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Fix compilation errors with C90 standard

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This commit is contained in:
wiredfool 2014-07-01 10:05:38 -07:00
parent e3f9fa0d78
commit a10b91786a
1 changed files with 29 additions and 19 deletions
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48
libImaging/Draw.c
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@ -421,19 +421,24 @@ static inline int
polygon_generic(Imaging im, int n, Edge *e, int ink, int eofill,
hline_handler hline)
{
Edge** edge_table;
float* xx;
int edge_count = 0;
int ymin = im->ysize - 1;
int ymax = 0;
int i;
if (n <= 0) {
return 0;
}
/* Initialize the edge table and find polygon boundaries */
Edge** edge_table = malloc(sizeof(Edge*) * n);
edge_table = malloc(sizeof(Edge*) * n);
if (!edge_table) {
return -1;
}
int edge_count = 0;
int ymin = im->ysize - 1;
int ymax = 0;
int i;
for (i = 0; i < n; i++) {
/* This causes that the pixels of horizontal edges are drawn twice :(
* but without it there are inconsistencies in ellipses */
@ -457,7 +462,7 @@ polygon_generic(Imaging im, int n, Edge *e, int ink, int eofill,
}
/* Process the edge table with a scan line searching for intersections */
float* xx = malloc(sizeof(float) * edge_count * 2);
xx = malloc(sizeof(float) * edge_count * 2);
if (!xx) {
free(edge_table);
return -1;
@ -591,6 +596,11 @@ ImagingDrawWideLine(Imaging im, int x0, int y0, int x1, int y1,
{
DRAW* draw;
INT32 ink;
int dx, dy;
double big_hypotenuse, small_hypotenuse, ratio_max, ratio_min;
int dxmin, dxmax, dymin, dymax;
Edge e[4];
int vertices[4][2];
DRAWINIT();
@ -599,35 +609,35 @@ ImagingDrawWideLine(Imaging im, int x0, int y0, int x1, int y1,
return 0;
}
int dx = x1-x0;
int dy = y1-y0;
dx = x1-x0;
dy = y1-y0;
if (dx == 0 && dy == 0) {
draw->point(im, x0, y0, ink);
return 0;
}
double big_hypotenuse = sqrt((double) (dx*dx + dy*dy));
double small_hypotenuse = (width - 1) / 2.0;
double ratio_max = ROUND_UP(small_hypotenuse) / big_hypotenuse;
double ratio_min = ROUND_DOWN(small_hypotenuse) / big_hypotenuse;
big_hypotenuse = sqrt((double) (dx*dx + dy*dy));
small_hypotenuse = (width - 1) / 2.0;
ratio_max = ROUND_UP(small_hypotenuse) / big_hypotenuse;
ratio_min = ROUND_DOWN(small_hypotenuse) / big_hypotenuse;
int dxmin = ROUND_DOWN(ratio_min * dy);
int dxmax = ROUND_DOWN(ratio_max * dy);
int dymin = ROUND_DOWN(ratio_min * dx);
int dymax = ROUND_DOWN(ratio_max * dx);
int vertices[4][2] = {
dxmin = ROUND_DOWN(ratio_min * dy);
dxmax = ROUND_DOWN(ratio_max * dy);
dymin = ROUND_DOWN(ratio_min * dx);
dymax = ROUND_DOWN(ratio_max * dx);
vertices = (int[][]) {
{x0 - dxmin, y0 + dymax},
{x1 - dxmin, y1 + dymax},
{x1 + dxmax, y1 - dymin},
{x0 + dxmax, y0 - dymin}
};
Edge e[4];
add_edge(e+0, vertices[0][0], vertices[0][1], vertices[1][0], vertices[1][1]);
add_edge(e+1, vertices[1][0], vertices[1][1], vertices[2][0], vertices[2][1]);
add_edge(e+2, vertices[2][0], vertices[2][1], vertices[3][0], vertices[3][1]);
add_edge(e+3, vertices[3][0], vertices[3][1], vertices[0][0], vertices[0][1]);
draw->polygon(im, 4, e, ink, 0);
return 0;