Revision 98455aa2
Added by Leszek Koltunski over 7 years ago
| src/main/java/org/distorted/library/DistortedFramebuffer.java | ||
|---|---|---|
| 63 | 63 |
|
| 64 | 64 |
private void createProjection() |
| 65 | 65 |
{
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if( mFOV>0.0f ) // perspective projection
|
|
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if( mWidth>0 && mHeight>0 )
|
|
| 67 | 67 |
{
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float ratio = (float) mWidth / mHeight; |
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float left =-ratio; |
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float right = ratio; |
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float bottom = -1.0f; |
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float top = 1.0f; |
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float near= (float)(top / Math.tan(mFOV*Math.PI/360)); |
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mDistance = (int)(mHeight*near/(top-bottom)); |
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float far = 2*mDistance-near; |
|
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mDepth = (int)((far-near)/2); |
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if( far<=0 ) |
|
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if( mFOV>0.0f ) // perspective projection |
|
| 79 | 69 |
{
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android.util.Log.e("FBO", "error: far<=0. width="+mWidth+" height="+mHeight+
|
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" mFOV="+mFOV+" mDistance="+mDistance+" far="+far+" near="+near); |
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} |
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else |
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float left =(-mX-mWidth )/mHeight; |
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float right =(-mX+mWidth )/mHeight; |
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float bottom =(-mY-mHeight)/mHeight; |
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float top =(-mY+mHeight)/mHeight; |
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float near= (float)( (top-bottom) / (2*Math.tan(mFOV*Math.PI/360)) ); |
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mDistance = (int)(mHeight*near/(top-bottom)); |
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float far = 2*mDistance-near; |
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mDepth = (int)((far-near)/2); |
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|
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| 84 | 79 |
Matrix.frustumM(mProjectionMatrix, 0, left, right, bottom, top, near, far); |
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} |
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else // parallel projection |
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{
|
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float left =-mWidth/2; |
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float right = mWidth/2; |
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float bottom =-mHeight/2; |
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float top = mHeight/2; |
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float near= (float)(top / Math.tan(Math.PI/360)); |
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mDistance = (int)(mHeight*near/(top-bottom)); |
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float far = 2*mDistance-near; |
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mDepth = (int)((far-near)/2); |
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|
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Matrix.orthoM(mProjectionMatrix, 0, left, right, bottom, top, near, far); |
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} |
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else // parallel projection |
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{
|
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float left =-mX-mWidth/2; |
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float right =-mX+mWidth/2; |
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float bottom =-mY-mHeight/2; |
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float top =-mY+mHeight/2; |
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float near= (float)( (top-bottom) / (2*Math.tan(Math.PI/360)) ); |
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mDistance = (int)(mHeight*near/(top-bottom)); |
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float far = 2*mDistance-near; |
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mDepth = (int)((far-near)/2); |
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|
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Matrix.orthoM(mProjectionMatrix, 0, left, right, bottom, top, near, far); |
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} |
|
| 98 | 94 |
} |
| 99 | 95 |
} |
| 100 | 96 |
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Also available in: Unified diff
Turn the former 'FOV' app into 'Projection' app that also checks the (x,y) the camera looks at.