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OSGD面渲染+窗口逻辑增强

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Leonmmcoset
2026-04-04 13:38:51 +08:00
parent 636f3f146d
commit 2f9df41666
7 changed files with 203 additions and 10 deletions
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53
OSGraphicDraw/Renderer3D.cs
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@@ -34,5 +34,58 @@ namespace CMLeonOS.OSGraphicDraw
target.DrawLine(ax, ay, bx, by, color);
}
private static void DrawScanline(Window target, int x1, int x2, int y, Color color)
{
if (y < 0 || y >= target.Height) return;
if (x1 > x2)
{
int t = x1;
x1 = x2;
x2 = t;
}
if (x2 < 0 || x1 >= target.Width) return;
if (x1 < 0) x1 = 0;
if (x2 >= target.Width) x2 = target.Width - 1;
target.DrawHorizontalLine((x2 - x1) + 1, x1, y, color);
}
private static void DrawTriangle2D(Window target, int x1, int y1, int x2, int y2, int x3, int y3, Color color)
{
if (y1 > y2) { int tx = x1; int ty = y1; x1 = x2; y1 = y2; x2 = tx; y2 = ty; }
if (y1 > y3) { int tx = x1; int ty = y1; x1 = x3; y1 = y3; x3 = tx; y3 = ty; }
if (y2 > y3) { int tx = x2; int ty = y2; x2 = x3; y2 = y3; x3 = tx; y3 = ty; }
if (y1 == y3) return;
for (int y = y1; y <= y3; y++)
{
bool lowerHalf = y > y2 || y2 == y1;
int segmentHeight = lowerHalf ? (y3 - y2) : (y2 - y1);
if (segmentHeight == 0) continue;
double alpha = (double)(y - y1) / (y3 - y1);
double beta = lowerHalf
? (double)(y - y2) / segmentHeight
: (double)(y - y1) / segmentHeight;
int ax = x1 + (int)((x3 - x1) * alpha);
int bx = lowerHalf
? x2 + (int)((x3 - x2) * beta)
: x1 + (int)((x2 - x1) * beta);
DrawScanline(target, ax, bx, y, color);
}
}
internal static void DrawTriangle3D(Window target, Vec3 a, Vec3 b, Vec3 c, Color color, double fovScale, double cameraDistance)
{
if (!Project(a, target.Width, target.Height, fovScale, cameraDistance, out int ax, out int ay)) return;
if (!Project(b, target.Width, target.Height, fovScale, cameraDistance, out int bx, out int by)) return;
if (!Project(c, target.Width, target.Height, fovScale, cameraDistance, out int cx, out int cy)) return;
DrawTriangle2D(target, ax, ay, bx, by, cx, cy, color);
}
}
}