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Uploaded the camera and world-in-motion sources
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Tsvetan Tsvetanov committed Jun 11, 2012
1 parent 662591f commit c94f803
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328 changes: 328 additions & 0 deletions tut-7-camera/Draw.cpp
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#include "Draw.h"

const float g_fColumnBaseHeight = 0.25f;

const float g_fParthenonWidth = 14.0f;
const float g_fParthenonLength = 20.0f;
const float g_fParthenonColumnHeight = 5.0f;
const float g_fParthenonBaseHeight = 1.0f;
const float g_fParthenonTopHeight = 2.0f;

struct TreeData
{
float fXPos;
float fZPos;
float fTrunkHeight;
float fConeHeight;
};

static const TreeData g_forest[] =
{
{-45.0f, -40.0f, 2.0f, 3.0f},
{-42.0f, -35.0f, 2.0f, 3.0f},
{-39.0f, -29.0f, 2.0f, 4.0f},
{-44.0f, -26.0f, 3.0f, 3.0f},
{-40.0f, -22.0f, 2.0f, 4.0f},
{-36.0f, -15.0f, 3.0f, 3.0f},
{-41.0f, -11.0f, 2.0f, 3.0f},
{-37.0f, -6.0f, 3.0f, 3.0f},
{-45.0f, 0.0f, 2.0f, 3.0f},
{-39.0f, 4.0f, 3.0f, 4.0f},
{-36.0f, 8.0f, 2.0f, 3.0f},
{-44.0f, 13.0f, 3.0f, 3.0f},
{-42.0f, 17.0f, 2.0f, 3.0f},
{-38.0f, 23.0f, 3.0f, 4.0f},
{-41.0f, 27.0f, 2.0f, 3.0f},
{-39.0f, 32.0f, 3.0f, 3.0f},
{-44.0f, 37.0f, 3.0f, 4.0f},
{-36.0f, 42.0f, 2.0f, 3.0f},

{-32.0f, -45.0f, 2.0f, 3.0f},
{-30.0f, -42.0f, 2.0f, 4.0f},
{-34.0f, -38.0f, 3.0f, 5.0f},
{-33.0f, -35.0f, 3.0f, 4.0f},
{-29.0f, -28.0f, 2.0f, 3.0f},
{-26.0f, -25.0f, 3.0f, 5.0f},
{-35.0f, -21.0f, 3.0f, 4.0f},
{-31.0f, -17.0f, 3.0f, 3.0f},
{-28.0f, -12.0f, 2.0f, 4.0f},
{-29.0f, -7.0f, 3.0f, 3.0f},
{-26.0f, -1.0f, 2.0f, 4.0f},
{-32.0f, 6.0f, 2.0f, 3.0f},
{-30.0f, 10.0f, 3.0f, 5.0f},
{-33.0f, 14.0f, 2.0f, 4.0f},
{-35.0f, 19.0f, 3.0f, 4.0f},
{-28.0f, 22.0f, 2.0f, 3.0f},
{-33.0f, 26.0f, 3.0f, 3.0f},
{-29.0f, 31.0f, 3.0f, 4.0f},
{-32.0f, 38.0f, 2.0f, 3.0f},
{-27.0f, 41.0f, 3.0f, 4.0f},
{-31.0f, 45.0f, 2.0f, 4.0f},
{-28.0f, 48.0f, 3.0f, 5.0f},

{-25.0f, -48.0f, 2.0f, 3.0f},
{-20.0f, -42.0f, 3.0f, 4.0f},
{-22.0f, -39.0f, 2.0f, 3.0f},
{-19.0f, -34.0f, 2.0f, 3.0f},
{-23.0f, -30.0f, 3.0f, 4.0f},
{-24.0f, -24.0f, 2.0f, 3.0f},
{-16.0f, -21.0f, 2.0f, 3.0f},
{-17.0f, -17.0f, 3.0f, 3.0f},
{-25.0f, -13.0f, 2.0f, 4.0f},
{-23.0f, -8.0f, 2.0f, 3.0f},
{-17.0f, -2.0f, 3.0f, 3.0f},
{-16.0f, 1.0f, 2.0f, 3.0f},
{-19.0f, 4.0f, 3.0f, 3.0f},
{-22.0f, 8.0f, 2.0f, 4.0f},
{-21.0f, 14.0f, 2.0f, 3.0f},
{-16.0f, 19.0f, 2.0f, 3.0f},
{-23.0f, 24.0f, 3.0f, 3.0f},
{-18.0f, 28.0f, 2.0f, 4.0f},
{-24.0f, 31.0f, 2.0f, 3.0f},
{-20.0f, 36.0f, 2.0f, 3.0f},
{-22.0f, 41.0f, 3.0f, 3.0f},
{-21.0f, 45.0f, 2.0f, 3.0f},

