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DynamicPrimitive.hx
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DynamicPrimitive.hx
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package h3d.prim;
class DynamicPrimitive extends Primitive {
var vbuf : hxd.FloatBuffer;
var ibuf : hxd.IndexBuffer;
var vsize : Int;
var isize : Int;
var format : hxd.BufferFormat;
/** Minimum number of elements in vertex buffer **/
public var minVSize = 0;
/** Minimum number of elements in index index buffer **/
public var minISize = 0;
public var bounds = new h3d.col.Bounds();
public function new( format ) {
this.format = format;
}
override function getBounds() {
return bounds;
}
public function getBuffer( vertices : Int ) {
if( vbuf == null ) vbuf = hxd.impl.Allocator.get().allocFloats(vertices * format.stride) else vbuf.grow(vertices * format.stride);
vsize = vertices;
return vbuf;
}
public function getIndexes( count : Int ) {
if( ibuf == null ) ibuf = hxd.impl.Allocator.get().allocIndexes(count) else ibuf.grow(count);
isize = count;
return ibuf;
}
public function flush() {
var alloc = hxd.impl.Allocator.get();
if( vsize == 0 || isize == 0 ) {
if( buffer != null ) {
alloc.disposeBuffer(buffer);
buffer = null;
}
if( indexes != null ) {
alloc.disposeIndexBuffer(indexes);
indexes = null;
}
return;
}
if( buffer != null && (buffer.isDisposed() || buffer.vertices < vsize) ) {
alloc.disposeBuffer(buffer);
buffer = null;
}
if( indexes != null && (indexes.isDisposed() || indexes.count < isize) ) {
alloc.disposeIndexBuffer(indexes);
indexes = null;
}
if( buffer == null )
buffer = alloc.allocBuffer(hxd.Math.imax(minVSize, vsize), format, Dynamic);
if( indexes == null )
indexes = alloc.allocIndexBuffer(hxd.Math.imax(minISize, isize));
buffer.uploadFloats(vbuf, 0, vsize);
indexes.uploadIndexes(ibuf, 0, isize);
}
override function dispose() {
var alloc = hxd.impl.Allocator.get();
if( buffer != null ) {
alloc.disposeBuffer(buffer);
buffer = null;
}
if( vbuf != null ) {
alloc.disposeFloats(vbuf);
vbuf = null;
}
if( ibuf != null ) {
alloc.disposeIndexes(ibuf);
ibuf = null;
}
super.dispose();
}
override function triCount() {
return Std.int(isize / 3);
}
override public function render(engine:h3d.Engine) {
if( buffer != null ) engine.renderIndexed(buffer, indexes, 0, triCount());
}
}