aboutsummaryrefslogtreecommitdiff
path: root/engines/sword25/gfx/image/vectorimage.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'engines/sword25/gfx/image/vectorimage.cpp')
-rw-r--r--engines/sword25/gfx/image/vectorimage.cpp102
1 files changed, 51 insertions, 51 deletions
diff --git a/engines/sword25/gfx/image/vectorimage.cpp b/engines/sword25/gfx/image/vectorimage.cpp
index 094e6a59a8..241e80bad3 100644
--- a/engines/sword25/gfx/image/vectorimage.cpp
+++ b/engines/sword25/gfx/image/vectorimage.cpp
@@ -47,15 +47,15 @@ namespace Sword25 {
#define BEZSMOOTHNESS 0.5
// -----------------------------------------------------------------------------
-// SWF Datentypen
+// SWF datatype
// -----------------------------------------------------------------------------
// -----------------------------------------------------------------------------
-// Bitstream Hilfsklasse
+// Bitstream helper class
// -----------------------------------------------------------------------------
-// Das Parsen von SWF-Dateien erfordert sowohl bitweises Auslesen als auch an
-// Bytegrenzen ausgerichtetes Lesen.
-// Diese Klasse ist speziell dafür ausgestattet.
+// The parsing of SWF files requires both bitwise readout and on Byte boundaries
+// oriented reading.
+// This class is specially equipped for this.
// -----------------------------------------------------------------------------
class VectorImage::SWFBitStream {
@@ -85,10 +85,10 @@ public:
}
inline int32 getSignedBits(uint bitCount) {
- // Bits einlesen
+ // readout bits
uint32 temp = getBits(bitCount);
- // Falls das Sign-Bit gesetzt ist, den Rest des Rückgabewertes mit 1-Bits auffüllen (Sign Extension)
+ // If the sign-bit is set, fill the rest of the return value with 1-bit (sign extension)
if (temp & 1 << (bitCount - 1))
return (0xffffffff << bitCount) | temp;
else
@@ -151,28 +151,28 @@ private:
// -----------------------------------------------------------------------------
-// Konstanten und Hilfsfunktionen
+// Constants and utility functions
// -----------------------------------------------------------------------------
namespace {
// -----------------------------------------------------------------------------
-// Konstanten
+// Constants
// -----------------------------------------------------------------------------
-const uint32 MAX_ACCEPTED_FLASH_VERSION = 3; // Die höchste Flash-Dateiversion, die vom Lader akzeptiert wird
+const uint32 MAX_ACCEPTED_FLASH_VERSION = 3; // The maximum flash file version that is accepted by the loader
// -----------------------------------------------------------------------------
-// Konvertiert SWF-Rechteckdaten in einem Bitstrom in Common::Rect-Objekte
+// Converts SWF rectangle data in a bit stream in Common::Rect objects
// -----------------------------------------------------------------------------
Common::Rect flashRectToBSRect(VectorImage::SWFBitStream &bs) {
bs.flushByte();
- // Feststellen mit wie vielen Bits die einzelnen Komponenten kodiert sind
+ // Determines how many bits of the single components are encoded
uint32 bitsPerValue = bs.getBits(5);
- // Die einzelnen Komponenten einlesen
+ // Readout the single components
int32 xMin = bs.getSignedBits(bitsPerValue);
int32 xMax = bs.getSignedBits(bitsPerValue);
int32 yMin = bs.getSignedBits(bitsPerValue);
@@ -182,7 +182,7 @@ Common::Rect flashRectToBSRect(VectorImage::SWFBitStream &bs) {
}
// -----------------------------------------------------------------------------
-// Berechnet die Bounding-Box eines BS_VectorImageElement
+// Calculate the bounding box of a BS_VectorImageElement
// -----------------------------------------------------------------------------
Common::Rect CalculateBoundingBox(const VectorImageElement &vectorImageElement) {
@@ -214,17 +214,17 @@ Common::Rect CalculateBoundingBox(const VectorImageElement &vectorImageElement)
// -----------------------------------------------------------------------------
-// Konstruktion
+// Construction
// -----------------------------------------------------------------------------
VectorImage::VectorImage(const byte *pFileData, uint fileSize, bool &success, const Common::String &fname) : _pixelData(0), _fname(fname) {
success = false;
- // Bitstream-Objekt erzeugen
- // Im Folgenden werden die Dateidaten aus diesem ausgelesen.
+ // Create bitstream object
+ // In the following the file data will be readout of the bitstream object.