{-12.0f, -40.0f, 2.0f, 4.0f},
{-11.0f, -35.0f, 3.0f, 3.0f},
{-10.0f, -29.0f, 1.0f, 3.0f},
{-9.0f, -26.0f, 2.0f, 2.0f},
{-6.0f, -22.0f, 2.0f, 3.0f},
{-15.0f, -15.0f, 1.0f, 3.0f},
{-8.0f, -11.0f, 2.0f, 3.0f},
{-14.0f, -6.0f, 2.0f, 4.0f},
{-12.0f, 0.0f, 2.0f, 3.0f},
{-7.0f, 4.0f, 2.0f, 2.0f},
{-13.0f, 8.0f, 2.0f, 2.0f},
{-9.0f, 13.0f, 1.0f, 3.0f},
{-13.0f, 17.0f, 3.0f, 4.0f},
{-6.0f, 23.0f, 2.0f, 3.0f},
{-12.0f, 27.0f, 1.0f, 2.0f},
{-8.0f, 32.0f, 2.0f, 3.0f},
{-10.0f, 37.0f, 3.0f, 3.0f},
{-11.0f, 42.0f, 2.0f, 2.0f},


{15.0f, 5.0f, 2.0f, 3.0f},
{15.0f, 10.0f, 2.0f, 3.0f},
{15.0f, 15.0f, 2.0f, 3.0f},
{15.0f, 20.0f, 2.0f, 3.0f},
{15.0f, 25.0f, 2.0f, 3.0f},
{15.0f, 30.0f, 2.0f, 3.0f},
{15.0f, 35.0f, 2.0f, 3.0f},
{15.0f, 40.0f, 2.0f, 3.0f},
{15.0f, 45.0f, 2.0f, 3.0f},

{25.0f, 5.0f, 2.0f, 3.0f},
{25.0f, 10.0f, 2.0f, 3.0f},
{25.0f, 15.0f, 2.0f, 3.0f},
{25.0f, 20.0f, 2.0f, 3.0f},
{25.0f, 25.0f, 2.0f, 3.0f},
{25.0f, 30.0f, 2.0f, 3.0f},
{25.0f, 35.0f, 2.0f, 3.0f},
{25.0f, 40.0f, 2.0f, 3.0f},
{25.0f, 45.0f, 2.0f, 3.0f},
};



void DrawTree(ProgramData data, glutil::MatrixStack &modelMatrix, float fTrunkHeight, float fConeHeight)
{
//Draw trunk.
{
glutil::PushStack push(modelMatrix);

modelMatrix.Scale(glm::vec3(1.0f, fTrunkHeight, 1.0f));
modelMatrix.Translate(glm::vec3(0.0f, 0.5f, 0.0f));

glUseProgram(data.theProgram);
glUniformMatrix4fv(data.modelToCameraMatrixUnif, 1, GL_FALSE, glm::value_ptr(modelMatrix.Top()));
glUniform4f(data.baseColorUnif, 0.694f, 0.4f, 0.106f, 1.0f);
g_pCylinderMesh->Render();
glUseProgram(0);
}

//Draw the treetop
{
glutil::PushStack push(modelMatrix);

modelMatrix.Translate(glm::vec3(0.0f, fTrunkHeight, 0.0f));
modelMatrix.Scale(glm::vec3(3.0f, fConeHeight, 3.0f));

glUseProgram(data.theProgram);
glUniformMatrix4fv(data.modelToCameraMatrixUnif, 1, GL_FALSE, glm::value_ptr(modelMatrix.Top()));
glUniform4f(data.baseColorUnif, 0.0f, 1.0f, 0.0f, 1.0f);
g_pConeMesh->Render();
glUseProgram(0);
}
}


void DrawForest(ProgramData data, glutil::MatrixStack &modelMatrix, glutil::MatrixStack camMatrix)
{
for(int iTree = 0; iTree < ARRAY_COUNT(g_forest); iTree++)
{
const TreeData &currTree = g_forest[iTree];

glutil::PushStack push(modelMatrix);
modelMatrix.ApplyMatrix(camMatrix.Top());

