public void DrawConvexPath(GLConvexPath geo, GLBrush brush, float lineWidth = 1.0f)
{
GL.PushMatrix();
GL.Translate(0.5f, 0.5f, 0);
GL.Enable(EnableCap.LineSmooth);
GL.Color4(brush.Color0);
#if FAMISTUDIO_LINUX
if (!supportsLineWidth && lineWidth > 1)
{
var pts = new float[geo.Points.Length * 2 + 2];
for (int i = 0; i < geo.Points.Length; i++)
{
pts[i * 2 + 0] = geo.Points[i].X;
pts[i * 2 + 1] = geo.Points[i].Y;
}
pts[geo.Points.Length * 2 + 0] = geo.Points[0].X;
pts[geo.Points.Length * 2 + 1] = geo.Points[0].Y;
DrawThickLineAsPolygon(pts, brush, lineWidth);
}
else
#endif
{
GL.LineWidth(lineWidth);
GL.Begin(BeginMode.LineLoop);
foreach (var pt in geo.Points)
{
GL.Vertex2(pt.X, pt.Y);
}
GL.End();
}
GL.Disable(EnableCap.LineSmooth);
GL.PopMatrix();
}
public void FillConvexPath(GLConvexPath geo, GLBrush brush)
{
if (!brush.IsGradient)
{
GL.Color4(brush.Color0);
GL.Begin(BeginMode.TriangleFan);
foreach (var pt in geo.Points)
{
GL.Vertex2(pt.X + 0.5f, pt.Y + 0.5f);
}
GL.End();
}
else
{
Debug.Assert(brush.GradientSizeX == 0.0f);
GL.Begin(BeginMode.TriangleFan);
foreach (var pt in geo.Points)
{
float lerp = pt.Y / (float)brush.GradientSizeY;
byte r = (byte)(brush.Color0.R * (1.0f - lerp) + (brush.Color1.R * lerp));
byte g = (byte)(brush.Color0.G * (1.0f - lerp) + (brush.Color1.G * lerp));
byte b = (byte)(brush.Color0.B * (1.0f - lerp) + (brush.Color1.B * lerp));
byte a = (byte)(brush.Color0.A * (1.0f - lerp) + (brush.Color1.A * lerp));
GL.Color4(r, g, b, a);
GL.Vertex2(pt.X + 0.5f, pt.Y + 0.5f);
}
GL.End();
}
}
public void FillConvexPath(GLConvexPath geo, GLBrush brush, bool smooth = false)
{
if (!brush.IsGradient)
{
if (smooth)
GL.Enable(EnableCap.PolygonSmooth);
GL.Color4(brush.Color0);
GL.Begin(BeginMode.TriangleFan);
foreach (var pt in geo.Points)
GL.Vertex2(pt.X, pt.Y);
GL.End();
if (smooth)
GL.Disable(EnableCap.PolygonSmooth);
}
else
{
Debug.Assert(brush.GradientSizeX == 0.0f);
GL.Begin(BeginMode.TriangleFan);
foreach (var pt in geo.Points)
{
float lerp = pt.Y / (float)brush.GradientSizeY;
byte r = (byte)(brush.Color0.R * (1.0f - lerp) + (brush.Color1.R * lerp));
byte g = (byte)(brush.Color0.G * (1.0f - lerp) + (brush.Color1.G * lerp));
byte b = (byte)(brush.Color0.B * (1.0f - lerp) + (brush.Color1.B * lerp));
byte a = (byte)(brush.Color0.A * (1.0f - lerp) + (brush.Color1.A * lerp));
GL.Color4(r, g, b, a);
GL.Vertex2(pt.X, pt.Y);
}
GL.End();
}
}
public void DrawConvexPath(GLConvexPath geo, GLBrush brush)
{
GL.Enable(EnableCap.LineSmooth);
GL.Color4(brush.Color0);
GL.Begin(BeginMode.LineLoop);
foreach (var pt in geo.Points)
{
GL.Vertex2(pt.X + 0.5f, pt.Y + 0.5f);
}
GL.End();
GL.Disable(EnableCap.LineSmooth);
}
public void FillAndDrawConvexPath(GLConvexPath geo, GLBrush fillBrush, GLBrush lineBrush, float lineWidth = 1.0f)
{
FillConvexPath(geo, fillBrush);
DrawConvexPath(geo, lineBrush, lineWidth);
}