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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
// TODO: move this out of Sim, this is rendering code!
#include "LineDrawer.h"
#include "Rendering/GlobalRendering.h"
#include "Game/UI/CommandColors.h"
CLineDrawer lineDrawer;
CLineDrawer::CLineDrawer()
: lineStipple(false)
, useColorRestarts(false)
, useRestartColor(false)
, restartAlpha(0.0f)
, restartColor(NULL)
, lastPos(ZeroVector)
, lastColor(NULL)
, stippleTimer(0.0f)
{
lines.reserve(32);
stippled.reserve(32);
}
void CLineDrawer::UpdateLineStipple()
{
stippleTimer += (globalRendering->lastFrameTime * cmdColors.StippleSpeed());
stippleTimer = fmod(stippleTimer, (16.0f / 20.0f));
}
void CLineDrawer::SetupLineStipple()
{
const unsigned int stipPat = (0xffff & cmdColors.StipplePattern());
if ((stipPat != 0x0000) && (stipPat != 0xffff)) {
lineStipple = true;
} else {
lineStipple = false;
return;
}
const unsigned int fullPat = (stipPat << 16) | (stipPat & 0x0000ffff);
const int shiftBits = 15 - (int(stippleTimer * 20.0f) % 16);
glLineStipple(cmdColors.StippleFactor(), (fullPat >> shiftBits));
}
void CLineDrawer::DrawAll()
{
if (lines.empty() && stippled.empty())
return;
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_COLOR_ARRAY);
glDisable(GL_TEXTURE_2D);
glDisable(GL_DEPTH_TEST);
glDisable(GL_LINE_STIPPLE);
for (int i = 0; i<lines.size(); ++i) {
int size = lines[i].verts.size();
if(size > 0) {
glColorPointer(4, GL_FLOAT, 0, &lines[i].colors[0]);
glVertexPointer(3, GL_FLOAT, 0, &lines[i].verts[0]);
glDrawArrays(lines[i].type, 0, size/3);
}
}
if (!stippled.empty()) {
glEnable(GL_LINE_STIPPLE);
for (int i = 0; i<stippled.size(); ++i) {
int size = stippled[i].verts.size();
if(size > 0) {
glColorPointer(4, GL_FLOAT, 0, &stippled[i].colors[0]);
glVertexPointer(3, GL_FLOAT, 0, &stippled[i].verts[0]);
glDrawArrays(stippled[i].type, 0, size/3);
}
}
glDisable(GL_LINE_STIPPLE);
}
glDisableClientState(GL_COLOR_ARRAY);
glDisableClientState(GL_VERTEX_ARRAY);
glEnable(GL_DEPTH_TEST);
lines.clear();
stippled.clear();
}
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