modelMatrix.Translate(glm::vec3(currTree.fXPos, 0.0f, currTree.fZPos));
DrawTree(data, modelMatrix, currTree.fTrunkHeight, currTree.fConeHeight);
}
}




void DrawColumn(ProgramData data, glutil::MatrixStack &modelMatrix, float fHeight)
{
//Draw the bottom of the column.
{
glutil::PushStack push(modelMatrix);

modelMatrix.Scale(glm::vec3(1.0f, g_fColumnBaseHeight, 1.0f));
modelMatrix.Translate(glm::vec3(0.0f, 0.5f, 0.0f));

glUseProgram(data.theProgram);
glUniformMatrix4fv(data.modelToCameraMatrixUnif, 1, GL_FALSE, glm::value_ptr(modelMatrix.Top()));
glUniform4f(data.baseColorUnif, 1.0f, 1.0f, 1.0f, 1.0f);
g_pCubeTintMesh->Render();
glUseProgram(0);
}

//Draw the top of the column.
{
glutil::PushStack push(modelMatrix);

modelMatrix.Translate(glm::vec3(0.0f, fHeight - g_fColumnBaseHeight, 0.0f));
modelMatrix.Scale(glm::vec3(1.0f, g_fColumnBaseHeight, 1.0f));
modelMatrix.Translate(glm::vec3(0.0f, 0.5f, 0.0f));

glUseProgram(data.theProgram);
glUniformMatrix4fv(data.modelToCameraMatrixUnif, 1, GL_FALSE, glm::value_ptr(modelMatrix.Top()));
glUniform4f(data.baseColorUnif, 0.9f, 0.9f, 0.9f, 0.9f);
g_pCubeTintMesh->Render();
glUseProgram(0);
}

//Draw the main column.
{
glutil::PushStack push(modelMatrix);

modelMatrix.Translate(glm::vec3(0.0f, g_fColumnBaseHeight, 0.0f));
modelMatrix.Scale(glm::vec3(0.8f, fHeight - (g_fColumnBaseHeight * 2.0f), 0.8f));
modelMatrix.Translate(glm::vec3(0.0f, 0.5f, 0.0f));

glUseProgram(data.theProgram);
glUniformMatrix4fv(data.modelToCameraMatrixUnif, 1, GL_FALSE, glm::value_ptr(modelMatrix.Top()));
glUniform4f(data.baseColorUnif, 0.9f, 0.9f, 0.9f, 0.9f);
g_pCylinderMesh->Render();
glUseProgram(0);
}
}

void DrawParthenon(ProgramData dataColorTint, ProgramData dataObject, glutil::MatrixStack &modelMatrix)
{
//Draw base.
{
glutil::PushStack push(modelMatrix);

modelMatrix.Scale(glm::vec3(g_fParthenonWidth, g_fParthenonBaseHeight, g_fParthenonLength));
modelMatrix.Translate(glm::vec3(0.0f, 0.5f, 0.0f));

glUseProgram(dataColorTint.theProgram);
glUniformMatrix4fv(dataColorTint.modelToCameraMatrixUnif, 1, GL_FALSE, glm::value_ptr(modelMatrix.Top()));
glUniform4f(dataColorTint.baseColorUnif, 0.9f, 0.9f, 0.9f, 0.9f);
g_pCubeTintMesh->Render();
glUseProgram(0);
}

//Draw top.
{
glutil::PushStack push(modelMatrix);

modelMatrix.Translate(glm::vec3(0.0f, g_fParthenonColumnHeight + g_fParthenonBaseHeight, 0.0f));
modelMatrix.Scale(glm::vec3(g_fParthenonWidth, g_fParthenonTopHeight, g_fParthenonLength));
modelMatrix.Translate(glm::vec3(0.0f, 0.5f, 0.0f));

glUseProgram(dataColorTint.theProgram);
glUniformMatrix4fv(dataColorTint.modelToCameraMatrixUnif, 1, GL_FALSE, glm::value_ptr(modelMatrix.Top()));
glUniform4f(dataColorTint.baseColorUnif, 0.9f, 0.9f, 0.9f, 0.9f);
g_pCubeTintMesh->Render();
glUseProgram(0);
}

