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leocad/common/camera.cpp

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#include "lc_global.h"
#include "lc_math.h"
#include "lc_colors.h"
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <float.h>
#include "opengl.h"
#include "lc_file.h"
#include "camera.h"
#include "view.h"
#include "tr.h"
#include "lc_application.h"
#include "lc_context.h"
#define LC_CAMERA_POSITION_EDGE 7.5f
#define LC_CAMERA_TARGET_EDGE 7.5f
#define LC_CAMERA_SAVE_VERSION 7 // LeoCAD 0.80
lcCamera::lcCamera(bool Simple)
: lcObject(LC_OBJECT_CAMERA)
{
Initialize();
if (Simple)
mState |= LC_CAMERA_SIMPLE;
else
{
mPosition = lcVector3(-250.0f, -250.0f, 75.0f);
mTargetPosition = lcVector3(0.0f, 0.0f, 0.0f);
mUpVector = lcVector3(-0.2357f, -0.2357f, 0.94281f);
ChangeKey(mPositionKeys, mPosition, 1, true);
ChangeKey(mTargetPositionKeys, mTargetPosition, 1, true);
ChangeKey(mUpVectorKeys, mUpVector, 1, true);
UpdatePosition(1);
}
}
lcCamera::lcCamera(float ex, float ey, float ez, float tx, float ty, float tz)
: lcObject(LC_OBJECT_CAMERA)
{
// Fix the up vector
lcVector3 UpVector(0, 0, 1), FrontVector(ex - tx, ey - ty, ez - tz), SideVector;
FrontVector.Normalize();
if (FrontVector == UpVector)
SideVector = lcVector3(1, 0, 0);
else
SideVector = lcCross(FrontVector, UpVector);
UpVector = lcCross(SideVector, FrontVector);
UpVector.Normalize();
Initialize();
ChangeKey(mPositionKeys, lcVector3(ex, ey, ez), 1, true);
ChangeKey(mTargetPositionKeys, lcVector3(tx, ty, tz), 1, true);
ChangeKey(mUpVectorKeys, UpVector, 1, true);
UpdatePosition(1);
}
lcCamera::~lcCamera()
{
}
void lcCamera::Initialize()
{
m_fovy = 30.0f;
m_zNear = 25.0f;
m_zFar = 12500.0f;
mState = 0;
m_pTR = NULL;
memset(m_strName, 0, sizeof(m_strName));
}
void lcCamera::CreateName(const lcArray<lcCamera*>& Cameras)
{
if (m_strName[0])
{
bool Found = false;
for (int CameraIdx = 0; CameraIdx < Cameras.GetSize(); CameraIdx++)
{
if (!strcmp(Cameras[CameraIdx]->m_strName, m_strName))
{
Found = true;
break;
}
}
if (!Found)
return;
}
int i, max = 0;
const char* Prefix = "Camera ";
for (int CameraIdx = 0; CameraIdx < Cameras.GetSize(); CameraIdx++)
if (strncmp(Cameras[CameraIdx]->m_strName, Prefix, strlen(Prefix)) == 0)
if (sscanf(Cameras[CameraIdx]->m_strName + strlen(Prefix), " %d", &i) == 1)
if (i > max)
max = i;
sprintf(m_strName, "%s %d", Prefix, max+1);
}
void lcCamera::SaveLDraw(QTextStream& Stream) const
{
QLatin1String LineEnding("\r\n");
Stream << QLatin1String("0 !LEOCAD CAMERA FOV ") << m_fovy << QLatin1String(" ZNEAR ") << m_zNear << QLatin1String(" ZFAR ") << m_zFar << LineEnding;
if (mPositionKeys.GetSize() > 1)
SaveKeysLDraw(Stream, mPositionKeys, "CAMERA POSITION_KEY ");
else
Stream << QLatin1String("0 !LEOCAD CAMERA POSITION ") << mPosition[0] << ' ' << mPosition[1] << ' ' << mPosition[2] << LineEnding;
if (mTargetPositionKeys.GetSize() > 1)
SaveKeysLDraw(Stream, mTargetPositionKeys, "CAMERA TARGET_POSITION_KEY ");
else
Stream << QLatin1String("0 !LEOCAD CAMERA TARGET_POSITION ") << mTargetPosition[0] << ' ' << mTargetPosition[1] << ' ' << mTargetPosition[2] << LineEnding;
if (mUpVectorKeys.GetSize() > 1)
SaveKeysLDraw(Stream, mUpVectorKeys, "CAMERA UP_VECTOR_KEY ");
else
Stream << QLatin1String("0 !LEOCAD CAMERA UP_VECTOR ") << mUpVector[0] << ' ' << mUpVector[1] << ' ' << mUpVector[2] << LineEnding;
