poc of functions

internal/thumbnail/thumbnail.go

@@ -0,0 +1,46 @@
+package thumbnail
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/sotigr/slic3r-api/internal/cli"
+)
+
+// ThumbnailService generates preview images of 3D model files.
+type ThumbnailService interface {
+	Generate(ctx context.Context, modelPath, outputPath string) error
+}
+
+type f3dService struct{}
+
+// NewThumbnailService creates a ThumbnailService backed by the f3d renderer.
+func NewThumbnailService() ThumbnailService {
+	return &f3dService{}
+}
+
+func (s *f3dService) Generate(ctx context.Context, modelPath, outputPath string) error {
+	pipe := cli.Pipe{
+		Command: "f3d",
+		Args: []string{
+			modelPath,
+			"--resolution=128,128",
+			"-a",
+			"--anti-aliasing-mode=taa",
+			"--filename=false",
+			"--metadata=false",
+			"--color=#999",
+			"-t",
+			"--grid=false",
+			"--axis=false",
+			"--no-background",
+			"--output=" + outputPath,
+		},
+	}
+
+	_, _, err := pipe.Execute(ctx)
+	if err != nil {
+		return fmt.Errorf("f3d: %w", err)
+	}
+	return nil
+}