void GLInstancingRenderer::drawLines(const float* positions, const float color[4], int numPoints, int pointStrideInBytes, const unsigned int* indices, int numIndices, float lineWidthIn)
{
float lineWidth = lineWidthIn;
b3Clamp(lineWidth,(float)lineWidthRange[0],(float)lineWidthRange[1]);
glLineWidth(lineWidth);
glBindBuffer(GL_ARRAY_BUFFER, m_data->m_vbo);
b3Assert(glGetError() ==GL_NO_ERROR);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D,0);
b3Assert(glGetError() ==GL_NO_ERROR);
glUseProgram(linesShader);
glUniformMatrix4fv(lines_ProjectionMatrix, 1, false, &m_data->m_projectionMatrix[0]);
glUniformMatrix4fv(lines_ModelViewMatrix, 1, false, &m_data->m_viewMatrix[0]);
glUniform4f(lines_colour,color[0],color[1],color[2],color[3]);
// glPointSize(pointDrawSize);
glBindVertexArray(linesVertexArrayObject);
b3Assert(glGetError() ==GL_NO_ERROR);
glBindBuffer(GL_ARRAY_BUFFER, linesVertexBufferObject);
{
glBufferData(GL_ARRAY_BUFFER, numPoints*pointStrideInBytes, 0,GL_DYNAMIC_DRAW);
glBufferSubData(GL_ARRAY_BUFFER, 0, numPoints*pointStrideInBytes, positions);
b3Assert(glGetError() ==GL_NO_ERROR);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindBuffer(GL_ARRAY_BUFFER, linesVertexBufferObject);
glEnableVertexAttribArray(0);
b3Assert(glGetError() ==GL_NO_ERROR);
int numFloats = 3;
glVertexAttribPointer(0, numFloats, GL_FLOAT, GL_FALSE, pointStrideInBytes, 0);
b3Assert(glGetError() ==GL_NO_ERROR);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, linesIndexVbo);
int indexBufferSizeInBytes = numIndices*sizeof(int);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, indexBufferSizeInBytes, NULL, GL_DYNAMIC_DRAW);
glBufferSubData(GL_ELEMENT_ARRAY_BUFFER, 0, indexBufferSizeInBytes, indices);
glDrawElements(GL_LINES, numIndices, GL_UNSIGNED_INT, 0);
}
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
glBindBuffer(GL_ARRAY_BUFFER, 0);
// for (int i=0;i<numIndices;i++)
// printf("indicec[i]=%d]\n",indices[i]);
b3Assert(glGetError() ==GL_NO_ERROR);
glBindVertexArray(0);
b3Assert(glGetError() ==GL_NO_ERROR);
glPointSize(1);
b3Assert(glGetError() ==GL_NO_ERROR);
glUseProgram(0);
}
double convertSensor(int inputV, int minV, int maxV)
{
b3Clamp(inputV, minV, maxV);
double outVal = (double)inputV;
double b = (outVal - (double)minV) / float(maxV - minV);
return (b);
}
void GLInstancingRenderer::drawLine(const float from[4], const float to[4], const float color[4], float lineWidth)
{
b3Assert(glGetError() ==GL_NO_ERROR);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D,0);
b3Assert(glGetError() ==GL_NO_ERROR);
glUseProgram(linesShader);
b3Assert(glGetError() ==GL_NO_ERROR);
glUniformMatrix4fv(lines_ProjectionMatrix, 1, false, &m_data->m_projectionMatrix[0]);
glUniformMatrix4fv(lines_ModelViewMatrix, 1, false, &m_data->m_viewMatrix[0]);
glUniform4f(lines_colour,color[0],color[1],color[2],color[3]);
b3Assert(glGetError() ==GL_NO_ERROR);
const float vertexPositions[] = {
from[0],from[1],from[2],1,
to[0],to[1],to[2],1
};
int sz = sizeof(vertexPositions);
b3Assert(glGetError() ==GL_NO_ERROR);
b3Clamp(lineWidth,(float)lineWidthRange[0],(float)lineWidthRange[1]);
glLineWidth(lineWidth);
b3Assert(glGetError() ==GL_NO_ERROR);
glBindVertexArray(lineVertexArrayObject);
b3Assert(glGetError() ==GL_NO_ERROR);
glBindBuffer(GL_ARRAY_BUFFER, lineVertexBufferObject);
b3Assert(glGetError() ==GL_NO_ERROR);
{
glBufferSubData(GL_ARRAY_BUFFER, 0,sz, vertexPositions);
}
b3Assert(glGetError() ==GL_NO_ERROR);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindBuffer(GL_ARRAY_BUFFER, lineVertexBufferObject);
b3Assert(glGetError() ==GL_NO_ERROR);
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 4, GL_FLOAT, GL_FALSE, 0, 0);
b3Assert(glGetError() ==GL_NO_ERROR);
glDrawArrays(GL_LINES, 0, 2);
b3Assert(glGetError() ==GL_NO_ERROR);
glBindVertexArray(0);
glLineWidth(1);
b3Assert(glGetError() ==GL_NO_ERROR);
glUseProgram(0);
}
