Initial commit.

blitz3d/camera.cpp

@@ -0,0 +1,103 @@
+
+#include "std.h"
+#include "camera.h"
+
+extern gxScene *gx_scene;
+
+Camera::Camera(){
+	setZoom( 1 );
+	setRange( 1,1000 );
+	setViewport( 0,0,0,0 );
+	setClsColor( Vector() );
+	setClsMode( true,true );
+	setProjMode( PROJ_PERSP );
+	setFogRange( 1,1000 );
+	setFogColor( Vector() );
+	setFogMode( gxScene::FOG_NONE );
+}
+
+void Camera::setZoom( float z ){
+	zoom=z;
+	local_valid=false;
+}
+
+void Camera::setRange( float n,float f ){
+	frustum_nr=n;frustum_fr=f;
+	local_valid=false;
+}
+
+void Camera::setViewport( int x,int y,int w,int h ){
+	vp_x=x;vp_y=y;vp_w=w;vp_h=h;
+	local_valid=false;
+}
+
+void Camera::setClsColor( const Vector &v ){
+	cls_color=v;
+}
+
+void Camera::setClsMode( bool c,bool z ){
+	cls_argb=c;cls_z=z;
+}
+
+void Camera::setProjMode( int mode ){
+	proj_mode=mode;
+}
+
+void Camera::setFogColor( const Vector &v ){
+	fog_color=v;
+}
+
+void Camera::setFogRange( float nr,float fr ){
+	fog_nr=nr;fog_fr=fr;
+}
+
+void Camera::setFogMode( int mode ){
+	fog_mode=mode;
+}
+
+const Frustum &Camera::getFrustum()const{
+	if( !local_valid ){
+		float ar=(float)vp_h/vp_w;
+		frustum_w=frustum_nr*2/zoom;
+		frustum_h=frustum_nr*2/zoom*ar;
+		new( &local_frustum ) Frustum( frustum_nr,frustum_fr,frustum_w,frustum_h );
+		local_valid=true;
+	}
+	return local_frustum;
+}
+
+float Camera::getFrustumNear()const{
+	return frustum_nr;
+}
+
+float Camera::getFrustumFar()const{
+	return frustum_fr;
+}
+
+float Camera::getFrustumWidth()const{
+	getFrustum();return frustum_w;
+}
+
+float Camera::getFrustumHeight()const{
+	getFrustum();return frustum_h;
+}
+
+void Camera::getViewport( int *x,int *y,int *w,int *h )const{
+	*x=vp_x;*y=vp_y;*w=vp_w;*h=vp_h;
+}
+
+bool Camera::beginRenderFrame(){
+	if( !proj_mode ) return false;
+	getFrustum();
+	gx_scene->setViewport( vp_x,vp_y,vp_w,vp_h );
+	gx_scene->clear( &(cls_color.x),1,1,cls_argb,cls_z );
+	if( proj_mode==PROJ_ORTHO ){
+		gx_scene->setOrthoProj( frustum_nr,frustum_fr,frustum_w,frustum_h );
+	}else{
+		gx_scene->setPerspProj( frustum_nr,frustum_fr,frustum_w,frustum_h );
+	}
+	gx_scene->setFogRange( fog_nr,fog_fr );
+	gx_scene->setFogColor( (float*)&fog_color.x );
+	gx_scene->setFogMode( fog_mode );
+	return true;
+}