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This commit is contained in:
Miloslav Číž 2018-11-18 10:28:20 +01:00
parent 3a9bc0f6e7
commit 1d52e3b516
1 changed files with 9 additions and 5 deletions
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14
s3l.h
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@ -145,11 +145,7 @@ void S3L_drawTriangle(int16_t x0, int16_t y0, int16_t x1, int16_t y1, int16_t x2
S3L_UNIT *barycentric0; // bar. coord that gets higher from L to R S3L_UNIT *barycentric0; // bar. coord that gets higher from L to R
S3L_UNIT *barycentric1; // bar. coord that gets higher from R to L S3L_UNIT *barycentric1; // bar. coord that gets higher from R to L
S3L_UNIT *barycentric2; // bar. coord that is computed from previous two S3L_UNIT *barycentric2; // bar. coord that gets higher from bottom up
barycentric0 = &p.barycentric0;
barycentric1 = &p.barycentric1;
barycentric2 = &p.barycentric2;
// Sort the points. // Sort the points.
@ -158,11 +154,15 @@ barycentric2 = &p.barycentric2;
{\ {\
lPointX = x##a; lPointY = y##a;\ lPointX = x##a; lPointY = y##a;\
rPointX = x##b; rPointY = y##b;\ rPointX = x##b; rPointY = y##b;\
barycentric0 = &p.barycentric##b;\
barycentric1 = &p.barycentric##a;\
}\ }\
else\ else\
{\ {\
lPointX = x##b; lPointY = y##b;\ lPointX = x##b; lPointY = y##b;\
rPointX = x##a; rPointY = y##a;\ rPointX = x##a; rPointY = y##a;\
barycentric0 = &p.barycentric##a;\
barycentric1 = &p.barycentric##b;\
} }
if (y0 <= y1) if (y0 <= y1)
@ -171,12 +171,14 @@ barycentric2 = &p.barycentric2;
{ {
tPointX = x0; tPointX = x0;
tPointY = y0; tPointY = y0;
barycentric2 = &p.barycentric0;
handleLR(1,2) handleLR(1,2)
} }
else else
{ {
tPointX = x2; tPointX = x2;
tPointY = y2; tPointY = y2;
barycentric2 = &p.barycentric2;
handleLR(0,1) handleLR(0,1)
} }
} }
@ -186,12 +188,14 @@ barycentric2 = &p.barycentric2;
{ {
tPointX = x1; tPointX = x1;
tPointY = y1; tPointY = y1;
barycentric2 = &p.barycentric1;
handleLR(0,2) handleLR(0,2)
} }
else else
{ {
tPointX = x2; tPointX = x2;
tPointY = y2; tPointY = y2;
barycentric2 = &p.barycentric2;
handleLR(0,1) handleLR(0,1)
} }
} }