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Faster map sprite generation

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Create the bitmap via bytes (as int[]) then create the final image, rather than SetPixel
This commit is contained in:
Kurt
2020-04-08 12:24:25 -07:00
parent 5491ab3ac5
commit 29b03cc428
1 changed files with 86 additions and 13 deletions
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99
NHSE.Sprites/Field/FieldItemSpriteDrawer.cs
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@@ -1,4 +1,6 @@
using System.Drawing;
using System.Drawing.Imaging;
using System.Runtime.InteropServices;
using NHSE.Core;
namespace NHSE.Sprites
@@ -16,29 +18,100 @@ public Bitmap GetBitmapLayer(FieldItemLayer layer)
var height = layer.MapHeight;
var width = items.Length / height;
const int w = 1;
const int h = 1;
var png = new Bitmap(width * w, height * h);
for (int i = 0; i < items.Length; i++)
var bmpData = new int[width * height];
for (int x = 0; x < width; x++)
{
var x = h * (i / height);
var y = w * (i % height);
var color = FieldItemSprite.GetItemColor(items[i]);
png.SetPixel(x, y, color);
var ix = x * height;
for (int y = 0; y < height; y++)
{
var index = ix + y;
var tile = items[index];
bmpData[(y * width) + x] = FieldItemSprite.GetItemColor(tile).ToArgb();
}
}
return png;
var result = new Bitmap(width, height, PixelFormat.Format32bppArgb);
var bData = result.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb);
Marshal.Copy(bmpData, 0, bData.Scan0, bmpData.Length);
result.UnlockBits(bData);
return result;
}
public Bitmap GetBitmapLayer(FieldItemLayer layer, int x, int y)
public Bitmap GetBitmapLayerAcre(FieldItemLayer layer, int x0, int y0)
{
var items = layer.Tiles;
var height = layer.MapHeight;
var width = items.Length / height;
var bmpData = new int[width * height];
var stride = layer.GridWidth;
for (int x = 0; x < stride; x++)
{
for (int y = 0; y < stride; y++)
{
var tile = layer.GetTile(x + x0, y + y0);
var color = FieldItemSprite.GetItemColor(tile).ToArgb();
var i = (y * width) + x;
bmpData[i] = color;
}
}
var result = new Bitmap(width, height, PixelFormat.Format32bppArgb);
var bData = result.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb);
Marshal.Copy(bmpData, 0, bData.Scan0, bmpData.Length);
result.UnlockBits(bData);
return result;
}
public Bitmap GetBitmapLayerAcre(FieldItemLayer layer, int x0, int y0, int scale)
{
var map = GetBitmapLayerAcre(layer, x0, y0);
map = ImageUtil.ResizeImage(map, map.Width * scale, map.Height * scale);
// Obtain raw data
var bData = map.LockBits(new Rectangle(0, 0, map.Width, map.Height), ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb);
var ptr = bData.Scan0;
var data = new int[map.Width * map.Height];
Marshal.Copy(ptr, data, 0, data.Length);
// draw symbols over special items now?
// Slap on a grid
var w = map.Width;
var h = map.Height;
const int grid = -0x1000000; // 0xFF000000u
for (int x = scale; x < w; x += scale)
{
for (int y = scale; y < h; y += scale)
{
var index = (y * w) + x;
data[index] = grid;
}
}
// Return final data
Marshal.Copy(data, 0, ptr, data.Length);
map.UnlockBits(bData);
return map;
}
public Bitmap GetBitmapLayer(FieldItemLayer layer, int x, int y, int scale = 1)
{
var map = GetBitmapLayer(layer);
if (scale > 1)
map = ImageUtil.ResizeImage(map, map.Width, map.Height);
return DrawViewReticle(map, layer, x, y, scale);
}
private static Bitmap DrawViewReticle(Bitmap map, MapGrid g, int x, int y, int scale)
{
using var gfx = Graphics.FromImage(map);
using var pen = new Pen(Color.Red);
const int scale = 1;
int w = layer.GridWidth * scale;
int h = layer.GridHeight * scale;
int w = g.GridWidth * scale;
int h = g.GridHeight * scale;
gfx.DrawRectangle(pen, x * scale, y * scale, w, h);
return map;
}