diff --git a/DungeonShooting_Godot/src/test/TestOptimizeSprite.cs b/DungeonShooting_Godot/src/test/TestOptimizeSprite.cs
index 075a6ad..ea1ca3e 100644
--- a/DungeonShooting_Godot/src/test/TestOptimizeSprite.cs
+++ b/DungeonShooting_Godot/src/test/TestOptimizeSprite.cs
@@ -2,104 +2,38 @@
public partial class TestOptimizeSprite : Node2D
{
- [Export()]
- public Texture2D Texture2D;
+ [Export()] public Texture2D Texture2D;
public override void _Ready()
{
- var image = Image.Create(150, 150, true, Image.Format.Rgba8);
+ var canvas = Image.Create(150, 150, true, Image.Format.Rgba8);
for (int x = 0; x < 150; x++)
{
for (int y = 0; y < 150; y++)
{
- image.SetPixel(x, y, Colors.Gray);
+ canvas.SetPixel(x, y, Colors.Gray);
}
}
- var imgData = Texture2D.GetImage();
- var width = imgData.GetWidth();
- var height = imgData.GetHeight();
-
- // image.SetPixel(50, 50, Colors.Red);
- // image.SetPixel(50 + width, 50 + height, Colors.Red);
- // image.SetPixel(50, 50 + height, Colors.Red);
- // image.SetPixel(50 + width, 50, Colors.Red);
-
-
- // image.SetPixel(50, 100, Colors.Green);
- // image.SetPixel(50 + (int)w1, 100 + (int)h1, Colors.Green);
- // image.SetPixel(50, 100 + (int)h1, Colors.Green);
- // image.SetPixel(50 + (int)w1, 100, Colors.Green);
-
- // var centerX = 0.5f;
- // var centerY = 0.5f;
-
- var angle = Mathf.DegToRad(44);
- var newWidth = width * Mathf.Abs(Mathf.Cos(angle)) + height * Mathf.Sin(angle);
- var newHeight = width * Mathf.Sin(angle) + height * Mathf.Abs(Mathf.Cos(angle));
-
- var ox = width * 1;
- var oy = height * 0.5;
-
-
- var offsetX =
- (ox / Mathf.Sin(angle) +
- (0.5 * newWidth * Mathf.Sin(angle) - 0.5 * newHeight * Mathf.Cos(angle) + 0.5 * height) /
- Mathf.Cos(angle) -
- (-0.5 * newWidth * Mathf.Cos(angle) - 0.5 * newHeight * Mathf.Sin(angle) + 0.5 * width) /
- Mathf.Sin(angle) - oy / Mathf.Cos(angle)) /
- (Mathf.Cos(angle) / Mathf.Sin(angle) + Mathf.Sin(angle) / Mathf.Cos(angle));
-
- var offsetY =
- (ox / Mathf.Cos(angle) -
- (-0.5 * newWidth * Mathf.Cos(angle) - 0.5 * newHeight * Mathf.Sin(angle) + 0.5 * width) /
- Mathf.Cos(angle) -
- (0.5 * newWidth * Mathf.Sin(angle) - 0.5 * newHeight * Mathf.Cos(angle) + 0.5 * height) /
- Mathf.Sin(angle) + oy / Mathf.Sin(angle)) /
- (Mathf.Sin(angle) / Mathf.Cos(angle) + Mathf.Cos(angle) / Mathf.Sin(angle));
-
-
- for (int x2 = 0; x2 < newWidth; x2++)
- {
- for (int y2 = 0; y2 < newHeight; y2++)
- {
- //如果(x1,y1)不在原图宽高所表示范围内，则（x2,y2）处的像素值设置为0或255
- var x1 = x2 * Mathf.Cos(angle) + y2 * Mathf.Sin(angle) - 0.5 * newWidth * Mathf.Cos(angle) -
- 0.5 * newHeight * Mathf.Sin(angle) + 0.5 * width;
- var y1 = -x2 * Mathf.Sin(angle) + y2 * Mathf.Cos(angle) + 0.5 * newWidth * Mathf.Sin(angle) -
- 0.5 * newHeight * Mathf.Cos(angle) + 0.5 * height;
-
- var x = x2 + 50 - (int)offsetX;
- var y = y2 + 50 - (int)offsetY;
-
- if (x1 < 0 || x1 >= width || y1 < 0 || y1 >= height)
- {
- //image.SetPixel(x, y, new Color(0, 0, 0, 0));
- //在图片外
- continue;
- }
-
