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git-svn-id: svn://svn.ijw.co.nz/svn/OpenRa@1221 993157c7-ee19-0410-b2c4-bb4e9862e678

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This commit is contained in:
chrisf
2007-07-14 06:27:30 +00:00
parent 36491edc12
commit 6e0bf41569
5 changed files with 59 additions and 46 deletions
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58
OpenRa.Game/Util.cs
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@@ -9,22 +9,6 @@ namespace OpenRa.Game
{
static class Util
{
public static float U(Sprite s, float u)
{
float u0 = (float)(s.origin.X + 0.5f) / (float)s.sheet.bitmap.Width;
float u1 = (float)(s.origin.X + s.size.Width) / (float)s.sheet.bitmap.Width;
return (u > 0) ? u1 : u0;
}
public static float V(Sprite s, float v)
{
float v0 = (float)(s.origin.Y + 0.5f) / (float)s.sheet.bitmap.Height;
float v1 = (float)(s.origin.Y + s.size.Height) / (float)s.sheet.bitmap.Height;
return (v > 0) ? v1 : v0;
}
public static float Constrain(float x, Range<float> range)
{
return x < range.Start ? range.Start : x > range.End ? range.End : x;
@@ -48,15 +32,14 @@ namespace OpenRa.Game
return new PointF(paletteLine / 16.0f, channelEncoder(channel));
}
public static Vertex MakeVertex(PointF o, float u, float v, Sprite r, int palette)
public static Vertex MakeVertex(PointF o, PointF uv, Sprite r, int palette)
{
float x2 = o.X + r.size.Width;
float y2 = o.Y + r.size.Height;
PointF farCorner = new PointF(o.X + r.bounds.Width, o.Y + r.bounds.Height);
PointF p = EncodeVertexAttributes(r.channel, palette);
return new Vertex(Lerp(o.X, x2, u), Lerp(o.Y, y2, v), 0, U(r, u), V(r, v),
p.X, p.Y);
return new Vertex(
Lerp( o, farCorner, uv ),
r.MapTextureCoords(uv),
EncodeVertexAttributes(r.channel, palette));
}
static float Lerp(float a, float b, float t)
@@ -64,14 +47,27 @@ namespace OpenRa.Game
return (1 - t) * a + t * b;
}
static PointF Lerp(PointF a, PointF b, PointF t)
{
return new PointF(
Lerp(a.X, b.X, t.X),
Lerp(a.Y, b.Y, t.Y));
}
static PointF[] uv =
{
new PointF( 0,0 ),
new PointF( 1,0 ),
new PointF( 0,1 ),
new PointF( 1,1 ),
};
public static void CreateQuad(List<Vertex> vertices, List<ushort> indices, PointF o, Sprite r, int palette)
{
ushort offset = (ushort)vertices.Count;
vertices.Add(Util.MakeVertex(o, 0, 0, r, palette));
vertices.Add(Util.MakeVertex(o, 1, 0, r, palette));
vertices.Add(Util.MakeVertex(o, 0, 1, r, palette));
vertices.Add(Util.MakeVertex(o, 1, 1, r, palette));
foreach( PointF p in uv )
vertices.Add(Util.MakeVertex(o, p, r, palette));
indices.Add(offset);
indices.Add((ushort)(offset + 1));
@@ -84,11 +80,11 @@ namespace OpenRa.Game
public static void CopyIntoChannel(Sprite dest, byte[] src)
{
for (int i = 0; i < dest.size.Width; i++)
for (int j = 0; j < dest.size.Height; j++)
for (int i = 0; i < dest.bounds.Width; i++)
for (int j = 0; j < dest.bounds.Height; j++)
{
Point p = new Point(dest.origin.X + i, dest.origin.Y + j);
byte b = src[i + dest.size.Width * j];
Point p = new Point(dest.bounds.Left + i, dest.bounds.Top + j);
byte b = src[i + dest.bounds.Width * j];
Color original = dest.sheet.bitmap.GetPixel(p.X, p.Y);
dest.sheet.bitmap.SetPixel(p.X, p.Y, ReplaceChannel(original, dest.channel, b));
}