Stream << QLatin1String("0 !LEOCAD CAMERA ");
if (IsHidden())
Stream << QLatin1String("HIDDEN");
if (IsOrtho())
Stream << QLatin1String("ORTHOGRAPHIC ");
Stream << QLatin1String("NAME ") << m_strName << LineEnding;
}
bool lcCamera::ParseLDrawLine(QTextStream& Stream)
{
while (!Stream.atEnd())
{
QString Token;
Stream >> Token;
if (Token == QLatin1String("HIDDEN"))
SetHidden(true);
else if (Token == QLatin1String("ORTHOGRAPHIC"))
SetOrtho(true);
else if (Token == QLatin1String("FOV"))
Stream >> m_fovy;
else if (Token == QLatin1String("ZNEAR"))
Stream >> m_zNear;
else if (Token == QLatin1String("ZFAR"))
Stream >> m_zFar;
else if (Token == QLatin1String("POSITION"))
Stream >> mPosition[0] >> mPosition[1] >> mPosition[2];
else if (Token == QLatin1String("TARGET_POSITION"))
Stream >> mTargetPosition[0] >> mTargetPosition[1] >> mTargetPosition[2];
else if (Token == QLatin1String("UP_VECTOR"))
Stream >> mUpVector[0] >> mUpVector[1] >> mUpVector[2];
else if (Token == QLatin1String("POSITION_KEY"))
LoadKeysLDraw(Stream, mPositionKeys);
else if (Token == QLatin1String("TARGET_POSITION_KEY"))
LoadKeysLDraw(Stream, mTargetPositionKeys);
else if (Token == QLatin1String("UP_VECTOR_KEY"))
LoadKeysLDraw(Stream, mUpVectorKeys);
else if (Token == QLatin1String("NAME"))
{
QString Name = Stream.readAll().trimmed();
QByteArray NameUtf = Name.toUtf8(); // todo: replace with qstring
strncpy(m_strName, NameUtf.constData(), sizeof(m_strName));
m_strName[sizeof(m_strName) - 1] = 0;
return true;
}
}
return false;
}
/////////////////////////////////////////////////////////////////////////////
// Camera save/load
bool lcCamera::FileLoad(lcFile& file)
{
lcuint8 version, ch;
version = file.ReadU8();
if (version > LC_CAMERA_SAVE_VERSION)
return false;
if (version > 5)
{
if (file.ReadU8() != 1)
return false;
lcuint16 time;
float param[4];
lcuint8 type;
lcuint32 n;
file.ReadU32(&n, 1);
while (n--)
{
file.ReadU16(&time, 1);
file.ReadFloats(param, 4);
file.ReadU8(&type, 1);
if (type == 0)
ChangeKey(mPositionKeys, lcVector3(param[0], param[1], param[2]), time, true);
else if (type == 1)
ChangeKey(mTargetPositionKeys, lcVector3(param[0], param[1], param[2]), time, true);
else if (type == 2)
ChangeKey(mUpVectorKeys, lcVector3(param[0], param[1], param[2]), time, true);
}
file.ReadU32(&n, 1);
while (n--)
{
file.ReadU16(&time, 1);
file.ReadFloats(param, 4);
file.ReadU8(&type, 1);
}
}
if (version == 4)
{
file.ReadBuffer(m_strName, 80);
m_strName[80] = 0;
}
else
{
ch = file.ReadU8();
if (ch == 0xFF)
return false; // don't read CString
file.ReadBuffer(m_strName, ch);
m_strName[ch] = 0;
}
if (version < 3)
{
double d[3];
float f[3];
file.ReadDoubles(d, 3);
f[0] = (float)d[0];
f[1] = (float)d[1];
f[2] = (float)d[2];
ChangeKey(mPositionKeys, lcVector3(f[0], f[1], f[2]), 1, true);
file.ReadDoubles(d, 3);
f[0] = (float)d[0];
f[1] = (float)d[1];
f[2] = (float)d[2];
ChangeKey(mTargetPositionKeys, lcVector3(f[0], f[1], f[2]), 1, true);
file.ReadDoubles(d, 3);
f[0] = (float)d[0];
f[1] = (float)d[1];
f[2] = (float)d[2];
ChangeKey(mUpVectorKeys, lcVector3(f[0], f[1], f[2]), 1, true);
}
if (version == 3)
{
ch = file.ReadU8();
while (ch--)
{
lcuint8 step;
double eye[3], target[3], up[3];
float f[3];
file.ReadDoubles(eye, 3);
file.ReadDoubles(target, 3);
file.ReadDoubles(up, 3);
file.ReadU8(&step, 1);
if (up[0] == 0 && up[1] == 0 && up[2] == 0)
up[2] = 1;
f[0] = (float)eye[0];