//Draw columns.
const float fFrontZVal = (g_fParthenonLength / 2.0f) - 1.0f;
const float fRightXVal = (g_fParthenonWidth / 2.0f) - 1.0f;

for(int iColumnNum = 0; iColumnNum < int(g_fParthenonWidth / 2.0f); iColumnNum++)
{
{
glutil::PushStack push(modelMatrix);
modelMatrix.Translate(glm::vec3((2.0f * iColumnNum) - (g_fParthenonWidth / 2.0f) + 1.0f,
g_fParthenonBaseHeight, fFrontZVal));

DrawColumn(dataColorTint, modelMatrix, g_fParthenonColumnHeight);
}
{
glutil::PushStack push(modelMatrix);
modelMatrix.Translate(glm::vec3((2.0f * iColumnNum) - (g_fParthenonWidth / 2.0f) + 1.0f,
g_fParthenonBaseHeight, -fFrontZVal));

DrawColumn(dataColorTint, modelMatrix, g_fParthenonColumnHeight);
}
}

//Don't draw the first or last columns, since they've been drawn already.
for(int iColumnNum = 1; iColumnNum < int((g_fParthenonLength - 2.0f) / 2.0f); iColumnNum++)
{
{
glutil::PushStack push(modelMatrix);
modelMatrix.Translate(glm::vec3(fRightXVal,
g_fParthenonBaseHeight, (2.0f * iColumnNum) - (g_fParthenonLength / 2.0f) + 1.0f));

DrawColumn(dataColorTint, modelMatrix, g_fParthenonColumnHeight);
}
{
glutil::PushStack push(modelMatrix);
modelMatrix.Translate(glm::vec3(-fRightXVal,
g_fParthenonBaseHeight, (2.0f * iColumnNum) - (g_fParthenonLength / 2.0f) + 1.0f));

DrawColumn(dataColorTint, modelMatrix, g_fParthenonColumnHeight);
}
}

//Draw interior.
{
glutil::PushStack push(modelMatrix);

modelMatrix.Translate(glm::vec3(0.0f, 1.0f, 0.0f));
modelMatrix.Scale(glm::vec3(g_fParthenonWidth - 6.0f, g_fParthenonColumnHeight,
g_fParthenonLength - 6.0f));
modelMatrix.Translate(glm::vec3(0.0f, 0.5f, 0.0f));

glUseProgram(dataObject.theProgram);
glUniformMatrix4fv(dataObject.modelToCameraMatrixUnif, 1, GL_FALSE, glm::value_ptr(modelMatrix.Top()));
g_pCubeColorMesh->Render();
glUseProgram(0);
}

//Draw headpiece.
{
glutil::PushStack push(modelMatrix);

modelMatrix.Translate(glm::vec3(
0.0f,
g_fParthenonColumnHeight + g_fParthenonBaseHeight + (g_fParthenonTopHeight / 2.0f),
g_fParthenonLength / 2.0f));
modelMatrix.RotateX(-135.0f);
modelMatrix.RotateY(45.0f);

glUseProgram(dataObject.theProgram);
glUniformMatrix4fv(dataObject.modelToCameraMatrixUnif, 1, GL_FALSE, glm::value_ptr(modelMatrix.Top()));
g_pCubeColorMesh->Render();
glUseProgram(0);
}
}
35 changes: 35 additions & 0 deletions tut-7-camera/Draw.h
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#ifndef DRAW_H
#define DRAW_H

#include <glload/gl_3_3.h>
#include <glutil/glutil.h>
#include <GL/freeglut.h>
#include "../framework/framework.h"
#include "../framework/Mesh.h"

extern Framework::Mesh *g_pConeMesh;
extern Framework::Mesh *g_pCylinderMesh;
extern Framework::Mesh *g_pCubeTintMesh;
extern Framework::Mesh *g_pCubeColorMesh;
extern Framework::Mesh *g_pPlaneMesh;


struct ProgramData
{
GLuint theProgram;
GLuint globalUniformBlockIndex;
GLuint modelToCameraMatrixUnif;
GLuint baseColorUnif;
GLuint thing;
};


extern void DrawTree(ProgramData data, glutil::MatrixStack &modelMatrix, float fTrunkHeight = 2.0f, float fConeHeight = 3.0f);
extern void DrawForest(ProgramData data, glutil::MatrixStack &modelMatrix, glutil::MatrixStack camMatrix);


extern void DrawColumn(ProgramData dataColorTint, glutil::MatrixStack &modelMatrix, float fHeight = 5.0f);
extern void DrawParthenon(ProgramData data, ProgramData dataObject, glutil::MatrixStack &modelMatrix);


#endif
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