Files
create/src/Mod/CAM/PathSimulator/AppGL/MillPathSegment.cpp
2024-05-23 10:12:13 +02:00

230 lines
8.0 KiB
C++

/***************************************************************************
* Copyright (c) 2024 Shai Seger <shaise at gmail> *
* *
* This file is part of the FreeCAD CAx development system. *
* *
* This library is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Library General Public *
* License as published by the Free Software Foundation; either *
* version 2 of the License, or (at your option) any later version. *
* *
* This library is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU Library General Public License for more details. *
* *
* You should have received a copy of the GNU Library General Public *
* License along with this library; see the file COPYING.LIB. If not, *
* write to the Free Software Foundation, Inc., 59 Temple Place, *
* Suite 330, Boston, MA 02111-1307, USA *
* *
***************************************************************************/
#include "OpenGlWrapper.h"
#include "MillPathSegment.h"
#include "SimShapes.h"
#include "linmath.h"
#include "GlUtils.h"
#include <iostream>
#define N_MILL_SLICES 8
#define MAX_SEG_DEG (PI / 2.0f) // 90 deg
#define NIN_SEG_DEG (PI / 90.0f) // 2 deg
#define SWEEP_ARC_PAD 1.05f
#define PX 0
#define PY 1
#define PZ 2
namespace MillSim
{
bool IsVerticalMotion(MillMotion* m1, MillMotion* m2)
{
return (m1->z != m2->z && EQ_FLOAT(m1->x, m2->x) && EQ_FLOAT(m1->y, m2->y));
}
bool IsArcMotion(MillMotion* m)
{
if (m->cmd != eRotateCCW && m->cmd != eRotateCW) {
return false;
}
return fabs(m->i > EPSILON) || fabs(m->j) > EPSILON;
}
float MillPathSegment::mResolution = 1;
float MillPathSegment::mSmallRadStep = (PI / 8);
MillPathSegment::MillPathSegment(EndMill* _endmill, MillMotion* from, MillMotion* to)
: mShearMat {{1.0F, 0.0F, 0.0F, 0.0F},
{0.0F, 1.0F, 0.0F, 0.0F},
{0.0F, 0.0F, 1.0F, 0.0F},
{0.0F, 0.0F, 0.0F, 1.0F}}
{
MotionPosToVec(mStartPos, from);
MotionPosToVec(mDiff, to);
vec3_sub(mDiff, mDiff, mStartPos);
mXYDistance = sqrtf(mDiff[PX] * mDiff[PX] + mDiff[PY] * mDiff[PY]);
mZDistance = fabsf(mDiff[PY]);
mXYZDistance = sqrtf(mXYDistance * mXYDistance + mDiff[PZ] * mDiff[PZ]);
mXYAngle = atan2f(mDiff[PY], mDiff[PX]);
endmill = _endmill;
mStartAngRad = mStepAngRad = 0;
if (IsArcMotion(to)) {
mMotionType = MTCurved;
mRadius = sqrtf(to->j * to->j + to->i * to->i);
mSmallRad = mRadius <= endmill->radius;
if (mSmallRad) {
mStepAngRad = mSmallRadStep;
}
else {
mStepAngRad = asinf(mResolution / mRadius);
if (mStepAngRad > MAX_SEG_DEG) {
mStepAngRad = MAX_SEG_DEG;
}
else if (mStepAngRad < NIN_SEG_DEG) {
mStepAngRad = NIN_SEG_DEG;
}
}
MotionPosToVec(mCenter, from);
mCenter[PX] += to->i;
mCenter[PY] += to->j;
mArcDir = to->cmd == eRotateCCW ? -1.f : 1.f;
mStartAngRad = atan2f(mCenter[PX] - from->x, from->y - mCenter[PY]);
float endAng = atan2f(mCenter[PX] - to->x, to->y - mCenter[PY]);
mSweepAng = (mStartAngRad - endAng) * mArcDir;
if (mSweepAng < EPSILON) {
mSweepAng += PI * 2;
