deargui-vpl/ref/virtools/Samples/Behaviors/Interface/Sources/DrawingPrimitives.cpp

#include "CKAll.h"

#include "DrawingPrimitives.h"

void 
DrawFillRectangle(CKRenderContext *dev,CKDWORD col,CKMaterial* mat,const VxRect& rect,const VxRect& uvrect,int mode)
{
	CKDWORD oldfog = dev->GetState(VXRENDERSTATE_FOGENABLE);
	dev->SetState(VXRENDERSTATE_FOGENABLE,		FALSE);

	if (mat) mat->SetAsCurrent(dev);
	else {
		dev->SetTexture(NULL);
		dev->SetState(VXRENDERSTATE_CULLMODE,		VXCULL_NONE);
		dev->SetState(VXRENDERSTATE_ZWRITEENABLE ,	FALSE);
		if (ColorGetAlpha(col) == 255) {
			dev->SetState(VXRENDERSTATE_ALPHABLENDENABLE,	FALSE);
			dev->SetState(VXRENDERSTATE_SRCBLEND,		VXBLEND_ONE);
			dev->SetState(VXRENDERSTATE_DESTBLEND,		VXBLEND_ZERO);
		} else {
			dev->SetState(VXRENDERSTATE_ALPHABLENDENABLE,	TRUE);
			dev->SetState(VXRENDERSTATE_SRCBLEND,		VXBLEND_SRCALPHA);
			dev->SetState(VXRENDERSTATE_DESTBLEND,		VXBLEND_INVSRCALPHA);
		}

	}

	VxDrawPrimitiveData* data;
	if(mode & (TRANSFORM|LIGHTING))	data = dev->GetDrawPrimitiveStructure(CKRST_DP_TR_VNT,4);
	else
	if(mode & TRANSFORM)	data = dev->GetDrawPrimitiveStructure(CKRST_DP_TR_VCT,4);
	else
	if(mode & LIGHTING)	data = dev->GetDrawPrimitiveStructure(CKRST_DP_TR_VNT,4);
	else 
		data = dev->GetDrawPrimitiveStructure(CKRST_DP_CL_VCT,4);

	XPtrStrided<VxUV>		uvs		= data->TexCoord;
	XPtrStrided<VxVector4> positions= data->Positions;
	XPtrStrided<VxVector>	normals	= data->Normals;
	XPtrStrided<DWORD>		 colors	= data->Colors;
	
	if(mode & LIGHTING) {
		/////////////////
		// Normals
		
		// Normal 0
		normals->Set(0 , 0 , 1.0f);
		++normals;
		// Normal 1
		normals->Set(0 , 0 , 1.0f);
		++normals;
		// Normal 2
		normals->Set(0 , 0 , 1.0f);
		++normals;
		// Normal 3
		normals->Set(0 , 0 , 1.0f);
		++normals;
		
	} else {
		/////////////////
		// Colors
		VxFillStructure(4,colors,4,&col);
	}
	
	/////////////////
	// UVs
	
	// Uvs
	uvs[0].Set(uvrect.left , uvrect.top );
	uvs[1].Set(uvrect.right , uvrect.top );
	uvs[2].Set(uvrect.right , uvrect.bottom );
	uvs[3].Set(uvrect.left , uvrect.bottom );
	
	/////////////////
	// Positions
	
	// Vertex 0
	positions->Set(rect.left ,  rect.top , 0.0f , 1.0f );
	++positions;
	// Vertex 1
	positions->Set(rect.right ,  rect.top , 0.0f , 1.0f );
	++positions;
	// Vertex 2
	positions->Set(rect.right ,  rect.bottom , 0.0f , 1.0f );
	++positions;
	// Vertex 3
	positions->Set(rect.left ,  rect.bottom , 0.0f , 1.0f );
	++positions;
	
	// the drawing itself
	dev->DrawPrimitive( VX_TRIANGLEFAN, (WORD*)0, 4, data );

	if (oldfog)
		dev->SetState(VXRENDERSTATE_FOGENABLE,oldfog);
	
	
}

void 
DrawBorderRectangle(CKRenderContext *dev,CKDWORD col,CKMaterial* mat,const VxRect& screen,const float bsize)
{
	VxRect rect = screen;

	if (mat) mat->SetAsCurrent(dev);
	else {
		dev->SetTexture(NULL);
		dev->SetState(VXRENDERSTATE_CULLMODE,		VXCULL_NONE);
		dev->SetState(VXRENDERSTATE_ZWRITEENABLE ,	FALSE);
		if (ColorGetAlpha(col) == 255) {
			dev->SetState(VXRENDERSTATE_ALPHABLENDENABLE,	FALSE);
			dev->SetState(VXRENDERSTATE_SRCBLEND,		VXBLEND_ONE);
			dev->SetState(VXRENDERSTATE_DESTBLEND,		VXBLEND_ZERO);
		} else {
			dev->SetState(VXRENDERSTATE_ALPHABLENDENABLE,	TRUE);
			dev->SetState(VXRENDERSTATE_SRCBLEND,		VXBLEND_SRCALPHA);
			dev->SetState(VXRENDERSTATE_DESTBLEND,		VXBLEND_INVSRCALPHA);
		}

	}

	VxDrawPrimitiveData* data;
	data = dev->GetDrawPrimitiveStructure(CKRST_DP_CL_VC,8);

	XPtrStrided<VxVector4> positions= data->Positions;
	
	/////////////////
	// Colors
		
	VxFillStructure(8,data->Colors,4,&col);
	
	/////////////////
	// Positions
	
	// Vertex 0
	positions->Set(rect.left ,  rect.top , 0.0f , 1.0f );
	++positions;
	// Vertex 1
	positions->Set(rect.right ,  rect.top , 0.0f , 1.0f );
	++positions;
	// Vertex 2
	positions->Set(rect.right ,  rect.bottom , 0.0f , 1.0f );
	++positions;
	// Vertex 3
	positions->Set(rect.left ,  rect.bottom , 0.0f , 1.0f );
	++positions;

	rect.Inflate(Vx2DVector(-bsize,-bsize));

	positions->Set(rect.left ,  rect.top , 0.0f , 1.0f );
	++positions;
	// Vertex 1
	positions->Set(rect.right ,  rect.top , 0.0f , 1.0f );
	++positions;
	// Vertex 2
	positions->Set(rect.right ,  rect.bottom , 0.0f , 1.0f );
	++positions;
	// Vertex 3
	positions->Set(rect.left ,  rect.bottom , 0.0f , 1.0f );
	++positions;

	// Indices
	CKWORD* indices = dev->GetDrawPrimitiveIndices(24);
	indices[0] = 0;indices[1] = 5;indices[2] = 4;
	indices[3] = 5;indices[4] = 0;indices[5] = 1;
	indices[6] = 5;indices[7] = 1;indices[8] = 2;
	indices[9] = 5;indices[10] = 2;indices[11] = 6;
	indices[12] = 6;indices[13] = 2;indices[14] = 3;
	indices[15] = 6;indices[16] = 3;indices[17] = 7;
	indices[18] = 7;indices[19] = 3;indices[20] = 4;
	indices[21] = 4;indices[22] = 3;indices[23] = 0;

	// the drawing itself
	dev->DrawPrimitive( VX_TRIANGLELIST, indices, 24, data );
}