- //如果(x1,y1)在原图宽高所表示范围内，使用最近邻插值或双线性插值，求出（x2,y2）处的像素值
- image.SetPixel(x, y, imgData.GetPixel(Mathf.FloorToInt(x1), Mathf.FloorToInt(y1)));
- }
- }
+ var image = Texture2D.GetImage();
+ RotateImage(image, canvas, 50, 50, 120, image.GetWidth(), image.GetHeight());
//RotateImage(imgData, image, 0);
- for (int i = 0; i < image.GetWidth(); i++)
+ for (int i = 0; i < canvas.GetWidth(); i++)
{
- image.SetPixel(i, 50, Colors.Black);
- image.SetPixel(i, 50 + imgData.GetHeight() / 2, Colors.Green);
+ canvas.SetPixel(i, 50, Colors.Black);
+ canvas.SetPixel(i, 50 + image.GetHeight() / 2, Colors.Green);
}
- for (int i = 0; i < image.GetHeight(); i++)
+ for (int i = 0; i < canvas.GetHeight(); i++)
{
- image.SetPixel(50, i, Colors.Black);
- image.SetPixel(50 + imgData.GetWidth() / 2, i, Colors.Green);
+ canvas.SetPixel(50, i, Colors.Black);
+ canvas.SetPixel(50 + image.GetWidth() / 2, i, Colors.Green);
}
-
- var imageTexture = ImageTexture.CreateFromImage(image);
+
+ var imageTexture = ImageTexture.CreateFromImage(canvas);
var sprite2D = new Sprite2D();
sprite2D.Texture = imageTexture;
sprite2D.Position = new Vector2(900, 500);
@@ -107,8 +41,57 @@
AddChild(sprite2D);
}
- public void RotateImage(Image origin, Image canvas, float angle)
+ public void RotateImage(Image origin, Image canvas, int x, int y, float angle, int centerX, int centerY)
{
-
+ angle = Mathf.DegToRad(angle);
+ var width = origin.GetWidth();
+ var height = origin.GetHeight();
+
+ var cosAngle = Mathf.Cos(angle);
+ var sinAngle = Mathf.Sin(angle);
+
+ var newWidth = width * Mathf.Abs(cosAngle) + height * sinAngle;
+ var newHeight = width * sinAngle + height * Mathf.Abs(cosAngle);
+
+ var num1 = -0.5 * newWidth * cosAngle - 0.5 * newHeight * sinAngle + 0.5 * width;
+ var num2 = 0.5 * newWidth * sinAngle - 0.5 * newHeight * cosAngle + 0.5 * height;
+
+ var offsetX =
+ (int)((centerX / sinAngle +
+ (0.5 * newWidth * sinAngle - 0.5 * newHeight * cosAngle + 0.5 * height) /
+ cosAngle -
+ (-0.5 * newWidth * cosAngle - 0.5 * newHeight * sinAngle + 0.5 * width) /
+ sinAngle - centerY / cosAngle) /
+ (cosAngle / sinAngle + sinAngle / cosAngle));
+
+ var offsetY =
+ (int)((centerX / cosAngle -
+ (-0.5 * newWidth * cosAngle - 0.5 * newHeight * sinAngle + 0.5 * width) /
+ cosAngle -
+ (0.5 * newWidth * sinAngle - 0.5 * newHeight * cosAngle + 0.5 * height) /
+ sinAngle + centerY / sinAngle) /
+ (sinAngle / cosAngle + cosAngle / sinAngle));
+
+
+ for (int x2 = 0; x2 < newWidth; x2++)
+ {
+ for (int y2 = 0; y2 < newHeight; y2++)
+ {
+ //如果(x1,y1)不在原图宽高所表示范围内，则（x2,y2）处的像素值设置为0或255
+ var x1 = x2 * cosAngle + y2 * sinAngle + num1;
+ var y1 = -x2 * sinAngle + y2 * cosAngle + num2;
+
+ if (x1 < 0 || x1 >= width || y1 < 0 || y1 >= height)
+ {
+ //image.SetPixel(x, y, new Color(0, 0, 0, 0));
+ //在图片外
+ continue;
+ }
+
+ //如果(x1,y1)在原图宽高所表示范围内，使用最近邻插值或双线性插值，求出（x2,y2）处的像素值
+ canvas.SetPixel(x2 + x - offsetX, y2 + y - offsetY,
+ origin.GetPixel(Mathf.FloorToInt(x1), Mathf.FloorToInt(y1)));
+ }
+ }
}
}