f[1] = (float)eye[1];
f[2] = (float)eye[2];
ChangeKey(mPositionKeys, lcVector3(f[0], f[1], f[2]), step, true);
f[0] = (float)target[0];
f[1] = (float)target[1];
f[2] = (float)target[2];
ChangeKey(mTargetPositionKeys, lcVector3(f[0], f[1], f[2]), step, true);
f[0] = (float)up[0];
f[1] = (float)up[1];
f[2] = (float)up[2];
ChangeKey(mUpVectorKeys, lcVector3(f[0], f[1], f[2]), step, true);
file.ReadS32(); // snapshot
file.ReadS32(); // cam
}
}
if (version < 4)
{
m_fovy = (float)file.ReadDouble();
m_zFar = (float)file.ReadDouble();
m_zNear= (float)file.ReadDouble();
}
else
{
lcint32 n;
if (version < 6)
{
lcuint16 time;
float param[4];
lcuint8 type;
n = file.ReadS32();
while (n--)
{
file.ReadU16(&time, 1);
file.ReadFloats(param, 3);
file.ReadU8(&type, 1);
if (type == 0)
ChangeKey(mPositionKeys, lcVector3(param[0], param[1], param[2]), time, true);
else if (type == 1)
ChangeKey(mTargetPositionKeys, lcVector3(param[0], param[1], param[2]), time, true);
else if (type == 2)
ChangeKey(mUpVectorKeys, lcVector3(param[0], param[1], param[2]), time, true);
}
n = file.ReadS32();
while (n--)
{
file.ReadU16(&time, 1);
file.ReadFloats(param, 3);
file.ReadU8(&type, 1);
}
}
file.ReadFloats(&m_fovy, 1);
file.ReadFloats(&m_zFar, 1);
file.ReadFloats(&m_zNear, 1);
if (version < 5)
{
n = file.ReadS32();
if (n != 0)
mState |= LC_CAMERA_HIDDEN;
}
else
{
ch = file.ReadU8();
if (ch & 1)
mState |= LC_CAMERA_HIDDEN;
file.ReadU8();
}
}
if ((version > 1) && (version < 4))
{
lcuint32 show;
lcint32 user;
file.ReadU32(&show, 1);
// if (version > 2)
file.ReadS32(&user, 1);
if (show == 0)
mState |= LC_CAMERA_HIDDEN;
}
if (version < 7)
{
m_zFar *= 25.0f;
m_zNear *= 25.0f;
for (int KeyIdx = 0; KeyIdx < mPositionKeys.GetSize(); KeyIdx++)
mPositionKeys[KeyIdx].Value *= 25.0f;
for (int KeyIdx = 0; KeyIdx < mTargetPositionKeys.GetSize(); KeyIdx++)
mTargetPositionKeys[KeyIdx].Value *= 25.0f;
}
return true;
}
void lcCamera::CompareBoundingBox(float box[6])
{
const lcVector3 Points[2] =
{
mPosition, mTargetPosition
};
for (int i = 0; i < 2; i++)
{
const lcVector3& Point = Points[i];
if (Point[0] < box[0]) box[0] = Point[0];
if (Point[1] < box[1]) box[1] = Point[1];
if (Point[2] < box[2]) box[2] = Point[2];
if (Point[0] > box[3]) box[3] = Point[0];
if (Point[1] > box[4]) box[4] = Point[1];
if (Point[2] > box[5]) box[5] = Point[2];
}
}
void lcCamera::Move(lcStep Step, bool AddKey, const lcVector3& Distance)
{
if (IsSimple())
AddKey = false;
if (IsSelected(LC_CAMERA_SECTION_POSITION))
{
mPosition += Distance;
ChangeKey(mPositionKeys, mPosition, Step, AddKey);
}
if (IsSelected(LC_CAMERA_SECTION_TARGET))
{
mTargetPosition += Distance;
ChangeKey(mTargetPositionKeys, mTargetPosition, Step, AddKey);
}
else if (IsSelected(LC_CAMERA_SECTION_UPVECTOR))
{
mUpVector += Distance;
mUpVector.Normalize();
ChangeKey(mUpVectorKeys, mUpVector, Step, AddKey);
}
lcVector3 FrontVector(mTargetPosition - mPosition);
lcVector3 SideVector = lcCross(FrontVector, mUpVector);
if (fabsf(lcDot(mUpVector, SideVector)) > 0.99f)
SideVector = lcVector3(1, 0, 0);
mUpVector = lcCross(SideVector, FrontVector);
mUpVector.Normalize();
}
void lcCamera::UpdatePosition(lcStep Step)
{
if (!IsSimple())
{
mPosition = CalculateKey(mPositionKeys, Step);
mTargetPosition = CalculateKey(mTargetPositionKeys, Step);
mUpVector = CalculateKey(mUpVectorKeys, Step);
}
lcVector3 FrontVector(mPosition - mTargetPosition);