}
numSimSteps = (int)(mSweepAng / mStepAngRad) + 1;
mStepAngRad = mArcDir * mSweepAng / numSimSteps;
if (mSmallRad) {
// when the radius is too small, we just use the tool itself to carve the stock
mShape = endmill->toolShape;
}
else {
endmill->GenerateArcSegmentDL(mRadius,
mStepAngRad * SWEEP_ARC_PAD,
mDiff[PZ] / numSimSteps,
&mShape);
numSimSteps++;
}
isMultyPart = true;
}
else {
numSimSteps = (int)(mXYZDistance / mResolution);
if (numSimSteps == 0) {
numSimSteps = 1;
}
isMultyPart = false;
mStepDistance = mXYDistance / numSimSteps;
mStepLength[PX] = mDiff[PX];
mStepLength[PY] = mDiff[PY];
mStepLength[PZ] = mDiff[PZ];
vec3_scale(mStepLength, mStepLength, 1.f / (float)numSimSteps);
if (IsVerticalMotion(from, to)) {
mMotionType = MTVertical;
}
else {
mMotionType = MTHorizontal;
mShearMat[0][2] = mDiff[PZ] / mXYDistance;
}
}
}
MillPathSegment::~MillPathSegment()
{
mShape.FreeResources();
}
void MillPathSegment::render(int step)
{
mStepNumber = step;
mat4x4 mat, mat2, rmat;
mat4x4_identity(mat);
mat4x4_identity(rmat);
if (mMotionType == MTCurved) {
mat4x4_translate_in_place(mat,
mCenter[PX],
mCenter[PY],
mCenter[PZ] + mDiff[PZ] * (step - 1) / numSimSteps);
mat4x4_rotate_Z(mat, mat, mStartAngRad - (step - 1) * mStepAngRad);
mat4x4_rotate_Z(rmat, rmat, mStartAngRad - (step - 1) * mStepAngRad);
if (mSmallRad || step == numSimSteps) {
mat4x4_translate_in_place(mat, 0, mRadius, 0);
endmill->toolShape.Render(mat, rmat);
}
else {
mShape.Render(mat, rmat);
}
}
else {
if (mMotionType == MTVertical) {
if (mStepLength[PZ] > 0) {
mat4x4_translate_in_place_v(mat, mStartPos);
}
else {
mat4x4_translate_in_place(mat,
mStartPos[PX],
mStartPos[PY],
mStartPos[PZ] + mStepNumber * mStepLength[PZ]);
}
endmill->toolShape.Render(mat, rmat);
}
else {
float renderDist = step * mStepDistance;
mat4x4_translate_in_place_v(mat, mStartPos);
mat4x4_rotate_Z(mat, mat, mXYAngle);
mat4x4_rotate_Z(rmat, rmat, mXYAngle);
mat4x4_dup(mat2, mat);
if (mDiff[PZ] != 0.0) {
mat4x4_mul(mat2, mat2, mShearMat);
}
mat4x4_scale_aniso(mat2, mat2, renderDist, 1, 1);
endmill->pathShape.Render(mat2, rmat);
mat4x4_translate_in_place(mat, renderDist, 0, mDiff[PZ]);
endmill->halfToolShape.Render(mat, rmat);
}
}
}
void MillPathSegment::GetHeadPosition(vec3 headPos)
{
if (mMotionType == MTCurved) {
float angRad = mStartAngRad - mStepNumber * mStepAngRad;
vec3_set(mHeadPos, -mRadius * sinf(angRad), mRadius * cosf(angRad), 0);
vec3_add(mHeadPos, mHeadPos, mCenter);
}
else {
vec3_dup(mHeadPos, mStepLength);
vec3_scale(mHeadPos, mHeadPos, (float)mStepNumber);
vec3_add(mHeadPos, mHeadPos, mStartPos);
}
vec3_dup(headPos, mHeadPos);
}
float MillPathSegment::SetQuality(float quality, float maxStockDimension)
{
mResolution = maxStockDimension * 0.05 / quality;
if (mResolution > 4) {
mResolution = 4;
}
if (mResolution < 0.5) {
mResolution = 0.5;
}
mSmallRadStep = PI / 8;
if (quality < 4) {
mSmallRadStep = PI / 2;
}
else if (quality < 8) {
mSmallRadStep = PI / 4;
}
return mResolution;
}
} // namespace MillSim