peut ensuite afficher tous les points qui le suivent dont le
// pixel voisin du haut n'appartient pas à l'ellipse:
for (Ellipse_cursor_Y--,x_pos++,Ellipse_cursor_X++;x_pos<center_x;x_pos++,Ellipse_cursor_X++)
if (!Pixel_in_ellipse())
for (y--,x_pos++,x++;x_pos<center_x;x_pos++,x++)
if (!Pixel_in_ellipse(x, y))
{
// Quart Haut-gauche
Pixel_figure(x_pos,y_pos,color);
@ -1396,7 +1398,7 @@ void Draw_empty_ellipse_general(short center_x,short center_y,short horizontal_r
else
break;
Ellipse_cursor_Y++;
y++;
break;
}
@ -1404,16 +1406,16 @@ void Draw_empty_ellipse_general(short center_x,short center_y,short horizontal_r
// points verticaux:
x_pos=center_x;
Ellipse_cursor_X=-1;
for (y_pos=center_y+1-vertical_radius,Ellipse_cursor_Y=-vertical_radius+1;y_pos<center_y+vertical_radius;y_pos++,Ellipse_cursor_Y++)
if (!Pixel_in_ellipse())
x=-1;
for (y_pos=center_y+1-vertical_radius,y=-vertical_radius+1;y_pos<center_y+vertical_radius;y_pos++,y++)
if (!Pixel_in_ellipse(x, y))
Pixel_figure(x_pos,y_pos,color);
// points horizontaux:
y_pos=center_y;
Ellipse_cursor_Y=-1;
for (x_pos=center_x+1-horizontal_radius,Ellipse_cursor_X=-horizontal_radius+1;x_pos<center_x+horizontal_radius;x_pos++,Ellipse_cursor_X++)
if (!Pixel_in_ellipse())
y=-1;
for (x_pos=center_x+1-horizontal_radius,x=-horizontal_radius+1;x_pos<center_x+horizontal_radius;x_pos++,x++)
if (!Pixel_in_ellipse(x, y))
Pixel_figure(x_pos,y_pos,color);
Pixel_figure(center_x,center_y-vertical_radius,color); // Haut
@ -1462,6 +1464,7 @@ void Draw_filled_ellipse(short center_x,short center_y,short horizontal_radius,s
short y_pos;
short end_x;
short end_y;
long x, y;
start_x=center_x-horizontal_radius;
start_y=center_y-vertical_radius;
@ -1482,9 +1485,9 @@ void Draw_filled_ellipse(short center_x,short center_y,short horizontal_radius,s
end_x=Limit_right;
// Affichage de l'ellipse
for (y_pos=start_y,Ellipse_cursor_Y=start_y-center_y;y_pos<=end_y;y_pos++,Ellipse_cursor_Y++)
for (x_pos=start_x,Ellipse_cursor_X=start_x-center_x;x_pos<=end_x;x_pos++,Ellipse_cursor_X++)
if (Pixel_in_ellipse())
for (y_pos=start_y,y=start_y-center_y;y_pos<=end_y;y_pos++,y++)
for (x_pos=start_x,x=start_x-center_x;x_pos<=end_x;x_pos++,x++)
if (Pixel_in_ellipse(x, y))
Display_pixel(x_pos,y_pos,color);
Update_part_of_screen(center_x-horizontal_radius,center_y-vertical_radius,2*horizontal_radius+1,2*vertical_radius+1);
}
@ -2203,6 +2206,7 @@ void Draw_grad_circle(short center_x,short center_y,short radius,short spot_x,sh
long end_y;
long distance_x; // Distance (au carré) sur les X du point en cours au centre d'éclairage
long distance_y; // Distance (au carré) sur les Y du point en cours au centre d'éclairage
long x, y;
start_x=center_x-radius;
start_y=center_y-radius;
@ -2230,12 +2234,12 @@ void Draw_grad_circle(short center_x,short center_y,short radius,short spot_x,sh
Gradient_total_range=1;
// Affichage du cercle
for (y_pos=start_y,Circle_cursor_Y=(long)start_y-center_y;y_pos<=end_y;y_pos++,Circle_cursor_Y++)
for (y_pos=start_y,y=(long)start_y-center_y;y_pos<=end_y;y_pos++,y++)
{
distance_y =(y_pos-spot_y);
distance_y*=distance_y;
for (x_pos=start_x,Circle_cursor_X=(long)start_x-center_x;x_pos<=end_x;x_pos++,Circle_cursor_X++)
if (Pixel_in_circle())
for (x_pos=start_x,x=(long)start_x-center_x;x_pos<=end_x;x_pos++,x++)
if (Pixel_in_circle(x, y))
{
distance_x =(x_pos-spot_x);
distance_x*=distance_x;
@ -2259,7 +2263,7 @@ void Draw_grad_ellipse(short center_x,short center_y,short horizontal_radius,sho
long end_y;
long distance_x; // Distance (au carré) sur les X du point en cours au centre d'éclairage
long distance_y; // Distance (au carré) sur les Y du point en cours au centre d'éclairage
long x, y;
start_x=center_x-horizontal_radius;
start_y=center_y-vertical_radius;
@ -2296,12 +2300,12 @@ void Draw_grad_ellipse(short center_x,short center_y,short horizontal_radius,sho
end_x=Limit_right;
// Affichage de l'ellipse
for (y_pos=start_y,Ellipse_cursor_Y=start_y-center_y;y_pos<=end_y;y_pos++,Ellipse_cursor_Y++)
for (y_pos=start_y,y=start_y-center_y;y_pos<=end_y;y_pos++,y++)
{
distance_y =(y_pos-spot_y);
distance_y*=distance_y;
for (x_pos=start_x,Ellipse_cursor_X=start_x-center_x;x_pos<=end_x;x_pos++,Ellipse_cursor_X++)
if (Pixel_in_ellipse())
for (x_pos=start_x,x=start_x-center_x;x_pos<=end_x;x_pos++,x++)
if (Pixel_in_ellipse(x, y))
{
distance_x =(x_pos-spot_x);
distance_x*=distance_x;