61 lines
1.2 KiB
JavaScript
Vendored
61 lines
1.2 KiB
JavaScript
Vendored
|
|
class PixelTimeRange
|
|
{
|
|
constructor(start_us, span_us, span_px)
|
|
{
|
|
this.Span_px = span_px;
|
|
this.Set(start_us, span_us);
|
|
}
|
|
|
|
Set(start_us, span_us)
|
|
{
|
|
this.Start_us = start_us;
|
|
this.Span_us = span_us;
|
|
this.End_us = this.Start_us + span_us;
|
|
this.usPerPixel = this.Span_px / this.Span_us;
|
|
}
|
|
|
|
SetStart(start_us)
|
|
{
|
|
this.Start_us = start_us;
|
|
this.End_us = start_us + this.Span_us;
|
|
}
|
|
|
|
SetEnd(end_us)
|
|
{
|
|
this.End_us = end_us;
|
|
this.Start_us = end_us - this.Span_us;
|
|
}
|
|
|
|
SetPixelSpan(span_px)
|
|
{
|
|
this.Span_px = span_px;
|
|
this.usPerPixel = this.Span_px / this.Span_us;
|
|
}
|
|
|
|
PixelOffset(time_us)
|
|
{
|
|
return Math.floor((time_us - this.Start_us) * this.usPerPixel);
|
|
}
|
|
|
|
PixelSize(time_us)
|
|
{
|
|
return Math.floor(time_us * this.usPerPixel);
|
|
}
|
|
|
|
TimeAtPosition(position)
|
|
{
|
|
return this.Start_us + position / this.usPerPixel;
|
|
}
|
|
|
|
Clone()
|
|
{
|
|
return new PixelTimeRange(this.Start_us, this.Span_us, this.Span_px);
|
|
}
|
|
|
|
SetAsUniform(gl, program)
|
|
{
|
|
glSetUniform(gl, program, "inTimeRange.msStart", this.Start_us / 1000.0);
|
|
glSetUniform(gl, program, "inTimeRange.msPerPixel", this.usPerPixel * 1000.0);
|
|
}
|
|
}
|