static SpriteContext()
{
XScalingInterpolator = new Interpolator();
XScalingInterpolator.SetNumberOfInterpolationPoints(1);
YScalingInterpolator = new Interpolator();
YScalingInterpolator.SetNumberOfInterpolationPoints(1);
}
static Triangle()
{
FlatInterpolator = new Interpolator();
FlatInterpolator.SetNumberOfInterpolationPoints(4);
GouraudInterpolator = new Interpolator();
GouraudInterpolator.SetNumberOfInterpolationPoints(12);
TextureInterpolator = new Interpolator();
TextureInterpolator.SetNumberOfInterpolationPoints(8);
}
static Triangle()
{
FlatInterpolator = new Interpolator();
FlatInterpolator.SetNumberOfInterpolationPoints(4);
GouraudInterpolator = new Interpolator();
GouraudInterpolator.SetNumberOfInterpolationPoints(12);
TextureInterpolator = new Interpolator();
TextureInterpolator.SetNumberOfInterpolationPoints(8);
}
static SimpleSpanRenderer()
{
DepthInterpolator = new Interpolator();
DepthInterpolator.SetNumberOfInterpolationPoints(1);
DepthInterpolator.InitializePoints(DefaultSpanLength);
GouraudInterpolator = new Interpolator();
GouraudInterpolator.SetNumberOfInterpolationPoints(5);
GouraudInterpolator.InitializePoints(DefaultSpanLength);
TextureInterpolator = new Interpolator();
TextureInterpolator.SetNumberOfInterpolationPoints(3);
TextureInterpolator.InitializePoints(DefaultSpanLength);
}
static SimpleSpanRenderer()
{
DepthInterpolator = new Interpolator();
DepthInterpolator.SetNumberOfInterpolationPoints(1);
DepthInterpolator.InitializePoints(DefaultSpanLength);
GouraudInterpolator = new Interpolator();
GouraudInterpolator.SetNumberOfInterpolationPoints(5);
GouraudInterpolator.InitializePoints(DefaultSpanLength);
TextureInterpolator = new Interpolator();
TextureInterpolator.SetNumberOfInterpolationPoints(3);
TextureInterpolator.InitializePoints(DefaultSpanLength);
}
private static Span?GetSpan(int interpolationIndex, Interpolator interpolator, Vertex vertexA, bool useTexture)
{
var y = ((int)vertexA.TranslatedScreenCoordinates.Y) + interpolationIndex;
var xstart = interpolator.Points[0].InterpolatedValues[interpolationIndex];
var xend = interpolator.Points[1].InterpolatedValues[interpolationIndex];
var ustart = 0f;
var vstart = 0f;
var uend = 0f;
var vend = 0f;
if (useTexture)
{
ustart = interpolator.Points[4].InterpolatedValues[interpolationIndex];
uend = interpolator.Points[5].InterpolatedValues[interpolationIndex];
vstart = interpolator.Points[6].InterpolatedValues[interpolationIndex];
vend = interpolator.Points[7].InterpolatedValues[interpolationIndex];
}
var swap = false;
if (xstart > xend)
{
var temp = xstart;
xstart = xend;
xend = temp;
swap = true;
temp = ustart;
ustart = uend;
uend = temp;
temp = vstart;
vstart = vend;
vend = temp;
}
xend += 0.5f;
var length = xend - xstart;
var absLength = (int)System.Math.Round((double)length + 0.5);
if (absLength >= 1)
{
var span = new Span
{
Y = y,
XStart = (int)xstart,
XEnd = (int)xend,
UStart = ustart,
UEnd = uend,
VStart = vstart,
VEnd = vend,
Length = absLength,
Swap = swap
};
return(span);
}
return(null);
}
private static Span? GetSpan(int interpolationIndex, Interpolator interpolator, Vertex vertexA, bool useTexture)
{
var y = ((int)vertexA.TranslatedScreenCoordinates.Y) + interpolationIndex;
var xstart = interpolator.Points[0].InterpolatedValues[interpolationIndex];
var xend = interpolator.Points[1].InterpolatedValues[interpolationIndex];
var ustart = 0f;
var vstart = 0f;
var uend = 0f;
var vend = 0f;
if (useTexture)
{
ustart = interpolator.Points[4].InterpolatedValues[interpolationIndex];
uend = interpolator.Points[5].InterpolatedValues[interpolationIndex];
vstart = interpolator.Points[6].InterpolatedValues[interpolationIndex];
vend = interpolator.Points[7].InterpolatedValues[interpolationIndex];
}
var swap = false;
if (xstart > xend)
{
var temp = xstart;
xstart = xend;
xend = temp;
swap = true;
temp = ustart;
ustart = uend;
uend = temp;
temp = vstart;
vstart = vend;
vend = temp;
}
xend += 0.5f;
var length = xend - xstart;
var absLength = (int)System.Math.Round((double)length + 0.5);
if (absLength >= 1)
{
var span = new Span
{
Y = y,
XStart = (int)xstart,
XEnd = (int)xend,
UStart = ustart,
UEnd = uend,
VStart = vstart,
VEnd = vend,
Length = absLength,
Swap = swap
};
return span;
}
return null;
}
