void SpriteBatch::draw(const Vector3& dst, float width, float height, float u1, float v1, float u2, float v2, const Vector4& color,
const Vector2& rotationPoint, float rotationAngle)
{
// Expand dst by scale into 4 points.
float x2 = dst.x + width;
float y2 = dst.y + height;
Vector2 upLeft(dst.x, dst.y);
Vector2 upRight(x2, dst.y);
Vector2 downLeft(dst.x, y2);
Vector2 downRight(x2, y2);
// Rotate points around rotationAxis by rotationAngle.
Vector2 pivotPoint(rotationPoint);
pivotPoint.x *= width;
pivotPoint.y *= height;
pivotPoint.x += dst.x;
pivotPoint.y += dst.y;
upLeft.rotate(pivotPoint, rotationAngle);
upRight.rotate(pivotPoint, rotationAngle);
downLeft.rotate(pivotPoint, rotationAngle);
downRight.rotate(pivotPoint, rotationAngle);
// Write sprite vertex data.
static SpriteVertex v[4];
ADD_SPRITE_VERTEX(v[0], upLeft.x, upLeft.y, dst.z, u1, v1, color.x, color.y, color.z, color.w);
ADD_SPRITE_VERTEX(v[1], upRight.x, upRight.y, dst.z, u1, v2, color.x, color.y, color.z, color.w);
ADD_SPRITE_VERTEX(v[2], downLeft.x, downLeft.y, dst.z, u2, v1, color.x, color.y, color.z, color.w);
ADD_SPRITE_VERTEX(v[3], downRight.x, downRight.y, dst.z, u2, v2, color.x, color.y, color.z, color.w);
static unsigned short indices[4] = { 0, 1, 2, 3 };
_batch->add(v, 4, indices, 4);
}
void PlayerCameraOgre::adjustDistance()
{
const mp::Vector3f &playerPos = mPlayer->model()->getPosition();
mp::Vector3f pivotPoint(playerPos.getX(), playerPos.getY() + mPivotHeight, playerPos.getZ());
mp::Vector3f pivotToPos = mRealPosition - pivotPoint;
pivotToPos.normalize();
mp::Vector3f newPos(pivotPoint + pivotToPos * mCameraDistance);
mRealPosition = newPos;
if (newPos.getY() <= 0)
newPos.y() = 0.01f;
setPosition(newPos);
}
void PlayerCameraOgre::onRightButtonPressed()
{
if (!mRightButtonPressedLastFrame)
mMousePosLastFrame = mMouse->getPosition();
mp::Vector2i diff = mMouse->getPosition() - mMousePosLastFrame;
const mp::Vector3f &playerPos = mPlayer->model()->getPosition();
Ogre::Vector3 pivotPoint(playerPos.getX(), playerPos.getY() + mPivotHeight, playerPos.getZ());
float yaw = (float)diff.getX() * CAMERA_SPEED;
float pitch = (float)-diff.getY() * CAMERA_SPEED;
Ogre::Quaternion yawQuat;
yawQuat.FromAngleAxis(Ogre::Radian(yaw), Ogre::Vector3::UNIT_Y);
Ogre::Matrix3 yawMat;
yawQuat.ToRotationMatrix(yawMat);
Ogre::Vector3 pivotToPos = Ogre::Vector3(mRealPosition.getX(), mRealPosition.getY(), mRealPosition.getZ()) - pivotPoint;
Ogre::Matrix4 pos(1, 0, 0, pivotToPos.x,
0, 1, 0, pivotToPos.y,
0, 0, 1, pivotToPos.z,
0, 0, 0, 1);
Ogre::Vector3 xz(pivotToPos.x, 0, pivotToPos.z);
Ogre::Vector3 norm(-xz.z, 0, xz.x);
Ogre::Quaternion pitchQuat;
pitchQuat.FromAngleAxis(Ogre::Radian(pitch), norm);
Ogre::Matrix3 pitchMat;
pitchQuat.ToRotationMatrix(pitchMat);
Ogre::Matrix4 toPivot(1, 0, 0, pivotPoint.x,
0, 1, 0, pivotPoint.y,
0, 0, 1, pivotPoint.z,
0, 0, 0, 1);
Ogre::Matrix4 newPosMat = pos * pitchMat * yawMat * toPivot;
newPosMat = newPosMat.inverse();
Ogre::Vector3 newPos = newPosMat.getTrans();
mRealPosition.set(-newPos.x, -newPos.y, -newPos.z);
setPosition(mRealPosition);
lookAt(pivotPoint.x, pivotPoint.y, pivotPoint.z);
adjustDistance();
mMousePosLastFrame = mMouse->getPosition();
mRightButtonPressedLastFrame = true;
}
void SpriteBatch::draw(float x, float y, float z, float width, float height, float u1, float v1, float u2, float v2, const Vector4& color,
const Vector2& rotationPoint, float rotationAngle, bool positionIsCenter)
{
// Treat the given position as the center if the user specified it as such.
if (positionIsCenter)
{
x -= 0.5f * width;
y -= 0.5f * height;
}
// Expand the destination position by scale into 4 points.
float x2 = x + width;
float y2 = y + height;
Vector2 upLeft(x, y);
Vector2 upRight(x2, y);
Vector2 downLeft(x, y2);
Vector2 downRight(x2, y2);
// Rotate points around rotationAxis by rotationAngle.
if (rotationAngle != 0)
{
Vector2 pivotPoint(rotationPoint);
pivotPoint.x *= width;
pivotPoint.y *= height;
pivotPoint.x += x;
pivotPoint.y += y;
upLeft.rotate(pivotPoint, rotationAngle);
upRight.rotate(pivotPoint, rotationAngle);
downLeft.rotate(pivotPoint, rotationAngle);
downRight.rotate(pivotPoint, rotationAngle);
}
// Write sprite vertex data.
static SpriteVertex v[4];
SPRITE_ADD_VERTEX(v[0], downLeft.x, downLeft.y, z, u1, v1, color.x, color.y, color.z, color.w);
SPRITE_ADD_VERTEX(v[1], upLeft.x, upLeft.y, z, u1, v2, color.x, color.y, color.z, color.w);
SPRITE_ADD_VERTEX(v[2], downRight.x, downRight.y, z, u2, v1, color.x, color.y, color.z, color.w);
SPRITE_ADD_VERTEX(v[3], upRight.x, upRight.y, z, u2, v2, color.x, color.y, color.z, color.w);
static unsigned short indices[4] = { 0, 1, 2, 3 };
_batch->add(v, 4, indices, 4);
}
