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Create a static vertex buffer for the view sphere.

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Leonardo Zide 2018-11-03 17:54:32 -07:00
parent 8f04ccbec7
commit a10d1c1727
3 changed files with 94 additions and 87 deletions
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156
common/lc_viewsphere.cpp
View file

@ -8,9 +8,10 @@
#include "lc_texture.h"
lcTexture* lcViewSphere::mTexture;
//todo: move these
const float BoxSize = 10.0f;
lcVertexBuffer lcViewSphere::mVertexBuffer;
lcIndexBuffer lcViewSphere::mIndexBuffer;
const float lcViewSphere::mRadius = 1.0f;
const int lcViewSphere::mSubdivisions = 7;
lcViewSphere::lcViewSphere(View* View)
: mView(View)
@ -27,10 +28,10 @@ lcMatrix44 lcViewSphere::GetViewMatrix() const
lcMatrix44 lcViewSphere::GetProjectionMatrix() const
{
return lcMatrix44Ortho(-BoxSize * 2, BoxSize * 2, -BoxSize * 2, BoxSize * 2, -50, 50);
return lcMatrix44Ortho(-mRadius * 1.25f, mRadius * 1.25f, -mRadius * 1.25f, mRadius * 1.25f, -mRadius * 1.25f, mRadius * 1.25f);
}
void lcViewSphere::CreateResources()
void lcViewSphere::CreateResources(lcContext* Context)
{
const int ImageSize = 128;
mTexture = new lcTexture();
@ -82,17 +83,74 @@ void lcViewSphere::CreateResources()
}
mTexture->SetImage(std::move(Images), LC_TEXTURE_CUBEMAP | LC_TEXTURE_LINEAR);
lcVector3 Verts[(mSubdivisions + 1) * (mSubdivisions + 1) * 6];
GLushort Indices[mSubdivisions * mSubdivisions * 6 * 6];
lcMatrix44 Transforms[6] =
{
lcMatrix44(lcVector4(0.0f, 1.0f, 0.0f, 0.0f), lcVector4(0.0f, 0.0f, 1.0f, 0.0f), lcVector4(1.0f, 0.0f, 0.0f, 0.0f), lcVector4(1.0f, 0.0f, 0.0f, 1.0f)),
lcMatrix44(lcVector4(0.0f, -1.0f, 0.0f, 0.0f), lcVector4(0.0f, 0.0f, 1.0f, 0.0f), lcVector4(1.0f, 0.0f, 0.0f, 0.0f), lcVector4(-1.0f, 0.0f, 0.0f, 1.0f)),
lcMatrix44(lcVector4(-1.0f, 0.0f, 0.0f, 0.0f), lcVector4(0.0f, 0.0f, 1.0f, 0.0f), lcVector4(0.0f, 1.0f, 0.0f, 0.0f), lcVector4(0.0f, 1.0f, 0.0f, 1.0f)),
lcMatrix44(lcVector4(1.0f, 0.0f, 0.0f, 0.0f), lcVector4(0.0f, 0.0f, 1.0f, 0.0f), lcVector4(0.0f, 1.0f, 0.0f, 0.0f), lcVector4(0.0f, -1.0f, 0.0f, 1.0f)),
lcMatrix44(lcVector4(1.0f, 0.0f, 0.0f, 0.0f), lcVector4(0.0f, 1.0f, 0.0f, 0.0f), lcVector4(0.0f, 0.0f, 1.0f, 0.0f), lcVector4(0.0f, 0.0f, 1.0f, 1.0f)),
lcMatrix44(lcVector4(1.0f, 0.0f, 0.0f, 0.0f), lcVector4(0.0f, -1.0f, 0.0f, 0.0f), lcVector4(0.0f, 0.0f, 1.0f, 0.0f), lcVector4(0.0f, 0.0f, -1.0f, 1.0f)),
};
const float Step = 2.0f / mSubdivisions;
lcVector3* CurVert = Verts;
for (int FaceIdx = 0; FaceIdx < 6; FaceIdx++)
{
for (int y = 0; y <= mSubdivisions; y++)
{
for (int x = 0; x <= mSubdivisions; x++)
{
lcVector3 Vert = lcMul31(lcVector3(Step * x - 1.0f, Step * y - 1.0f, 0.0f), Transforms[FaceIdx]);
lcVector3 Vert2 = Vert * Vert;
*CurVert++ = lcVector3(Vert.x * std::sqrt(1.0 - 0.5 * (Vert2.y + Vert2.z) + Vert2.y * Vert2.z / 3.0),
Vert.y * std::sqrt(1.0 - 0.5 * (Vert2.z + Vert2.x) + Vert2.z * Vert2.x / 3.0),
Vert.z * std::sqrt(1.0 - 0.5 * (Vert2.x + Vert2.y) + Vert2.x * Vert2.y / 3.0)
) * mRadius;
}
}
}
GLushort* CurIndex = Indices;
for (int FaceIdx = 0; FaceIdx < 6; FaceIdx++)
{
const int FaceBase = FaceIdx * (mSubdivisions + 1) * (mSubdivisions + 1);
for (int y = 0; y < mSubdivisions; y++)
{
int RowBase = FaceBase + (mSubdivisions + 1) * y;
for (int x = 0; x < mSubdivisions; x++)
{
*CurIndex++ = RowBase + x;
*CurIndex++ = RowBase + x + 1;
*CurIndex++ = RowBase + x + (mSubdivisions + 1);
*CurIndex++ = RowBase + x + 1;
*CurIndex++ = RowBase + x + 1 + (mSubdivisions + 1);
*CurIndex++ = RowBase + x + (mSubdivisions + 1);
}
}
}
mVertexBuffer = Context->CreateVertexBuffer(sizeof(Verts), Verts);
mIndexBuffer = Context->CreateIndexBuffer(sizeof(Indices), Indices);
}
void lcViewSphere::DestroyResources()
void lcViewSphere::DestroyResources(lcContext* Context)
{
delete mTexture;
mTexture = nullptr;
Context->DestroyVertexBuffer(mVertexBuffer);
Context->DestroyIndexBuffer(mIndexBuffer);
}
const int Subdivisions = 9;
lcVector3 Verts[(Subdivisions + 1) * (Subdivisions + 1) * 6];
const int NumIndices = Subdivisions * Subdivisions * 6 * 6;
GLushort Indices[NumIndices];