lcVector3 SideVector = lcCross(FrontVector, mUpVector);
mUpVector = lcNormalize(lcCross(SideVector, FrontVector));
mWorldView = lcMatrix44LookAt(mPosition, mTargetPosition, mUpVector);
}
void lcCamera::CopyPosition(const lcCamera* camera)
{
m_fovy = camera->m_fovy;
m_zNear = camera->m_zNear;
m_zFar = camera->m_zFar;
mWorldView = camera->mWorldView;
mPosition = camera->mPosition;
mTargetPosition = camera->mTargetPosition;
mUpVector = camera->mUpVector;
}
void lcCamera::DrawInterface(lcContext* Context, const lcMatrix44& ViewMatrix) const
{
float LineWidth = lcGetPreferences().mLineWidth;
lcMatrix44 ViewWorld = lcMatrix44AffineInverse(mWorldView);
lcVector3 UpVectorPosition = lcMul31(lcVector3(0, 1, 0), ViewWorld);
float PositionEdge = LC_CAMERA_POSITION_EDGE;
float PositionLens = LC_CAMERA_POSITION_EDGE * 2;
float TargetEdge = LC_CAMERA_TARGET_EDGE;
float Verts[34 + 24 + 4][3] =
{
{ PositionEdge, PositionEdge, PositionEdge }, { -PositionEdge, PositionEdge, PositionEdge },
{ -PositionEdge, PositionEdge, PositionEdge }, { -PositionEdge, -PositionEdge, PositionEdge },
{ -PositionEdge, -PositionEdge, PositionEdge }, { PositionEdge, -PositionEdge, PositionEdge },
{ PositionEdge, -PositionEdge, PositionEdge }, { PositionEdge, PositionEdge, PositionEdge },
{ PositionEdge, PositionEdge, -PositionEdge }, { -PositionEdge, PositionEdge, -PositionEdge },
{ -PositionEdge, PositionEdge, -PositionEdge }, { -PositionEdge, -PositionEdge, -PositionEdge },
{ -PositionEdge, -PositionEdge, -PositionEdge }, { PositionEdge, -PositionEdge, -PositionEdge },
{ PositionEdge, -PositionEdge, -PositionEdge }, { PositionEdge, PositionEdge, -PositionEdge },
{ PositionEdge, PositionEdge, PositionEdge }, { PositionEdge, PositionEdge, -PositionEdge },
{ -PositionEdge, PositionEdge, PositionEdge }, { -PositionEdge, PositionEdge, -PositionEdge },
{ -PositionEdge, -PositionEdge, PositionEdge }, { -PositionEdge, -PositionEdge, -PositionEdge },
{ PositionEdge, -PositionEdge, PositionEdge }, { PositionEdge, -PositionEdge, -PositionEdge },
{ -PositionEdge, -PositionEdge, -PositionLens }, { -PositionEdge, PositionEdge, -PositionLens },
{ 0.0f, 0.0f, -PositionEdge }, { -PositionEdge, -PositionEdge, -PositionLens },
{ PositionEdge, -PositionEdge, -PositionLens }, { 0.0f, 0.0f, -PositionEdge },
{ PositionEdge, PositionEdge, -PositionLens }, { PositionEdge, -PositionEdge, -PositionLens },
{ PositionEdge, PositionEdge, -PositionLens }, { -PositionEdge, PositionEdge, -PositionLens },
{ TargetEdge, TargetEdge, TargetEdge }, { -TargetEdge, TargetEdge, TargetEdge },
{ -TargetEdge, TargetEdge, TargetEdge }, { -TargetEdge, -TargetEdge, TargetEdge },
{ -TargetEdge, -TargetEdge, TargetEdge }, { TargetEdge, -TargetEdge, TargetEdge },
{ TargetEdge, -TargetEdge, TargetEdge }, { TargetEdge, TargetEdge, TargetEdge },
{ TargetEdge, TargetEdge, -TargetEdge }, { -TargetEdge, TargetEdge, -TargetEdge },
{ -TargetEdge, TargetEdge, -TargetEdge }, { -TargetEdge, -TargetEdge, -TargetEdge },
{ -TargetEdge, -TargetEdge, -TargetEdge }, { TargetEdge, -TargetEdge, -TargetEdge },
{ TargetEdge, -TargetEdge, -TargetEdge }, { TargetEdge, TargetEdge, -TargetEdge },
{ TargetEdge, TargetEdge, TargetEdge }, { TargetEdge, TargetEdge, -TargetEdge },
{ -TargetEdge, TargetEdge, TargetEdge }, { -TargetEdge, TargetEdge, -TargetEdge },
{ -TargetEdge, -TargetEdge, TargetEdge }, { -TargetEdge, -TargetEdge, -TargetEdge },
