comparison CollidoscopeApp/src/Chunk.cpp @ 0:02467299402e

First import

CollidoscopeApp for Raspberry Pi
JackDevice
Teensy code for Collidoscope

+#include "Chunk.h"
+#include "DrawInfo.h"
+
+
+#include "cinder/gl/gl.h"
+
+
+Chunk::Chunk( size_t index ) :
+    mIndex( index ),
+    mAudioTop(0.0f),
+    mAudioBottom(0.0f)
+    {}
+
+
+void update( const DrawInfo& di )
+{
+
+}
+
+void Chunk::update( const DrawInfo &di )
+{
+    using namespace ci;
+    /* if resetting animate the chunks to shrink to 0 size */
+    if ( mResetting ){
+        if ( mAnimate > 0.0f ){
+            mAnimate -= 0.1f;
+            if ( mAnimate <= 0.0f ){
+                mAnimate = 0.0f;
+                mResetting = false;
+                mAudioTop = 0.0f;
+                mAudioBottom = 0.0f;
+            }
+        }
+    }
+    /* animate makes the chunks pop nicely when they are created */
+    else if ( mAnimate < 1.0f ){
+        mAnimate += 0.3333f; // in three (namely 1/0.333) steps
+        if ( mAnimate > 1.0f ){ // clip to one
+            mAnimate = 1.0f;
+        }
+    }
+
+    mX = di.flipX( 1 + (mIndex * (2 + kWidth)) ); // FIXME this should happen only once when resized 
+}
+
+void Chunk::draw( const DrawInfo& di, ci::gl::BatchRef &batch ){
+    using namespace ci;
+	
+    gl::pushModelMatrix();
+
+    const float chunkHeight = mAnimate * mAudioTop * di.getMaxChunkHeight();
+
+    // place the chunk in the right position brigns back the y of chunkHeight/2 so
+    // so that after scaling the wave is still centered at the wave center 
+    gl::translate( mX, di.getWaveCenterY() - ( chunkHeight / 2 ) - 1 );
+
+    // FIXME todo use max between top and bottom
+    // scale according to audio amplitude 
+    gl::scale( 1.0f, chunkHeight );
+    batch->draw();
+    
+    
+    gl::popModelMatrix();
+}
+
+
+void Chunk::drawBar( const DrawInfo& di, ci::gl::BatchRef &batch ){
+	using namespace ci;
+
+    gl::pushModelMatrix();
+
+    const float barHeight = di.getSelectionBarHeight();
+
+    gl::translate( mX, di.getWaveCenterY() - ( barHeight / 2 ) - 1 );
+    gl::scale( 1.0f, barHeight );
+
+    batch->draw();
+
+    gl::popModelMatrix();
+}
+
+
+const float Chunk::kWidth = 7.0f;
+const float Chunk::kHalfWidth = 3.5f;