void lcViewSphere::Draw()
{
@ -121,80 +179,24 @@ void lcViewSphere::Draw()
glDepthFunc(GL_ALWAYS);
glEnable(GL_CULL_FACE);
{
lcMatrix44 Transforms[6] =
{
lcMatrix44(lcVector4( 0.0f, 1.0f, 0.0f, 0.0f), lcVector4(0.0f, 0.0f, 1.0f, 0.0f), lcVector4(1.0f, 0.0f, 0.0f, 0.0f), lcVector4( 1.0f, 0.0f, 0.0f, 1.0f)),
lcMatrix44(lcVector4( 0.0f, -1.0f, 0.0f, 0.0f), lcVector4(0.0f, 0.0f, 1.0f, 0.0f), lcVector4(1.0f, 0.0f, 0.0f, 0.0f), lcVector4(-1.0f, 0.0f, 0.0f, 1.0f)),
lcMatrix44(lcVector4(-1.0f, 0.0f, 0.0f, 0.0f), lcVector4(0.0f, 0.0f, 1.0f, 0.0f), lcVector4(0.0f, 1.0f, 0.0f, 0.0f), lcVector4( 0.0f, 1.0f, 0.0f, 1.0f)),
lcMatrix44(lcVector4( 1.0f, 0.0f, 0.0f, 0.0f), lcVector4(0.0f, 0.0f, 1.0f, 0.0f), lcVector4(0.0f, 1.0f, 0.0f, 0.0f), lcVector4( 0.0f, -1.0f, 0.0f, 1.0f)),
lcMatrix44(lcVector4( 1.0f, 0.0f, 0.0f, 0.0f), lcVector4(0.0f, 1.0f, 0.0f, 0.0f), lcVector4(0.0f, 0.0f, 1.0f, 0.0f), lcVector4( 0.0f, 0.0f, 1.0f, 1.0f)),
lcMatrix44(lcVector4( 1.0f, 0.0f, 0.0f, 0.0f), lcVector4(0.0f, -1.0f, 0.0f, 0.0f), lcVector4(0.0f, 0.0f, 1.0f, 0.0f), lcVector4( 0.0f, 0.0f, -1.0f, 1.0f)),
};
const float Step = 2.0f / Subdivisions;
lcVector3* CurVert = Verts;
for (int FaceIdx = 0; FaceIdx < 6; FaceIdx++)
{
for (int y = 0; y <= Subdivisions; y++)
{
for (int x = 0; x <= Subdivisions; x++)
{
lcVector3 Vert = lcMul31(lcVector3(Step * x - 1.0f, Step * y - 1.0f, 0.0f), Transforms[FaceIdx]);
lcVector3 Vert2 = Vert * Vert;
*CurVert++ = lcVector3(Vert.x * std::sqrt(1.0 - 0.5 * (Vert2.y + Vert2.z) + Vert2.y * Vert2.z / 3.0),
Vert.y * std::sqrt(1.0 - 0.5 * (Vert2.z + Vert2.x) + Vert2.z * Vert2.x / 3.0),
Vert.z * std::sqrt(1.0 - 0.5 * (Vert2.x + Vert2.y) + Vert2.x * Vert2.y / 3.0)
) * BoxSize;
}
}
}
GLushort* CurIndex = Indices;
for (int FaceIdx = 0; FaceIdx < 6; FaceIdx++)
{
const int FaceBase = FaceIdx * (Subdivisions + 1) * (Subdivisions + 1);
for (int y = 0; y < Subdivisions; y++)
{
int RowBase = FaceBase + (Subdivisions + 1) * y;
for (int x = 0; x < Subdivisions; x++)
{
*CurIndex++ = RowBase + x;
*CurIndex++ = RowBase + x + 1;
*CurIndex++ = RowBase + x + (Subdivisions + 1);
*CurIndex++ = RowBase + x + 1;
*CurIndex++ = RowBase + x + 1 + (Subdivisions + 1);
*CurIndex++ = RowBase + x + (Subdivisions + 1);
}
}
}
Context->SetVertexBufferPointer(Verts);
Context->SetVertexBuffer(mVertexBuffer);
Context->SetVertexFormatPosition(3);
Context->SetIndexBufferPointer(Indices);
Context->SetIndexBuffer(mIndexBuffer);
Context->SetColor(1.0f, 1.0f, 1.0f, 1.0f);
Context->SetHighlightColor(lcVector4(0.0f, 0.0f, 0.0f, 1.0f));
Context->DrawIndexedPrimitives(GL_TRIANGLES, NumIndices, GL_UNSIGNED_SHORT, 0);
Context->DrawIndexedPrimitives(GL_TRIANGLES, mSubdivisions * mSubdivisions * 6 * 6, GL_UNSIGNED_SHORT, 0);
int IntersectionType = mIntersectionFlags.count();
if (IntersectionType == 1)
if (mIntersectionFlags.any())
{
Context->SetHighlightColor(lcVector4(1.0, 0, 0, 1.0));
for (int FlagIdx = 0; FlagIdx < 6; FlagIdx++)
{
if (mIntersectionFlags.test(FlagIdx))
{
int FaceBase = FlagIdx * (Subdivisions) * (Subdivisions) * 6;
Context->SetHighlightColor(lcVector4(1.0, 0, 0, 1.0));
Context->DrawIndexedPrimitives(GL_TRIANGLES, Subdivisions * Subdivisions * 6, GL_UNSIGNED_SHORT, FaceBase * sizeof(GLushort));
break;
}
int FaceBase = FlagIdx * (mSubdivisions) * (mSubdivisions) * 6;
Context->DrawIndexedPrimitives(GL_TRIANGLES, mSubdivisions * mSubdivisions * 6, GL_UNSIGNED_SHORT, FaceBase * sizeof(GLushort));
}
}
}
@ -309,11 +311,11 @@ std::bitset<6> lcViewSphere::GetIntersectionFlags(lcVector3& Intersection) const
lcUnprojectPoints(StartEnd, 2, GetViewMatrix(), GetProjectionMatrix(), Viewport);
float Distance;
if (lcSphereRayMinIntersectDistance(lcVector3(0.0f, 0.0f, 0.0f), BoxSize, StartEnd[0], StartEnd[1], &Distance))
if (lcSphereRayMinIntersectDistance(lcVector3(0.0f, 0.0f, 0.0f), mRadius, StartEnd[0], StartEnd[1], &Distance))
{
Intersection = (StartEnd[0] + (StartEnd[1] - StartEnd[0]) * Distance) / BoxSize;
Intersection = (StartEnd[0] + (StartEnd[1] - StartEnd[0]) * Distance) / mRadius;
const float Side = 0.6f;
const float Side = 0.5f;
for (int AxisIdx = 0; AxisIdx < 3; AxisIdx++)
{