{ TargetEdge, -TargetEdge, TargetEdge }, { TargetEdge, -TargetEdge, -TargetEdge },
{ mPosition[0], mPosition[1], mPosition[2] },
{ mTargetPosition[0], mTargetPosition[1], mTargetPosition[2] },
{ mPosition[0], mPosition[1], mPosition[2] },
{ UpVectorPosition[0], UpVectorPosition[1], UpVectorPosition[2] },
};
Context->SetWorldViewMatrix(lcMul(ViewWorld, ViewMatrix));
if (IsSelected(LC_CAMERA_SECTION_POSITION))
{
Context->SetLineWidth(2.0f * LineWidth);
if (IsFocused(LC_CAMERA_SECTION_POSITION))
lcSetColorFocused();
else
lcSetColorSelected();
}
else
{
Context->SetLineWidth(LineWidth);
lcSetColorCamera();
}
glVertexPointer(3, GL_FLOAT, 0, Verts);
glDrawArrays(GL_LINES, 0, 24);
glDrawArrays(GL_LINE_STRIP, 24, 10);
lcMatrix44 TargetMat = ViewWorld;
TargetMat.SetTranslation(mTargetPosition);
Context->SetWorldViewMatrix(lcMul(TargetMat, ViewMatrix));
if (IsSelected(LC_CAMERA_SECTION_TARGET))
{
Context->SetLineWidth(2.0f * LineWidth);
if (IsFocused(LC_CAMERA_SECTION_TARGET))
lcSetColorFocused();
else
lcSetColorSelected();
}
else
{
Context->SetLineWidth(LineWidth);
lcSetColorCamera();
}
glDrawArrays(GL_LINES, 34, 24);
lcMatrix44 UpVectorMat = ViewWorld;
UpVectorMat.SetTranslation(UpVectorPosition);
Context->SetWorldViewMatrix(lcMul(UpVectorMat, ViewMatrix));
if (IsSelected(LC_CAMERA_SECTION_UPVECTOR))
{
Context->SetLineWidth(2.0f * LineWidth);
if (IsFocused(LC_CAMERA_SECTION_UPVECTOR))
lcSetColorFocused();
else
lcSetColorSelected();
}
else
{
Context->SetLineWidth(LineWidth);
lcSetColorCamera();
}
glDrawArrays(GL_LINES, 34, 24);
Context->SetWorldViewMatrix(ViewMatrix);
lcSetColorCamera();
Context->SetLineWidth(LineWidth);
glDrawArrays(GL_LINES, 34 + 24, 4);
if (IsSelected())
{
float Dist = lcLength(mTargetPosition - mPosition);
lcMatrix44 Projection = lcMatrix44Perspective(m_fovy, 1.33f, 0.01f, Dist);
Projection = lcMatrix44Inverse(Projection);
Context->SetWorldViewMatrix(lcMul(Projection, lcMul(ViewWorld, ViewMatrix)));
float ProjVerts[16][3] =
{
{ 1, 1, 1 }, { -1, 1, 1 },
{ -1, 1, 1 }, { -1, -1, 1 },
{ -1, -1, 1 }, { 1, -1, 1 },
{ 1, -1, 1 }, { 1, 1, 1 },
{ 1, 1, -1 }, { 1, 1, 1 },
{ -1, 1, -1 }, { -1, 1, 1 },
{ -1, -1, -1 }, { -1, -1, 1 },
{ 1, -1, -1 }, { 1, -1, 1 },
};
glVertexPointer(3, GL_FLOAT, 0, ProjVerts);
glDrawArrays(GL_LINES, 0, 16);
}
}
void lcCamera::RayTest(lcObjectRayTest& ObjectRayTest) const
{
lcVector3 Min = lcVector3(-LC_CAMERA_POSITION_EDGE, -LC_CAMERA_POSITION_EDGE, -LC_CAMERA_POSITION_EDGE);
lcVector3 Max = lcVector3(LC_CAMERA_POSITION_EDGE, LC_CAMERA_POSITION_EDGE, LC_CAMERA_POSITION_EDGE);
lcVector3 Start = lcMul31(ObjectRayTest.Start, mWorldView);
lcVector3 End = lcMul31(ObjectRayTest.End, mWorldView);
float Distance;
if (lcBoundingBoxRayIntersectDistance(Min, Max, Start, End, &Distance, NULL) && (Distance < ObjectRayTest.Distance))
{
ObjectRayTest.ObjectSection.Object = const_cast<lcCamera*>(this);
ObjectRayTest.ObjectSection.Section = LC_CAMERA_SECTION_POSITION;
ObjectRayTest.Distance = Distance;
}
Min = lcVector3(-LC_CAMERA_TARGET_EDGE, -LC_CAMERA_TARGET_EDGE, -LC_CAMERA_TARGET_EDGE);
Max = lcVector3(LC_CAMERA_TARGET_EDGE, LC_CAMERA_TARGET_EDGE, LC_CAMERA_TARGET_EDGE);
lcMatrix44 WorldView = mWorldView;
WorldView.SetTranslation(lcMul30(-mTargetPosition, WorldView));
Start = lcMul31(ObjectRayTest.Start, WorldView);
End = lcMul31(ObjectRayTest.End, WorldView);
