@Override
public Surface drawLine(float x0, float y0, float x1, float y1, float width) {
bindFramebuffer();
// swap the line end points if x1 is less than x0
if (x1 < x0) {
float temp = x0;
x0 = x1;
x1 = temp;
temp = y0;
y0 = y1;
y1 = temp;
}
float dx = x1 - x0, dy = y1 - y0;
float length = FloatMath.sqrt(dx * dx + dy * dy);
float wx = dx * (width / 2) / length;
float wy = dy * (width / 2) / length;
InternalTransform l = ctx.createTransform();
l.setRotation(FloatMath.atan2(dy, dx));
l.setTranslation(x0 + wy, y0 - wx);
l.preConcatenate(topTransform());
GLShader shader = ctx.quadShader(this.shader);
if (fillPattern != null) {
int tex = fillPattern.ensureTexture();
if (tex > 0) {
shader.prepareTexture(tex, tint);
shader.addQuad(
l,
0,
0,
length,
width,
0,
0,
length / fillPattern.width(),
width / fillPattern.height());
}
} else {
int tex = ctx.fillImage().ensureTexture();
shader.prepareTexture(tex, Tint.combine(fillColor, tint));
shader.addQuad(l, 0, 0, length, width, 0, 0, 1, 1);
}
return this;
}
@Override
public Surface fillTriangles(float[] xys, int[] indices) {
bindFramebuffer();
GLShader shader = ctx.trisShader(this.shader);
if (fillPattern != null) {
int tex = fillPattern.ensureTexture();
if (tex > 0) {
shader.prepareTexture(tex, tint);
shader.addTriangles(
topTransform(), xys, fillPattern.width(), fillPattern.height(), indices);
}
} else {
int tex = ctx.fillImage().ensureTexture();
shader.prepareTexture(tex, Tint.combine(fillColor, tint));
shader.addTriangles(topTransform(), xys, 1, 1, indices);
}
return this;
}
@Override
public Surface fillRect(float x, float y, float width, float height) {
bindFramebuffer();
GLShader shader = ctx.quadShader(this.shader);
if (fillPattern != null) {
int tex = fillPattern.ensureTexture();
if (tex > 0) {
shader.prepareTexture(tex, tint);
float tw = fillPattern.width(), th = fillPattern.height(), r = x + width, b = y + height;
shader.addQuad(topTransform(), x, y, x + width, y + height, x / tw, y / th, r / tw, b / th);
}
} else {
int tex = ctx.fillImage().ensureTexture();
shader.prepareTexture(tex, Tint.combine(fillColor, tint));
shader.addQuad(topTransform(), x, y, x + width, y + height, 0, 0, 1, 1);
}
return this;
}
@Override
public Surface fillTriangles(float[] xys, float[] sxys, int[] indices) {
bindFramebuffer();
if (fillPattern == null) throw new IllegalStateException("No fill pattern currently set");
int tex = fillPattern.ensureTexture();
if (tex > 0) {
GLShader shader = ctx.trisShader(this.shader).prepareTexture(tex, tint);
shader.addTriangles(topTransform(), xys, sxys, indices);
}
return this;
}