SWFBitStream bs(pFileData, fileSize);
- // SWF-Signatur überprüfen
+ // Check SWF signature
uint32 signature[3];
signature[0] = bs.getByte();
signature[1] = bs.getByte();
@@ -236,37 +236,37 @@ VectorImage::VectorImage(const byte *pFileData, uint fileSize, bool &success, co
return;
}
- // Versionsangabe überprüfen
+ // Check the version
uint32 version = bs.getByte();
if (version > MAX_ACCEPTED_FLASH_VERSION) {
error("File is of version %d. Highest accepted version is %d.", version, MAX_ACCEPTED_FLASH_VERSION);
return;
}
- // Dateigröße auslesen und mit der tatsächlichen Größe vergleichen
+ // Readout filesize and compare with the actual size
uint32 storedFileSize = bs.getUInt32();
if (storedFileSize != fileSize) {
error("File is not a valid SWF-file");
return;
}
- // SWF-Maße auslesen
+ // readout SWF size
Common::Rect movieRect = flashRectToBSRect(bs);
- // Framerate und Frameanzahl auslesen
+ // Get frame rate and frame count
/* uint32 frameRate = */
bs.getUInt16();
/* uint32 frameCount = */
bs.getUInt16();
- // Tags parsen
- // Da wir uns nur für das erste DefineShape-Tag interessieren
+ // Parse tags
+ // Because we are only interested in the first DifneShape-Tag...
bool keepParsing = true;
while (keepParsing) {
- // Tags beginnen immer an Bytegrenzen
+ // Tags always begin on byte boundaries
bs.flushByte();
- // Tagtyp und Länge auslesen
+ // Readout tag type and length
uint16 tagTypeAndLength = bs.getUInt16();
uint32 tagType = tagTypeAndLength >> 6;
uint32 tagLength = tagTypeAndLength & 0x3f;
@@ -286,13 +286,13 @@ VectorImage::VectorImage(const byte *pFileData, uint fileSize, bool &success, co
success = parseDefineShape(3, bs);
return;
default:
- // Unbekannte Tags ignorieren
+ // Ignore unknown tags
bs.skipBytes(tagLength);
}
}
- // Die Ausführung darf nicht an dieser Stelle ankommen: Entweder es wird ein Shape gefunden, dann wird die Funktion mit vorher verlassen, oder
- // es wird keines gefunden, dann tritt eine Exception auf sobald über das Ende der Datei hinaus gelesen wird.
+ // The execution must not arrive at this point: Either a shape is found, then the function will be leaved before, or it is found none, then
+ // an exception occurs as soon as it is read beyond of the end of file.
assert(false);
}
@@ -336,13 +336,13 @@ ArtBpath *VectorImage::storeBez(ArtBpath *bez, int lineStyle, int fillStyle0, in
bool VectorImage::parseDefineShape(uint shapeType, SWFBitStream &bs) {
/*uint32 shapeID = */bs.getUInt16();
- // Bounding Box auslesen
+ // readout bounding box
_boundingBox = flashRectToBSRect(bs);
- // Erstes Image-Element erzeugen
+ // create first image element
_elements.resize(1);
- // Styles einlesen
+ // read styles
uint numFillBits;
uint numLineBits;
if (!parseStyles(shapeType, bs, numFillBits, numLineBits))
@@ -352,7 +352,7 @@ bool VectorImage::parseDefineShape(uint shapeType, SWFBitStream &bs) {
uint fillStyle0 = 0;
uint fillStyle1 = 0;
- // Shaperecord parsen
+ // parse shaperecord
// ------------------
double curX = 0;
@@ -367,7 +367,7 @@ bool VectorImage::parseDefineShape(uint shapeType, SWFBitStream &bs) {
// Non-Edge Record
if (typeFlag == 0) {
- // Feststellen welche Parameter gesetzt werden
+ // Determines which parameters are set
uint32 stateNewStyles = bs.getBits(1);
uint32 stateLineStyle = bs.getBits(1);
uint32 stateFillStyle1 = bs.getBits(1);
@@ -378,10 +378,10 @@ bool VectorImage::parseDefineShape(uint shapeType, SWFBitStream &bs) {
uint prevFillStyle0 = fillStyle0;
uint prevFillStyle1 = fillStyle1;
- // End der Shape-Definition erreicht?
