暂存服务端渲染功能，材质渲染计划迁移至前端

internal/service/skin_renderer/renderer_test.go

@@ -0,0 +1,203 @@
+package skin_renderer
+
+import (
+	"image"
+	"image/color"
+	"image/png"
+	"os"
+	"testing"
+)
+
+// createTestSkin 创建一个测试用的 64x64 皮肤图像
+func createTestSkin() []byte {
+	img := image.NewRGBA(image.Rect(0, 0, 64, 64))
+
+	// 填充一些测试颜色
+	// 头部区域 (8,8) - (16,16)
+	for y := 8; y < 16; y++ {
+		for x := 8; x < 16; x++ {
+			img.Set(x, y, image.White)
+		}
+	}
+
+	// 躯干区域 (20,20) - (28,32)
+	for y := 20; y < 32; y++ {
+		for x := 20; x < 28; x++ {
+			img.Set(x, y, image.Black)
+		}
+	}
+
+	// 编码为 PNG
+	f, _ := os.CreateTemp("", "test_skin_*.png")
+	defer os.Remove(f.Name())
+	defer f.Close()
+
+	png.Encode(f, img)
+	f.Seek(0, 0)
+
+	data, _ := os.ReadFile(f.Name())
+	return data
+}
+
+func TestSkinRenderer_Render(t *testing.T) {
+	skinData := createTestSkin()
+	if len(skinData) == 0 {
+		t.Skip("无法创建测试皮肤")
+	}
+
+	renderer := NewSkinRenderer(7.0, false, -45, -25)
+	result, err := renderer.Render(skinData, false)
+	if err != nil {
+		t.Fatalf("渲染失败: %v", err)
+	}
+
+	if result == nil {
+		t.Fatal("渲染结果为空")
+	}
+
+	bounds := result.Bounds()
+	if bounds.Dx() == 0 || bounds.Dy() == 0 {
+		t.Error("渲染结果尺寸为零")
+	}
+
+	t.Logf("渲染结果尺寸: %dx%d", bounds.Dx(), bounds.Dy())
+}
+
+func TestSkinRenderer_RenderHeadOnly(t *testing.T) {
+	skinData := createTestSkin()
+	if len(skinData) == 0 {
+		t.Skip("无法创建测试皮肤")
+	}
+
+	renderer := NewSkinRenderer(15.0, true, 45, -25)
+	result, err := renderer.Render(skinData, false)
+	if err != nil {
+		t.Fatalf("渲染头像失败: %v", err)
+	}
+
+	if result == nil {
+		t.Fatal("渲染结果为空")
+	}
+
+	bounds := result.Bounds()
+	t.Logf("头像渲染结果尺寸: %dx%d", bounds.Dx(), bounds.Dy())
+}
+
+func TestMinecraft_RenderSkin(t *testing.T) {
+	skinData := createTestSkin()
+	if len(skinData) == 0 {
+		t.Skip("无法创建测试皮肤")
+	}
+
+	mc := NewMinecraft()
+	result, err := mc.RenderSkin(skinData, 7.0, false)
+	if err != nil {
+		t.Fatalf("RenderSkin 失败: %v", err)
+	}
+
+	if result == nil {
+		t.Fatal("渲染结果为空")
+	}
+
+	bounds := result.Bounds()
+	t.Logf("完整皮肤渲染结果尺寸: %dx%d", bounds.Dx(), bounds.Dy())
+}
+
+func TestMinecraft_Render2DAvatar(t *testing.T) {
+	skinData := createTestSkin()
+	if len(skinData) == 0 {
+		t.Skip("无法创建测试皮肤")
+	}
+
+	mc := NewMinecraft()
+	result, err := mc.Render2DAvatar(skinData, 15.0)
+	if err != nil {
+		t.Fatalf("Render2DAvatar 失败: %v", err)
+	}
+
+	if result == nil {
+		t.Fatal("渲染结果为空")
+	}
+
+	bounds := result.Bounds()
+	t.Logf("2D头像渲染结果尺寸: %dx%d", bounds.Dx(), bounds.Dy())
+}
+
+func TestMinecraft_Render3DAvatar(t *testing.T) {
+	skinData := createTestSkin()
+	if len(skinData) == 0 {
+		t.Skip("无法创建测试皮肤")
+	}
+
+	mc := NewMinecraft()
+	result, err := mc.Render3DAvatar(skinData, 15.0)
+	if err != nil {
+		t.Fatalf("Render3DAvatar 失败: %v", err)
+	}
+
+	if result == nil {
+		t.Fatal("渲染结果为空")
+	}
+
+	bounds := result.Bounds()
+	t.Logf("3D头像渲染结果尺寸: %dx%d", bounds.Dx(), bounds.Dy())
+}
+
+func TestPoint_Project(t *testing.T) {
+	p := NewPoint(1, 2, 3)
+
+	var minX, maxX, minY, maxY float64
+
+	// 测试 45 度旋转
+	cosAlpha := 0.9063077870366499   // cos(-25°)
+	sinAlpha := -0.42261826174069944 // sin(-25°)
+	cosOmega := 0.7071067811865476   // cos(45°)
+	sinOmega := 0.7071067811865476   // sin(45°)
+
+	p.Project(cosAlpha, sinAlpha, cosOmega, sinOmega, &minX, &maxX, &minY, &maxY)
+
+	x, y, z := p.GetDestCoord()
+	t.Logf("投影结果: x=%.2f, y=%.2f, z=%.2f", x, y, z)
+
+	if !p.IsProjected() {
+		t.Error("点应该标记为已投影")
+	}
+}
+
+func TestPolygon_AddToImage(t *testing.T) {
+	// 创建一个简单的正方形多边形
+	p1 := NewPoint(0, 0, 0)
+	p2 := NewPoint(10, 0, 0)
+	p3 := NewPoint(10, 10, 0)
+	p4 := NewPoint(0, 10, 0)
+
+	var minX, maxX, minY, maxY float64
+	p1.Project(1, 0, 1, 0, &minX, &maxX, &minY, &maxY)
+	p2.Project(1, 0, 1, 0, &minX, &maxX, &minY, &maxY)
+	p3.Project(1, 0, 1, 0, &minX, &maxX, &minY, &maxY)
+	p4.Project(1, 0, 1, 0, &minX, &maxX, &minY, &maxY)
+
+	poly := NewPolygon([4]*Point{p1, p2, p3, p4}, color.RGBA{R: 255, G: 255, B: 255, A: 255})
+
+	img := image.NewRGBA(image.Rect(0, 0, 100, 100))
+	poly.AddToImage(img, minX, minY, 5.0)
+
+	// 检查是否有像素被绘制
+	hasPixels := false
+	for y := 0; y < 100; y++ {
+		for x := 0; x < 100; x++ {
+			c := img.RGBAAt(x, y)
+			if c.A > 0 {
+				hasPixels = true
+				break
+			}
+		}
+		if hasPixels {
+			break
+		}
+	}
+
+	if !hasPixels {
+		t.Error("多边形应该在图像上绘制了像素")
+	}
+}