Text::Text()
{
score = 0;
lr_increment = 5;
level = 20;
initializeFont();
initializeLeftPanel();
initializeRightPanel();
lines_remain = lr_increment * level + level;
lr_text.setString(formatString(lines_remain));
}
void Ibex::TextRenderer::precompileText(float x, float y, const std::vector<std::string> &lines, const std::vector<bool> &highlighted, int maxChars)
{
if(!initialized) {
initialized = true;
loadProgram();
initializeFont();
}
checkForErrors();
vertices.clear();
indices.clear();
minX = minY = INT_MAX;
maxX = maxY = INT_MIN;
// assume orthographic projection with units = screen pixels, origin at top left
int index = 0;
int lineNum = (int)lines.size()-1;
//for(std::string line : lines) {
for(int i = 0; i < lines.size(); ++i) {
std::string line = lines[i];
if(maxChars > 0 && line.length() > maxChars) {
line.resize(maxChars);
}
const GLfloat *color = (highlighted.size() > i && highlighted[i]) ? highlightedTextColor : textColor;
x = 0;
y = -lineNum * (ascent-descent+lineGap)*scale;
unsigned char *text = (unsigned char *)line.data();
while (*text) {
if (*text >= 32 && *text < 128) {
stbtt_aligned_quad q;
stbtt_GetBakedQuad(cdata, 1024,256, *text-32, &x,&y,&q,1);
// bottom right triangle
vertices.push_back(q.x0);
vertices.push_back((baseline-q.y0));
vertices.push_back(0);
vertices.push_back(q.s0);
vertices.push_back(q.t0);
vertices.push_back(color[0]);
vertices.push_back(color[1]);
vertices.push_back(color[2]);
vertices.push_back(color[3]);
vertices.push_back(q.x1);
vertices.push_back((baseline-q.y0));
vertices.push_back(0);
vertices.push_back(q.s1);
vertices.push_back(q.t0);
vertices.push_back(color[0]);
vertices.push_back(color[1]);
vertices.push_back(color[2]);
vertices.push_back(color[3]);
vertices.push_back(q.x1);
vertices.push_back((baseline-q.y1));
vertices.push_back(0);
vertices.push_back(q.s1);
vertices.push_back(q.t1);
vertices.push_back(color[0]);
vertices.push_back(color[1]);
vertices.push_back(color[2]);
vertices.push_back(color[3]);
// top left triangle
vertices.push_back(q.x0);
vertices.push_back((baseline-q.y0));
vertices.push_back(0);
vertices.push_back(q.s0);
vertices.push_back(q.t0);
vertices.push_back(color[0]);
vertices.push_back(color[1]);
vertices.push_back(color[2]);
vertices.push_back(color[3]);
vertices.push_back(q.x1);
vertices.push_back((baseline-q.y1));
vertices.push_back(0);
vertices.push_back(q.s1);
vertices.push_back(q.t1);
vertices.push_back(color[0]);
vertices.push_back(color[1]);
vertices.push_back(color[2]);
vertices.push_back(color[3]);
vertices.push_back(q.x0);
vertices.push_back((baseline-q.y1));
vertices.push_back(0);
vertices.push_back(q.s0);
vertices.push_back(q.t1);
vertices.push_back(color[0]);
vertices.push_back(color[1]);
vertices.push_back(color[2]);
vertices.push_back(color[3]);
minX = std::min(minX,std::min(q.x0,q.x1));
maxX = std::max(maxX,std::max(q.x0,q.x1));
minY = std::min(minY,std::min(baseline-q.y0,baseline-q.y1)+y);
maxY = std::max(maxY,std::max(baseline-q.y0,baseline-q.y1));
for(int i = 0; i < 6; ++i) {
indices.push_back(index++);
}
}
++text;
}
--lineNum;
if(minX > maxX) std::swap(minX,maxX);
if(minY > maxY) std::swap(minY,maxY);
}
if(vaoTextRenderer == 0) glGenVertexArrays(1,&vaoTextRenderer);
if(!checkForErrors()) {
exit(1);
}
glBindVertexArray(vaoTextRenderer);
if(vboTextVertices == 0) glGenBuffers(1, &vboTextVertices);
glBindBuffer(GL_ARRAY_BUFFER, vboTextVertices);
glBufferData(GL_ARRAY_BUFFER, vertices.size()*sizeof(GLfloat), vertices.data(), GL_STATIC_DRAW);
if(!checkForErrors()) {
exit(1);
}
glEnableVertexAttribArray(IbexTextAttribLocations[0]);
glVertexAttribPointer(IbexTextAttribLocations[0], 3, GL_FLOAT, GL_FALSE, sizeof(GLfloat)*9, 0);
glEnableVertexAttribArray(IbexTextAttribLocations[1]);
glVertexAttribPointer(IbexTextAttribLocations[1], 2, GL_FLOAT, GL_FALSE, sizeof(GLfloat)*9, (GLvoid*) (sizeof(GLfloat)*3));
glEnableVertexAttribArray(IbexTextAttribLocations[2]);
glVertexAttribPointer(IbexTextAttribLocations[2], 4, GL_FLOAT, GL_FALSE, sizeof(GLfloat)*9, (GLvoid*) (sizeof(GLfloat)*5));
if(!checkForErrors()) {
exit(1);
}
if(vboTextIndices == 0) glGenBuffers(1, &vboTextIndices);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, vboTextIndices);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, indices.size()*sizeof(GLuint), indices.data(), GL_STATIC_DRAW);
if(!checkForErrors()) {
exit(1);
}
glBindVertexArray(0);
//////////////////////////////////////////////////////////////////////////////
static GLfloat IbexDisplayFlatVertices[] = {
-1.0, -1.0, 0.0, 0, 1,
1.0, -1.0, 0.0, 1, 1,
1.0, 1.0, 0.0, 1, 0,
-1.0, 1.0, 0.0, 0, 0
};
static GLushort IbexDisplayFlatIndices[] = {
0, 2, 1,
0, 3, 2
};
if(vaoTextTextureRenderer == 0) {
if(vaoTextTextureRenderer == 0) glGenVertexArrays(1,&vaoTextTextureRenderer);
if(!checkForErrors()) {
exit(1);
}
glBindVertexArray(vaoTextTextureRenderer);
if(vboTextTextureVertices == 0) glGenBuffers(1, &vboTextTextureVertices);
glBindBuffer(GL_ARRAY_BUFFER, vboTextTextureVertices);
glBufferData(GL_ARRAY_BUFFER, sizeof(IbexDisplayFlatVertices), IbexDisplayFlatVertices, GL_STATIC_DRAW);
if(!checkForErrors()) {
exit(1);
}
glEnableVertexAttribArray(IbexDisplayFlatAttribLocations[0]);
glVertexAttribPointer(IbexDisplayFlatAttribLocations[0], 3, GL_FLOAT, GL_FALSE, sizeof(GLfloat)*5, 0);
glEnableVertexAttribArray(IbexDisplayFlatAttribLocations[2]);
glVertexAttribPointer(IbexDisplayFlatAttribLocations[2], 2, GL_FLOAT, GL_FALSE, sizeof(GLfloat)*5, (GLvoid*) (sizeof(GLfloat) * 3));
if(!checkForErrors()) {
exit(1);
}
if(vboTextTextureIndices == 0) glGenBuffers(1, &vboTextTextureIndices);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, vboTextTextureIndices);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(IbexDisplayFlatIndices), IbexDisplayFlatIndices, GL_STATIC_DRAW);
if(!checkForErrors()) {
exit(1);
}
glBindVertexArray(0);
}
}