9
common/lc_viewsphere.h
View file

@ -1,6 +1,7 @@
#pragma once
#include "lc_math.h"
#include "lc_context.h"
#include <bitset>
class View;
@ -16,8 +17,8 @@ public:
bool OnLeftButtonDown();
bool IsDragging() const;
static void CreateResources();
static void DestroyResources();
static void CreateResources(lcContext* Context);
static void DestroyResources(lcContext* Context);
protected:
lcMatrix44 GetViewMatrix() const;
@ -32,4 +33,8 @@ protected:
bool mMouseDown;
static lcTexture* mTexture;
static lcVertexBuffer mVertexBuffer;
static lcIndexBuffer mIndexBuffer;
static const float mRadius;
static const int mSubdivisions;
};

4
qt/lc_qglwidget.cpp
View file

@ -103,7 +103,7 @@ lcQGLWidget::lcQGLWidget(QWidget *parent, lcGLWidget *owner, bool view)
lcInitializeGLExtensions(context());
lcContext::CreateResources();
View::CreateResources(widget->mContext);
lcViewSphere::CreateResources();
lcViewSphere::CreateResources(widget->mContext);
if (!gSupportsShaderObjects && lcGetPreferences().mShadingMode == LC_SHADING_DEFAULT_LIGHTS)
lcGetPreferences().mShadingMode = LC_SHADING_FLAT;
@ -140,7 +140,7 @@ lcQGLWidget::~lcQGLWidget()
lcGetPiecesLibrary()->ReleaseBuffers(widget->mContext);
View::DestroyResources(widget->mContext);
lcContext::DestroyResources();
lcViewSphere::DestroyResources();
lcViewSphere::DestroyResources(widget->mContext);
delete gPlaceholderMesh;
gPlaceholderMesh = nullptr;