cleanup

formats/dcc/dcc.go

@@ -8,7 +8,7 @@ import (
 type Sprite struct {
 }
 
-type bounds struct {
+type box struct {
 	x1 int
 	y1 int
 	x2 int

formats/dcc/direction.go

@@ -2,6 +2,7 @@ package dcc
 
 import (
 	"io"
+	"log"
 
 	"github.com/FooSoft/lazarus/streaming"
 )
@@ -48,41 +49,14 @@ func readDirection(reader io.ReadSeeker, fileHead fileHeader) (*direction, error
 		return nil, err
 	}
 
-	frameHeads, err := readFrameHeaders(bitReader, fileHead, *dirHead)
+	frameHeads, bounds, err := readFrameHeaders(bitReader, fileHead, *dirHead)
 	if err != nil {
 		return nil, err
 	}
 
-	var dirData direction
-	for i, frameHead := range frameHeads {
-		frameData := frame{
-			header: frameHead,
-			bounds: bounds{
-				x1: int(frameHead.OffsetX),
-				y1: int(frameHead.OffsetY) - int(frameHead.Height) + 1,
-				x2: int(frameHead.OffsetX) + int(frameHead.Width),
-				y2: int(frameHead.OffsetY) + 1,
-			},
-		}
-
-		dirData.frames = append(dirData.frames, frameData)
-
-		if i == 0 {
-			dirData.bounds = frameData.bounds
-		} else {
-			if dirData.bounds.x1 > frameData.bounds.x1 {
-				dirData.bounds.x1 = frameData.bounds.x1
-			}
-			if dirData.bounds.y1 > frameData.bounds.y1 {
-				dirData.bounds.y1 = frameData.bounds.y1
-			}
-			if dirData.bounds.x2 < frameData.bounds.x2 {
-				dirData.bounds.x2 = frameData.bounds.x2
-			}
-			if dirData.bounds.y2 < frameData.bounds.y2 {
-				dirData.bounds.y2 = frameData.bounds.y2
-			}
-		}
+	dirData := direction{bounds: bounds}
+	for _, frameHead := range frameHeads {
+		dirData.frames = append(dirData.frames, newFrame(frameHead, *dirHead))
 	}
 
 	var entries []pixelBufferEntry
@@ -97,13 +71,14 @@ func readDirection(reader io.ReadSeeker, fileHead fileHeader) (*direction, error
 		return nil, err
 	}
 
+	log.Println(dirData.bounds)
 	return &dirData, nil
 }
 
 type direction struct {
 	header directionHeader
 	frames []frame
-	bounds bounds
+	bounds box
 }
 
 func (d *direction) decodeStage1(bitReader *streaming.BitReader, entries []pixelBufferEntry) ([]pixelBufferEntry, error) {

formats/dcc/frame.go

@@ -17,11 +17,6 @@ type frameHeader struct {
 	FrameBottomUp bool
 }
 
-type frame struct {
-	header frameHeader
-	bounds bounds
-}
-
 func readFrameHeader(bitReader *streaming.BitReader, dirHead directionHeader) (*frameHeader, error) {
 	var frameHead frameHeader
 
@@ -53,16 +48,56 @@ func readFrameHeader(bitReader *streaming.BitReader, dirHead directionHeader) (*
 	return &frameHead, nil
 }
 
-func readFrameHeaders(bitReader *streaming.BitReader, fileHead fileHeader, dirHead directionHeader) ([]frameHeader, error) {
-	var frameHeads []frameHeader
+func (h *frameHeader) bounds() box {
+	return box{
+		x1: int(h.OffsetX),
+		y1: int(h.OffsetY) - int(h.Height) + 1,
+		x2: int(h.OffsetX) + int(h.Width),
+		y2: int(h.OffsetY) + 1,
+	}
+}
+
+func readFrameHeaders(bitReader *streaming.BitReader, fileHead fileHeader, dirHead directionHeader) ([]frameHeader, box, error) {
+	var (
+		frameHeads []frameHeader
+		boundsAll  box
+	)
+
 	for i := 0; i < int(fileHead.FramesPerDir); i++ {
 		frameHead, err := readFrameHeader(bitReader, dirHead)
 		if err != nil {
-			return nil, err
+			return nil, box{}, err
+		}
+
+		bounds := frameHead.bounds()
+		if i == 0 {
+			boundsAll = bounds
+		} else {
+			if boundsAll.x1 > bounds.x1 {
+				boundsAll.x1 = bounds.x1
+			}
+			if boundsAll.y1 > bounds.y1 {
+				boundsAll.y1 = bounds.y1
+			}
+			if boundsAll.x2 < bounds.x2 {
+				boundsAll.x2 = bounds.x2
+			}
+			if boundsAll.y2 < bounds.y2 {
+				boundsAll.y2 = bounds.y2
+			}
 		}
 
 		frameHeads = append(frameHeads, *frameHead)
 	}
 
-	return frameHeads, nil
+	return frameHeads, boundsAll, nil
+}
+
+type frame struct {
+	header frameHeader
+}
+
+func newFrame(frameHead frameHeader, dirHead directionHeader) frame {
+	return frame{frameHead}
+
 }