if (lcBoundingBoxRayIntersectDistance(Min, Max, Start, End, &Distance, NULL) && (Distance < ObjectRayTest.Distance))
{
ObjectRayTest.ObjectSection.Object = const_cast<lcCamera*>(this);
ObjectRayTest.ObjectSection.Section = LC_CAMERA_SECTION_TARGET;
ObjectRayTest.Distance = Distance;
}
lcMatrix44 ViewWorld = lcMatrix44AffineInverse(mWorldView);
lcVector3 UpVectorPosition = lcMul31(lcVector3(0, 1, 0), ViewWorld);
WorldView = mWorldView;
WorldView.SetTranslation(lcMul30(-UpVectorPosition, WorldView));
Start = lcMul31(ObjectRayTest.Start, WorldView);
End = lcMul31(ObjectRayTest.End, WorldView);
if (lcBoundingBoxRayIntersectDistance(Min, Max, Start, End, &Distance, NULL) && (Distance < ObjectRayTest.Distance))
{
ObjectRayTest.ObjectSection.Object = const_cast<lcCamera*>(this);
ObjectRayTest.ObjectSection.Section = LC_CAMERA_SECTION_UPVECTOR;
ObjectRayTest.Distance = Distance;
}
}
void lcCamera::BoxTest(lcObjectBoxTest& ObjectBoxTest) const
{
lcVector3 Min(-LC_CAMERA_POSITION_EDGE, -LC_CAMERA_POSITION_EDGE, -LC_CAMERA_POSITION_EDGE);
lcVector3 Max(LC_CAMERA_POSITION_EDGE, LC_CAMERA_POSITION_EDGE, LC_CAMERA_POSITION_EDGE);
lcVector4 LocalPlanes[6];
for (int PlaneIdx = 0; PlaneIdx < 6; PlaneIdx++)
{
lcVector3 Normal = lcMul30(ObjectBoxTest.Planes[PlaneIdx], mWorldView);
LocalPlanes[PlaneIdx] = lcVector4(Normal, ObjectBoxTest.Planes[PlaneIdx][3] - lcDot3(mWorldView[3], Normal));
}
if (lcBoundingBoxIntersectsVolume(Min, Max, LocalPlanes))
{
ObjectBoxTest.Objects.Add(const_cast<lcCamera*>(this));
return;
}
Min = lcVector3(-LC_CAMERA_TARGET_EDGE, -LC_CAMERA_TARGET_EDGE, -LC_CAMERA_TARGET_EDGE);
Max = lcVector3(LC_CAMERA_TARGET_EDGE, LC_CAMERA_TARGET_EDGE, LC_CAMERA_TARGET_EDGE);
lcMatrix44 WorldView = mWorldView;
WorldView.SetTranslation(lcMul30(-mTargetPosition, WorldView));
for (int PlaneIdx = 0; PlaneIdx < 6; PlaneIdx++)
{
lcVector3 Normal = lcMul30(ObjectBoxTest.Planes[PlaneIdx], WorldView);
LocalPlanes[PlaneIdx] = lcVector4(Normal, ObjectBoxTest.Planes[PlaneIdx][3] - lcDot3(WorldView[3], Normal));
}
if (lcBoundingBoxIntersectsVolume(Min, Max, LocalPlanes))
{
ObjectBoxTest.Objects.Add(const_cast<lcCamera*>(this));
return;
}
lcMatrix44 ViewWorld = lcMatrix44AffineInverse(mWorldView);
lcVector3 UpVectorPosition = lcMul31(lcVector3(0, 1, 0), ViewWorld);
WorldView = mWorldView;
WorldView.SetTranslation(lcMul30(-UpVectorPosition, WorldView));
for (int PlaneIdx = 0; PlaneIdx < 6; PlaneIdx++)
{
lcVector3 Normal = lcMul30(ObjectBoxTest.Planes[PlaneIdx], WorldView);
LocalPlanes[PlaneIdx] = lcVector4(Normal, ObjectBoxTest.Planes[PlaneIdx][3] - lcDot3(WorldView[3], Normal));
}
if (lcBoundingBoxIntersectsVolume(Min, Max, LocalPlanes))
{
ObjectBoxTest.Objects.Add(const_cast<lcCamera*>(this));
return;
}
}
void lcCamera::InsertTime(lcStep Start, lcStep Time)
{
lcObject::InsertTime(mPositionKeys, Start, Time);
lcObject::InsertTime(mTargetPositionKeys, Start, Time);
lcObject::InsertTime(mUpVectorKeys, Start, Time);
}
void lcCamera::RemoveTime(lcStep Start, lcStep Time)
{
lcObject::RemoveTime(mPositionKeys, Start, Time);
lcObject::RemoveTime(mTargetPositionKeys, Start, Time);
lcObject::RemoveTime(mUpVectorKeys, Start, Time);
}
void lcCamera::ZoomExtents(float AspectRatio, const lcVector3& Center, const lcVector3* Points, int NumPoints, lcStep Step, bool AddKey)
{
if (IsOrtho())
{
float MinX = FLT_MAX, MaxX = -FLT_MAX, MinY = FLT_MAX, MaxY = -FLT_MAX;
