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* src/raster/ftraster.c (Draw_Sweep): Use more natural loop.

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This commit is contained in:
Alexei Podtelezhnikov 2023-11-15 15:17:50 +00:00
parent b0265ccd33
commit c580926f35
1 changed files with 10 additions and 14 deletions
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24
src/raster/ftraster.c
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@ -317,6 +317,7 @@
#define Flow_Up 0x08U
#define Overshoot_Top 0x10U
#define Overshoot_Bottom 0x20U
#define Dropout 0x40U
/* States of each line, arc, and profile */
@ -2447,7 +2448,7 @@
Draw_Sweep( RAS_ARG )
{
Int min_Y, max_Y, dropouts;
Int y, y_change, y_height;
Int y, y_turn;
PProfile *Q, P, P_Left, P_Right;
@ -2465,12 +2466,9 @@
ras.Proc_Sweep_Init( RAS_VARS min_Y, max_Y );
/* let's go, iterating through y_turns */
/* let's go */
y = min_Y;
y_height = min_Y;
while ( ++ras.maxBuff < ras.sizeBuff )
for ( y = min_Y; y <= max_Y; )
{
/* check waiting list for new profile activations */
@ -2478,8 +2476,7 @@
while ( *Q )
{
P = *Q;
P->start -= y_height;
if ( P->start == 0 )
if ( P->start == y )
{
*Q = P->link; /* remove */
@ -2492,8 +2489,7 @@
Q = &P->link;
}
y_change = (Int)*ras.maxBuff;
y_height = y_change - y;
y_turn = (Int)*++ras.maxBuff;
do
{
@ -2530,7 +2526,7 @@
P_Right->X = x2;
/* mark profile for drop-out processing */
P_Left->start = -1;
P_Left->flags |= Dropout;
dropouts++;
}
}
@ -2554,7 +2550,7 @@
Increment( &draw_left );
Increment( &draw_right );
}
while ( ++y < y_change );
while ( ++y < y_turn );
}
return SUCCESS;
@ -2566,9 +2562,9 @@
while ( P_Left && P_Right )
{
if ( P_Left->start )
if ( P_Left->flags & Dropout )
{
P_Left->start = 0;
P_Left->flags &= ~Dropout;
#if 0
dropouts--; /* -- this is useful when debugging only */
#endif