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Heavy-handedly fix clipping errors at the edges of z0 and z1 tiles

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This commit is contained in:
Eric Fischer
2014-10-15 17:03:30 -07:00
parent 8fec4ef9fc
commit 3bdcc3ca90
2 changed files with 31 additions and 8 deletions
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tile.cc
+6 -6
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@@ -373,8 +373,8 @@ void douglas_peucker(drawvec &geom, int start, int n, double e) {
}
}
static bool inside(draw d, int edge, int area) {
int clip_buffer = area / 64;
static bool inside(draw d, int edge, long long area) {
long long clip_buffer = area / 64;
switch (edge) {
case 0: // top
@@ -408,8 +408,8 @@ static draw get_line_intersection(draw p0, draw p1, draw p2, draw p3) {
return draw(VT_LINETO, p0.x + (t * s1_x), p0.y + (t * s1_y));
}
static draw intersect(draw a, draw b, int edge, int area) {
int clip_buffer = area / 64;
static draw intersect(draw a, draw b, int edge, long long area) {
long long clip_buffer = area / 64;
switch (edge) {
case 0: // top
@@ -437,9 +437,9 @@ static draw intersect(draw a, draw b, int edge, int area) {
static drawvec clip_poly1(drawvec &geom, int z, int detail) {
drawvec out = geom;
unsigned area = 0xFFFFFFFF;
long long area = 0xFFFFFFFF;
if (z != 0) {
area = 1 << (32 - z);
area = 1LL << (32 - z);
}
for (int edge = 0; edge < 4; edge++) {