for (int PointIdx = 0; PointIdx < NumPoints; PointIdx++)
{
lcVector3 Point = lcMul30(Points[PointIdx], mWorldView);
MinX = lcMin(MinX, Point.x);
MinY = lcMin(MinY, Point.y);
MaxX = lcMax(MaxX, Point.x);
MaxY = lcMax(MaxY, Point.y);
}
float Width = MaxX - MinX;
float Height = MaxY - MinY;
if (Width > Height * AspectRatio)
Height = Width / AspectRatio;
float f = Height / (m_fovy * (LC_PI / 180.0f));
lcVector3 FrontVector(mTargetPosition - mPosition);
mPosition = Center - lcNormalize(FrontVector) * f;
mTargetPosition = Center;
}
else
{
lcVector3 Position(mPosition + Center - mTargetPosition);
lcMatrix44 ProjectionMatrix = lcMatrix44Perspective(m_fovy, AspectRatio, m_zNear, m_zFar);
mPosition = lcZoomExtents(Position, mWorldView, ProjectionMatrix, Points, NumPoints);
mTargetPosition = Center;
}
if (IsSimple())
AddKey = false;
ChangeKey(mPositionKeys, mPosition, Step, AddKey);
ChangeKey(mTargetPositionKeys, mTargetPosition, Step, AddKey);
UpdatePosition(Step);
}
void lcCamera::ZoomRegion(float AspectRatio, const lcVector3& Position, const lcVector3& TargetPosition, const lcVector3* Corners, lcStep Step, bool AddKey)
{
if (IsOrtho())
{
float MinX = FLT_MAX, MaxX = -FLT_MAX, MinY = FLT_MAX, MaxY = -FLT_MAX;
for (int PointIdx = 0; PointIdx < 2; PointIdx++)
{
lcVector3 Point = lcMul30(Corners[PointIdx], mWorldView);
MinX = lcMin(MinX, Point.x);
MinY = lcMin(MinY, Point.y);
MaxX = lcMax(MaxX, Point.x);
MaxY = lcMax(MaxY, Point.y);
}
float Width = MaxX - MinX;
float Height = MaxY - MinY;
if (Width > Height * AspectRatio)
Height = Width / AspectRatio;
float f = Height / (m_fovy * (LC_PI / 180.0f));
lcVector3 FrontVector(mTargetPosition - mPosition);
mPosition = TargetPosition - lcNormalize(FrontVector) * f;
mTargetPosition = TargetPosition;
}
else
{
lcMatrix44 WorldView = lcMatrix44LookAt(Position, TargetPosition, mUpVector);
lcMatrix44 ProjectionMatrix = lcMatrix44Perspective(m_fovy, AspectRatio, m_zNear, m_zFar);
mPosition = lcZoomExtents(Position, WorldView, ProjectionMatrix, Corners, 2);
mTargetPosition = TargetPosition;
}
if (IsSimple())
AddKey = false;
ChangeKey(mPositionKeys, mPosition, Step, AddKey);
ChangeKey(mTargetPositionKeys, mTargetPosition, Step, AddKey);
UpdatePosition(Step);
}
void lcCamera::Zoom(float Distance, lcStep Step, bool AddKey)
{
lcVector3 FrontVector(mPosition - mTargetPosition);
FrontVector.Normalize();
FrontVector *= -5.0f * Distance;
// Don't zoom ortho in if it would cross the ortho focal plane.
if (IsOrtho())
{
if ((Distance > 0) && (lcDot(mPosition + FrontVector - mTargetPosition, mPosition - mTargetPosition) <= 0))
return;
mPosition += FrontVector;
}
else
{
mPosition += FrontVector;
mTargetPosition += FrontVector;
}
if (IsSimple())
AddKey = false;
ChangeKey(mPositionKeys, mPosition, Step, AddKey);
ChangeKey(mTargetPositionKeys, mTargetPosition, Step, AddKey);
UpdatePosition(Step);
}
void lcCamera::Pan(const lcVector3& Distance, lcStep Step, bool AddKey)
{
mPosition += Distance;
mTargetPosition += Distance;
if (IsSimple())
AddKey = false;
ChangeKey(mPositionKeys, mPosition, Step, AddKey);
ChangeKey(mTargetPositionKeys, mTargetPosition, Step, AddKey);
UpdatePosition(Step);
}
void lcCamera::Orbit(float DistanceX, float DistanceY, const lcVector3& CenterPosition, lcStep Step, bool AddKey)
{
lcVector3 FrontVector(mPosition - mTargetPosition);
lcVector3 Z(lcNormalize(lcVector3(FrontVector[0], FrontVector[1], 0)));
