diff options
Diffstat (limited to 'voronoisplat.cpp')
| -rw-r--r-- | voronoisplat.cpp | 28 |
1 files changed, 13 insertions, 15 deletions
diff --git a/voronoisplat.cpp b/voronoisplat.cpp index 9154c5e..0a2894b 100644 --- a/voronoisplat.cpp +++ b/voronoisplat.cpp @@ -27,7 +27,6 @@ static int nextPow2(int n) VoronoiSplat::VoronoiSplat(QQuickItem *parent) : QQuickFramebufferObject(parent) - , m_cmap(3*Colormap::SAMPLES) , m_alpha(DEFAULT_ALPHA) , m_beta(DEFAULT_BETA) { @@ -36,11 +35,16 @@ VoronoiSplat::VoronoiSplat(QQuickItem *parent) void VoronoiSplat::setSites(const arma::mat &points) { - if (points.n_rows < 1 || points.n_cols != 2 - || (m_values.size() != 0 && points.n_rows != m_values.size())) { + if (points.n_rows < 1 || points.n_cols != 2) { return; } + if (m_values.size() > 0 && m_values.size() != points.n_rows) { + // Old values are no longer valid, clean up + m_values.resize(points.n_rows); + m_values.assign(points.n_rows, 0); + } + // Copy 'points' to internal data structure(s) double minX = points.col(0).min(); double maxX = points.col(0).max(); @@ -83,7 +87,8 @@ void VoronoiSplat::setValues(const arma::vec &values) void VoronoiSplat::setColorScale(const ColorScale &scale) { - scale.sample(Colormap::SAMPLES, m_cmap.begin()); + m_cmap.resize(scale.numColors() * 3); + scale.sample(scale.numColors(), m_cmap.begin()); emit colorScaleChanged(scale); setColorScaleChanged(true); @@ -231,7 +236,7 @@ uniform float rad_max; layout (location = 0) out vec4 fragColor; vec3 getRGB(float value) { - return texture(colorScale, vec2(value, 0)).rgb; + return texture(colorScale, vec2(mix(0.005, 0.995, value), 0)).rgb; } void main() { @@ -287,8 +292,6 @@ void VoronoiSplatRenderer::setupTextures() // (2D texture for compatibility; used to be a 1D texture) gl.glGenTextures(1, &m_colormapTex); gl.glBindTexture(GL_TEXTURE_2D, m_colormapTex); - gl.glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, Colormap::SAMPLES, 1, 0, GL_RGB, - GL_FLOAT, 0); gl.glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); gl.glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); } @@ -421,7 +424,7 @@ void VoronoiSplatRenderer::synchronize(QQuickFramebufferObject *item) m_valuesChanged = splat->valuesChanged(); m_colorScaleChanged = splat->colorScaleChanged(); - // Reset these so that by the next synchronize() we have the correct values + // Reset so that we have the correct values by the next synchronize() splat->setSitesChanged(false); splat->setValuesChanged(false); splat->setColorScaleChanged(false); @@ -457,11 +460,8 @@ void VoronoiSplatRenderer::updateValues() void VoronoiSplatRenderer::updateColorScale() { - gl.glActiveTexture(GL_TEXTURE0); gl.glBindTexture(GL_TEXTURE_2D, m_colormapTex); - //gl.glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, Colormap::SAMPLES, 1, GL_RGB, - // GL_FLOAT, m_cmap->data()); - gl.glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, Colormap::SAMPLES, 1, 0, GL_RGB, + gl.glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, m_cmap->size() / 3, 1, 0, GL_RGB, GL_FLOAT, m_cmap->data()); m_colorScaleChanged = false; @@ -485,8 +485,6 @@ void VoronoiSplatRenderer::computeDT() // Upload result to lookup texture gl.glActiveTexture(GL_TEXTURE0); gl.glBindTexture(GL_TEXTURE_2D, m_textures[0]); - //gl.glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, w, h, GL_RED, GL_FLOAT, - // buf.data()); - gl.glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA32F, w, h, 0, GL_RED, GL_FLOAT, + gl.glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, w, h, GL_RED, GL_FLOAT, buf.data()); } |