+ // End of the shape definition is reached?
if (!stateNewStyles && !stateLineStyle && !stateFillStyle0 && !stateFillStyle1 && !stateMoveTo) {
endOfShapeDiscovered = true;
- // Parameter dekodieren
+ // Decode parameters
} else {
if (stateMoveTo) {
uint32 moveToBits = bs.getBits(5);
@@ -410,7 +410,7 @@ bool VectorImage::parseDefineShape(uint shapeType, SWFBitStream &bs) {
numLineBits = 0;
}
- // Ein neuen Pfad erzeugen, es sei denn, es wurden nur neue Styles definiert
+ // Create a new path, unless there were only defined new styles
if (stateLineStyle || stateFillStyle0 || stateFillStyle1 || stateMoveTo) {
// Store previous curve if any
if (bezNodes) {
@@ -426,15 +426,15 @@ bool VectorImage::parseDefineShape(uint shapeType, SWFBitStream &bs) {
}
if (stateNewStyles) {
- // An dieser Stelle werden in Flash die alten Style-Definitionen verworfen und mit den neuen überschrieben.
- // Es wird ein neues Element begonnen.
+ // The old style definitions will be discarded and overwritten with the new at this point in Flash.
+ // A new element will be started with a new element.
_elements.resize(_elements.size() + 1);
if (!parseStyles(shapeType, bs, numFillBits, numLineBits))
return false;
}
}
} else {
- // Edge Record
+ // Edge record
uint32 edgeFlag = bs.getBits(1);
uint32 numBits = bs.getBits(4) + 2;
@@ -499,7 +499,7 @@ bool VectorImage::parseDefineShape(uint shapeType, SWFBitStream &bs) {
free(bez);
- // Bounding-Boxes der einzelnen Elemente berechnen
+ // Calculate the bounding boxes of each element
Common::Array<VectorImageElement>::iterator it = _elements.begin();
for (; it != _elements.end(); ++it)
it->_boundingBox = CalculateBoundingBox(*it);
@@ -513,16 +513,16 @@ bool VectorImage::parseDefineShape(uint shapeType, SWFBitStream &bs) {
bool VectorImage::parseStyles(uint shapeType, SWFBitStream &bs, uint &numFillBits, uint &numLineBits) {
bs.flushByte();
- // Fillstyles parsen
+ // Parse fill styles
// -----------------
- // Anzahl an Fillstyles bestimmen
+ // Determine number of fill styles
uint fillStyleCount = bs.getByte();
if (fillStyleCount == 0xff)
fillStyleCount = bs.getUInt16();
- // Alle Fillstyles einlesen, falls ein Fillstyle mit Typ != 0 gefunden wird, wird das Parsen abgebrochen.
- // Es wird nur "solid fill" (Typ 0) unterstützt.
+ // Readout all fill styles. If a fill style with Typ != 0 is found, the parsing is aborted.
+ // Only "solid fill" (Typ 0) is supported.
_elements.back()._fillStyles.reserve(fillStyleCount);
for (uint i = 0; i < fillStyleCount; ++i) {
byte type = bs.getByte();
@@ -543,15 +543,15 @@ bool VectorImage::parseStyles(uint shapeType, SWFBitStream &bs, uint &numFillBit
_elements.back()._fillStyles.push_back(color);
}
- // Linestyles parsen
+ // Line styles parsen
// -----------------
- // Anzahl an Linestyles bestimmen
+ // Determine number of line styles
uint lineStyleCount = bs.getByte();
if (lineStyleCount == 0xff)
lineStyleCount = bs.getUInt16();
- // Alle Linestyles einlesen
+ // Readout all line styles
_elements.back()._lineStyles.reserve(lineStyleCount);
for (uint i = 0; i < lineStyleCount; ++i) {
double width = bs.getUInt16();
@@ -569,7 +569,7 @@ bool VectorImage::parseStyles(uint shapeType, SWFBitStream &bs, uint &numFillBit
_elements.back()._lineStyles.push_back(VectorImageElement::LineStyleType(width, color));
}
- // Bitbreite für die folgenden Styleindizes auslesen
+ // Readout the bit width for the following style indices
numFillBits = bs.getBits(4);
numLineBits = bs.getBits(4);
@@ -608,11 +608,11 @@ bool VectorImage::blit(int posX, int posY,
static int oldWidth = -2;
static int oldHeight = -2;
- // Falls Breite oder Höhe 0 sind, muss nichts dargestellt werden.
+ // If width or height to 0, nothing needs to be shown.
if (width == 0 || height == 0)
return true;
- // Feststellen, ob das alte Bild im Cache nicht wiederbenutzt werden kann und neu Berechnet werden muss
+ // Determine if the old image in the cache can not be reused and must be recalculated
if (!(oldThis == this && oldWidth == width && oldHeight == height)) {
render(width, height);
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-23 12:16:02 +0000