if (isnan(Z[0]) || isnan(Z[1]))
Z = lcNormalize(lcVector3(mUpVector[0], mUpVector[1], 0));
if (mUpVector[2] < 0)
{
Z[0] = -Z[0];
Z[1] = -Z[1];
}
lcMatrix44 YRot(lcVector4(Z[0], Z[1], 0.0f, 0.0f), lcVector4(-Z[1], Z[0], 0.0f, 0.0f), lcVector4(0.0f, 0.0f, 1.0f, 0.0f), lcVector4(0.0f, 0.0f, 0.0f, 1.0f));
lcMatrix44 transform = lcMul(lcMul(lcMul(lcMatrix44AffineInverse(YRot), lcMatrix44RotationY(DistanceY)), YRot), lcMatrix44RotationZ(-DistanceX));
mPosition = lcMul31(mPosition - CenterPosition, transform) + CenterPosition;
mTargetPosition = lcMul31(mTargetPosition - CenterPosition, transform) + CenterPosition;
mUpVector = lcMul31(mUpVector, transform);
if (IsSimple())
AddKey = false;
ChangeKey(mPositionKeys, mPosition, Step, AddKey);
ChangeKey(mTargetPositionKeys, mTargetPosition, Step, AddKey);
ChangeKey(mUpVectorKeys, mUpVector, Step, AddKey);
UpdatePosition(Step);
}
void lcCamera::Roll(float Distance, lcStep Step, bool AddKey)
{
lcVector3 FrontVector(mPosition - mTargetPosition);
lcMatrix44 Rotation = lcMatrix44FromAxisAngle(FrontVector, Distance);
mUpVector = lcMul30(mUpVector, Rotation);
if (IsSimple())
AddKey = false;
ChangeKey(mUpVectorKeys, mUpVector, Step, AddKey);
UpdatePosition(Step);
}
void lcCamera::Center(lcVector3& point, lcStep Step, bool AddKey)
{
lcAlign(mTargetPosition, mPosition, point);
if (IsSimple())
AddKey = false;
ChangeKey(mPositionKeys, mPosition, Step, AddKey);
ChangeKey(mTargetPositionKeys, mTargetPosition, Step, AddKey);
UpdatePosition(Step);
}
void lcCamera::SetViewpoint(lcViewpoint Viewpoint)
{
lcVector3 Positions[] =
{
lcVector3( 0.0f, -1250.0f, 0.0f), // LC_VIEWPOINT_FRONT
lcVector3( 0.0f, 1250.0f, 0.0f), // LC_VIEWPOINT_BACK
lcVector3( 0.0f, 0.0f, 1250.0f), // LC_VIEWPOINT_TOP
lcVector3( 0.0f, 0.0f, -1250.0f), // LC_VIEWPOINT_BOTTOM
lcVector3( 1250.0f, 0.0f, 0.0f), // LC_VIEWPOINT_LEFT
lcVector3(-1250.0f, 0.0f, 0.0f), // LC_VIEWPOINT_RIGHT
lcVector3( -375.0f, -375.0f, 187.5f) // LC_VIEWPOINT_HOME
};
lcVector3 Ups[] =
{
lcVector3( 0.0f, 0.0f, 1.0f),
lcVector3( 0.0f, 0.0f, 1.0f),
lcVector3( 0.0f, 1.0f, 0.0f),
lcVector3( 0.0f,-1.0f, 0.0f),
lcVector3( 0.0f, 0.0f, 1.0f),
lcVector3( 0.0f, 0.0f, 1.0f),
lcVector3(-0.2357f, -0.2357f, 0.94281f)
};
mPosition = Positions[Viewpoint];
mTargetPosition = lcVector3(0, 0, 0);
mUpVector = Ups[Viewpoint];
ChangeKey(mPositionKeys, mPosition, 1, false);
ChangeKey(mTargetPositionKeys, mTargetPosition, 1, false);
ChangeKey(mUpVectorKeys, mUpVector, 1, false);
UpdatePosition(1);
}
void lcCamera::StartTiledRendering(int tw, int th, int iw, int ih, float AspectRatio)
{
m_pTR = new TiledRender();
m_pTR->TileSize(tw, th, 0);
m_pTR->ImageSize(iw, ih);
if (IsOrtho())
{
float OrthoHeight = GetOrthoHeight() / 2.0f;
float OrthoWidth = OrthoHeight * AspectRatio;
m_pTR->Ortho(-OrthoWidth, OrthoWidth, -OrthoHeight, OrthoHeight, m_zNear, m_zFar * 4);
}
else
m_pTR->Perspective(m_fovy, AspectRatio, m_zNear, m_zFar);
}
void lcCamera::GetTileInfo(int* row, int* col, int* width, int* height)
{
if (m_pTR != NULL)
{
*row = m_pTR->m_Rows - m_pTR->m_CurrentRow - 1;
*col = m_pTR->m_CurrentColumn;
*width = m_pTR->m_CurrentTileWidth;
*height = m_pTR->m_CurrentTileHeight;
}
}
bool lcCamera::EndTile()
{
if (m_pTR != NULL)
{
if (m_pTR->EndTile())
return true;
delete m_pTR;
m_pTR = NULL;
}
return false;
}
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