updateUVs method
void
updateUVs()
Implementation
void updateUVs() {
double u = 0.0, v = 0.0, width = 0.0, height = 0.0;
if (region == null) {
u = v = 0.0;
width = height = 1.0;
} else {
u = region!.u;
v = region!.v;
width = region!.u2 - u;
height = region!.v2 - v;
}
final Float32List? regionUVs = this.regionUVs;
if (this.uvs == null || this.uvs!.length != regionUVs!.length) {
this.uvs = Float32List(regionUVs!.length);
}
final Float32List? uvs = this.uvs;
if (region!.rotate) {
final int n = uvs!.length;
for (int i = 0; i < n; i += 2) {
uvs[i] = u + regionUVs[i + 1] * width;
uvs[i + 1] = v + height - regionUVs[i] * height;
}
} else {
final int n = uvs!.length;
for (int i = 0; i < n; i += 2) {
uvs[i] = u + regionUVs[i] * width;
uvs[i + 1] = v + regionUVs[i + 1] * height;
}
}
}