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#include "BlendedBlock.h"
#include "common.h"
BlendedBlock::BlendedBlock( Block *inA, Block *inB, int inNumTransitionSteps )
: mA( inA ), mB( inB ), mStepsTotal( inNumTransitionSteps ),
mStepsDone( 0 ), mDummy( false ) {
if( mA != NULL ) {
mDepthLayer = mA->mDepthLayer;
}
else if( mB != NULL ) {
mDepthLayer = mB->mDepthLayer;
}
else {
// dummy
mDepthLayer = 0;
mDummy = true;
}
}
double BlendedBlock::getFractionDone() {
return (double)mStepsDone / (double)mStepsTotal;
}
void BlendedBlock::draw( double inRotation, Vector3D *inPosition,
double inScale,
double inFadeFactor,
Color *inColor ) {
if( mDummy ) {
return;
}
double blendB = (double)mStepsDone / (double)mStepsTotal;
blendB = smoothBlend( blendB );
double blendA = 1.0 - blendB;
if( mA != NULL ) {
mA->draw( inRotation, inPosition,
inScale, blendA * inFadeFactor,
inColor );
}
if( mB != NULL ) {
mB->draw( inRotation, inPosition,
inScale, blendB * inFadeFactor,
inColor );
}
}
void BlendedBlock::step() {
mStepsDone ++;
if( mStepsDone > mStepsTotal ) {
mStepsDone = mStepsTotal;
}
if( mDummy ) {
return;
}
double blendB = (double)mStepsDone / (double)mStepsTotal;
blendB = smoothBlend( blendB );
double blendA = 1.0 - blendB;
mX = 0;
mY = 0;
mScale = 1.0;
if( mA != NULL && mB == NULL ) {
mX = mA->mX;
mY = mA->mY;
mScale = mA->mScale;
}
else if( mA == NULL && mB != NULL ) {
mX = mB->mX;
mY = mB->mY;
mScale = mB->mScale;
}
else if( mA != NULL && mB != NULL ) {
mX = blendA * mA->mX + blendB * mB->mX;
mY = blendA * mA->mY + blendB * mB->mY;
mScale = blendA * mA->mScale + blendB * mB->mScale;
}
}
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