Modified source engine (2017) developed by valve and leaked in 2020. Not for commercial purporses
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#include "cbase.h"
#include "softline.h"
#include <KeyValues.h>
// memdbgon must be the last include file in a .cpp file!!!
#include <tier0/memdbgon.h>
SoftLine::SoftLine(vgui::Panel *parent, const char *panelName, Color col) :
vgui::Panel(parent, panelName)
{
m_Color = col;
m_iCornerType = 0;
}
void SoftLine::Paint()
{
if (m_iCornerType == 1)
DrawSoftLine(1,GetTall() - 2, GetWide() - 2, 1, m_Color);
else
DrawSoftLine(1,1, GetWide() - 2, GetTall() - 2, m_Color);
}
int SoftLine::s_nWhiteTexture = -1;
void SoftLine::DrawSoftLine(float x, float y, float x2, float y2, Color c)
{
vgui::Vertex_t start, end;
if (s_nWhiteTexture == -1)
{
s_nWhiteTexture = vgui::surface()->CreateNewTextureID();
vgui::surface()->DrawSetTextureFile( s_nWhiteTexture, "vgui/white" , true, false);
if (s_nWhiteTexture == -1)
return;
return;
}
// draw main line
vgui::surface()->DrawSetTexture(s_nWhiteTexture);
vgui::surface()->DrawSetColor(c);
//vgui::surface()->DrawLine(x,y,x2,y2);
start.Init(Vector2D(x,y), Vector2D(0,0));
end.Init(Vector2D(x2,y2), Vector2D(1,1));
DrawPolygonLine(start, end);
// draw translucent ones around it to give it some softness
vgui::surface()->DrawSetColor(c);
start.Init(Vector2D(x - 0.50f,y - 0.50f), Vector2D(0,0));
end.Init(Vector2D(x2 - 0.50f,y2 - 0.50f), Vector2D(1,1));
DrawPolygonLine(start, end);
start.Init(Vector2D(x + 0.50f,y - 0.50f), Vector2D(0,0));
end.Init(Vector2D(x2 + 0.50f,y2 - 0.50f), Vector2D(1,1));
DrawPolygonLine(start, end);
start.Init(Vector2D(x - 0.50f,y + 0.50f), Vector2D(0,0));
end.Init(Vector2D(x2 - 0.50f,y2 + 0.50f), Vector2D(1,1));
DrawPolygonLine(start, end);
start.Init(Vector2D(x + 0.50f,y + 0.50f), Vector2D(0,0));
end.Init(Vector2D(x2 + 0.50f,y2 + 0.50f), Vector2D(1,1));
DrawPolygonLine(start, end);
}
// draws a line using polygon calls
void SoftLine::DrawPolygonLine(vgui::Vertex_t start, vgui::Vertex_t end, float width)
{
DrawPolygonLine(start.m_Position.x, start.m_Position.y, end.m_Position.x, end.m_Position.y, width);
}
void SoftLine::DrawPolygonLine(float x, float y, float x2, float y2, float width)
{
// find long edge
Vector2D start(x, y);
Vector2D end(x2, y2);
Vector2D long_edge = end - start;
// normalize and rotate 90 degrees to get our short edge
Vector2D short_edge = long_edge;
short_edge.NormalizeInPlace();
float newx = cos(1.5708f) * short_edge.x - sin(1.5708f) * short_edge.y;
float newy = sin(1.5708f) * short_edge.x - cos(1.5708f) * short_edge.y;
short_edge.x = newx;
short_edge.y = newy;
short_edge *= width;
vgui::Vertex_t points[4] =
{
vgui::Vertex_t( Vector2D(x, y) - short_edge * 0.5f, Vector2D(0,0) ),
vgui::Vertex_t( Vector2D(x, y) - short_edge * 0.5f + long_edge, Vector2D(1,0) ),
vgui::Vertex_t( Vector2D(x, y) + short_edge * 0.5f + long_edge, Vector2D(1,1) ),
vgui::Vertex_t( Vector2D(x, y) + short_edge * 0.5f, Vector2D(0,1) )
};
vgui::surface()->DrawTexturedPolygon(4, points);
}